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Journal articles on the topic 'Dirac semimetallic'

Author: Grafiati

Published: 6 September 2023

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1

Deily Nazar, N., T. Vazifehshenas, M. R. Ebrahimi, and F. M. Peeters. "Strong anisotropic optical properties of 8-Pmmn borophene: a many-body perturbation study." Physical Chemistry Chemical Physics 23, no. 30 (2021): 16417–22. http://dx.doi.org/10.1039/d1cp01910d.

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2

Zhang, Jin, Artem R. Oganov, Xinfeng Li, Huafeng Dong, and Qingfeng Zeng. "Novel compounds in the Zr–O system, their crystal structures and mechanical properties." Physical Chemistry Chemical Physics 17, no. 26 (2015): 17301–10. http://dx.doi.org/10.1039/c5cp02252e.

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3

Kong, Weixiang, Xiaoliang Xiao, Wangping Xu, et al. "The Dirac cone in two-dimensional tetragonal silicon carbides: a ring coupling mechanism." Nanoscale 13, no. 43 (2021): 18267–72. http://dx.doi.org/10.1039/d1nr04586e.

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4

Wu, Haiping, Yan Qian, Zhengwei Du, Renzhu Zhu, Erjun Kan, and Kaiming Deng. "Prediction of another semimetallic silicene allotrope with Dirac fermions." Physics Letters A 381, no. 44 (2017): 3754–59. http://dx.doi.org/10.1016/j.physleta.2017.09.049.

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5

Wang, Shuaiwei, Donghai Wu, Baocheng Yang, Eli Ruckenstein, and Houyang Chen. "Semimetallic carbon honeycombs: new three-dimensional graphene allotropes with Dirac cones." Nanoscale 10, no. 6 (2018): 2748–54. http://dx.doi.org/10.1039/c7nr07824b.

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6

Penazzi, Gabriele, Peter Deák, Bálint Aradi, et al. "TiO2 Nanowires as a Wide Bandgap Dirac Material: a numerical study of impurity scattering and Anderson disorder." MRS Proceedings 1659 (2014): 187–91. http://dx.doi.org/10.1557/opl.2014.150.

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ABSTRACTDirac materials are characterized by exceptional mobility, orders of magnitude higher than any semiconductor, due to the massless pseudorelativistic nature of the Dirac fermions. These systems being semimetallic, the lack of a genuine band-gap poses a serious limitation to their possible applications in electronics. We recently demonstrated that thin TiO2 nanowires can exhibit 1D Dirac states similar to metallic carbon nanotubes, with the crucial difference that these states lie inside the conduction band in proximity of a wide band gap. We analyze the robustness of the Dirac states re

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7

Zhang, Wei, Changchun Chai, Qingyang Fan, et al. "Semimetallic 2D Alkynyl Carbon Materials with Distorted Type I Dirac Cones." Journal of Physical Chemistry C 125, no. 32 (2021): 18022–30. http://dx.doi.org/10.1021/acs.jpcc.1c04993.

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8

Bafekry, A., M. Faraji, N. N. Hieu, et al. "Two-dimensional Dirac half-metal in porous carbon nitride C₆N₇ monolayer via atomic doping." Nanotechnology 33, no. 7 (2021): 075707. http://dx.doi.org/10.1088/1361-6528/ac31e7.

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Abstract Motivated by the recent experimental discovery of C6N7 monolayer (Zhao et al 2021 Science Bulletin 66, 1764), we show that C6N7 monolayer co-doped with C atom is a Dirac half-metal by employing first-principle density functional theory calculations. The structural, mechanical, electronic and magnetic properties of the co-doped C6N7 are investigated by both the PBE and HSE06 functionals. Pristine C6N7 monolayer is a semiconductor with almost isotropic electronic dispersion around the Γ point. As the doping of the C6N7 takes place, the substitution of an N atom with a C atom transforms

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9

Baidak, Semyon T., and Alexey V. Lukoyanov. "Semimetallic, Half-Metallic, Semiconducting, and Metallic States in Gd-Sb Compounds." International Journal of Molecular Sciences 24, no. 10 (2023): 8778. http://dx.doi.org/10.3390/ijms24108778.

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The electronic and band structures of the Gd- and Sb-based intermetallic materials have been explored using the theoretical ab initio approach, accounting for strong electron correlations of the Gd-4f electrons. Some of these compounds are being actively investigated because of topological features in these quantum materials. Five compounds were investigated theoretically in this work to demonstrate the variety of electronic properties in the Gd-Sb-based family: GdSb, GdNiSb, Gd4Sb3, GdSbS2O, and GdSb2. The GdSb compound is a semimetal with the topological nonsymmetric electron pocket along th

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10

Lin, Yuxuan, Qiong Ma, Pin-Chun Shen, et al. "Asymmetric hot-carrier thermalization and broadband photoresponse in graphene-2D semiconductor lateral heterojunctions." Science Advances 5, no. 6 (2019): eaav1493. http://dx.doi.org/10.1126/sciadv.aav1493.

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The massless Dirac electron transport in graphene has led to a variety of unique light-matter interaction phenomena, which promise many novel optoelectronic applications. Most of the effects are only accessible by breaking the spatial symmetry, through introducing edges, p-n junctions, or heterogeneous interfaces. The recent development of direct synthesis of lateral heterostructures offers new opportunities to achieve the desired asymmetry. As a proof of concept, we study the photothermoelectric effect in an asymmetric lateral heterojunction between the Dirac semimetallic monolayer graphene a

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11

Lu, Wei, Xiaoming Song, Jiwei Ling, et al. "Coherent diffraction rings induced by thermal–mechanical effect of a flexible Dirac semimetallic composite structure." Journal of Applied Physics 129, no. 9 (2021): 093102. http://dx.doi.org/10.1063/5.0035647.

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12

Kang, Joon Sang, Dung Vu, and Joseph P. Heremans. "Identifying the Dirac point composition in Bi_1−xSb_x alloys using the temperature dependence of quantum oscillations." Journal of Applied Physics 130, no. 22 (2021): 225106. http://dx.doi.org/10.1063/5.0068312.

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The thermal chiral anomaly is a new mechanism for thermal transport that occurs in Weyl semimetals (WSMs). It is attributed to the generation and annihilation of energy at Weyl points of opposite chirality. The effect was observed in the Bi1− xSb x alloy system, at x = 11% and 15%, which are topological insulators at zero field and driven into an ideal WSM phase by an external field. Given that the experimental uncertainty on x is of the order of 1%, any systematic study of the effect over a wider range of x requires precise knowledge of the transition composition xc at which the electronic ba

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13

Marbouh, N., M. Driss Khodja, A. Boudali, S. Chibani, and A. Bentayeb. "Structural, mechanical, electronic structure and thermoelectric properties of Dirac semimetallic SrIrO3 compound: A first-principles study." Computational Condensed Matter 21 (December 2019): e00420. http://dx.doi.org/10.1016/j.cocom.2019.e00420.

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14

Chen, Xin, Adrien Bouhon, Linyang Li, François M. Peeters, and Biplab Sanyal. "PAI-graphene: A new topological semimetallic two-dimensional carbon allotrope with highly tunable anisotropic Dirac cones." Carbon 170 (December 2020): 477–86. http://dx.doi.org/10.1016/j.carbon.2020.08.012.

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15

Fu, Lei, Debo Hu, Rafael G. Mendes, et al. "Highly Organized Epitaxy of Dirac Semimetallic PtTe2 Crystals with Extrahigh Conductivity and Visible Surface Plasmons at Edges." ACS Nano 12, no. 9 (2018): 9405–11. http://dx.doi.org/10.1021/acsnano.8b04540.

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16

Tateishi, Ikuma, Xiaoni Zhang, and Iwao Matsuda. "Electronic Structures of Polymorphic Layers of Borophane." Molecules 27, no. 6 (2022): 1808. http://dx.doi.org/10.3390/molecules27061808.

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The search for free-standing 2D materials has been one of the most important subjects in the field of studies on 2D materials and their applications. Recently, a free-standing monolayer of hydrogenated boron (HB) sheet has been synthesized by hydrogenation of borophene. The HB sheet is also called borophane, and its application is actively studied in many aspects. Here, we review recent studies on the electronic structures of polymorphic sheets of borophane. A hydrogenated boron sheet with a hexagonal boron frame was shown to have a semimetallic electronic structure by experimental and theoret

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17

Creange, Nicole, Costel Constantin, Jian-Xin Zhu, Alexander V. Balatsky, and Jason T. Haraldsen. "Computational Investigation of the Electronic and Optical Properties of Planar Ga-Doped Graphene." Advances in Condensed Matter Physics 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/635019.

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We simulate the optical and electrical responses in gallium-doped graphene. Using density functional theory with a local density approximation, we simulate the electronic band structure and show the effects of impurity doping (0–3.91%) in graphene on the electron density, refractive index, optical conductivity, and extinction coefficient for each doping percentage. Here, gallium atoms are placed randomly (using a 5-point average) throughout a 128-atom sheet of graphene. These calculations demonstrate the effects of hole doping due to direct atomic substitution, where it is found that a disrupt

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18

Pang, Qing, Long Li, Lin-li Zhang, Chun-ling Zhang, and Yu-ling Song. "Functionalization of germanene by metal atoms adsorption: A first-principles study." Canadian Journal of Physics 93, no. 11 (2015): 1310–18. http://dx.doi.org/10.1139/cjp-2015-0206.

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First-principles calculations were performed to study the adsorption characteristics of 15 different metal atoms on germanene. For the alkali metal adatoms (Li, Na, and K) on germanene, the bonding is approximately ideal ionic and the semimetallic germanene finally becomes metallic with a small band gap opening at the Dirac point. The bonding of alkaline earth metal atoms (Be, Mg, and Ca) to germanene is a mixture of ionic and covalent. The Be and Mg adsorptions lead to semiconducting behavior in germanene, while similar to Li, Na, and K adsorptions, the Ca adsorbed germanene is metallic. For

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19

Cai, Yusheng, Yi Wei, Cuihong Lv, Lichuan Zhang, and Yuanping Chen. "LC₅₆₇: a new 2D semimetallic carbon allotrope as a promising anode material for lithium-ion batteries." Physical Chemistry Chemical Physics, 2023. http://dx.doi.org/10.1039/d3cp01640d.

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20

Zhou, Xiang-Feng, Xiao Dong, Artem R. Oganov, Qiang Zhu, Yongjun Tian, and Hui-Tian Wang. "Semimetallic Two-Dimensional Boron Allotrope with Massless Dirac Fermions." Physical Review Letters 112, no. 8 (2014). http://dx.doi.org/10.1103/physrevlett.112.085502.

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21

Li, Chang-An. "Topological States in Two-Dimensional Su-Schrieffer-Heeger Models." Frontiers in Physics 10 (March 16, 2022). http://dx.doi.org/10.3389/fphy.2022.861242.

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We study the topological properties of the generalized two-dimensional (2D) Su-Schrieffer-Heeger (SSH) models. We show that a pair of Dirac points appear in the Brillouin zone (BZ), consisting a semimetallic phase. Interestingly, the locations of these Dirac points are not pinned to any high-symmetry points of the BZ but tunable by model parameters. Moreover, the merging of two Dirac points undergoes a novel topological phase transition, which leads to either a weak topological insulator or a nodal-line metallic phase. We demonstrate these properties by constructing two specific models, which

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22

Facio, Jorge I., Elisabetta Nocerino, Ion Cosma Fulga, et al. "Engineering a pure Dirac regime in ZrTe$_5$." SciPost Physics 14, no. 4 (2023). http://dx.doi.org/10.21468/scipostphys.14.4.066.

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Real-world topological semimetals typically exhibit Dirac and Weyl nodes that coexist with trivial Fermi pockets. This tends to mask the physics of the relativistic quasiparticles. Using the example of ZrTe_55, we show that strain provides a powerful tool for in-situ tuning of the band structure such that all trivial pockets are pushed far away from the Fermi energy, but only for a certain range of Van der Waals gaps. Our results naturally reconcile contradicting reports on the presence or absence of additional pockets in ZrTe_55, and provide a clear map of where to find a pure three-dimension

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23

Sánchez-Ochoa, Francisco, Alberto Rubio-Ponce, and Florentino López-Urías. "Pressure-induced reentrant Dirac semimetallic phases in twisted bilayer graphene." Physical Review B 107, no. 4 (2023). http://dx.doi.org/10.1103/physrevb.107.045414.

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24

Wang, Shuaiwei, and Bingjun Shi. "Auxetic ographene: a new 2D Dirac nodal-ring semimetal carbon-base materials with high negative Poisson’s ratio." Physical Chemistry Chemical Physics, 2022. http://dx.doi.org/10.1039/d2cp01469f.

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Auxetic and semimetallic materials possess many advanced applications due to the negative Poisson’s ratio (NPR) effect and unique electronic properties. However, the candidates with the above properties are rather scarce...

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25

Hlevyack, Joseph A., Liang-Ying Feng, Meng-Kai Lin, et al. "Dimensional crossover and band topology evolution in ultrathin semimetallic NiTe2 films." npj 2D Materials and Applications 5, no. 1 (2021). http://dx.doi.org/10.1038/s41699-021-00218-z.

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AbstractNickel ditelluride (NiTe2), a recently discovered Type-II Dirac semimetal with topological Dirac fermions near the Fermi energy, is expected to exhibit strong thickness-mediated electronic tunability and intrinsic two-gap superconductivity in the single-layer limit. Realizing such intriguing phenomena requires the fabrication of ultrathin NiTe2 films and an understanding of the underlying physics that is still under debate. By conducting experimental band mappings of ultrathin films prepared with molecular beam epitaxy, we reveal spectroscopic evidence for the dimensionality crossover

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26

Lu, Wei, Zipu Fan, Yunkun Yang, et al. "Ultrafast photothermoelectric effect in Dirac semimetallic Cd3As2 revealed by terahertz emission." Nature Communications 13, no. 1 (2022). http://dx.doi.org/10.1038/s41467-022-29168-w.

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AbstractThe thermoelectric effects of topological semimetals have attracted tremendous research interest because many topological semimetals are excellent thermoelectric materials and thermoelectricity serves as one of their most important potential applications. In this work, we reveal the transient photothermoelectric response of Dirac semimetallic Cd3As2, namely the photo-Seebeck effect and photo-Nernst effect, by studying the terahertz (THz) emission from the transient photocurrent induced by these effects. Our excitation polarization and power dependence confirm that the observed THz emis

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27

Ghosh, Sudeep K., P. K. Biswas, Chunqiang Xu, et al. "Time-reversal symmetry breaking superconductivity in three-dimensional Dirac semimetallic silicides." Physical Review Research 4, no. 1 (2022). http://dx.doi.org/10.1103/physrevresearch.4.l012031.

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28

Park, H. J., Byung Cheol Park, Min-Cheol Lee, et al. "Electrodynamic properties of the semimetallic Dirac materialSrMnBi2: Two-carrier-model analysis." Physical Review B 96, no. 15 (2017). http://dx.doi.org/10.1103/physrevb.96.155139.

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29

Zheng, Wenkai, Rico Schönemann, Shirin Mozaffari, et al. "Bulk Fermi surfaces of the Dirac type-II semimetallic candidate NiTe2." Physical Review B 102, no. 12 (2020). http://dx.doi.org/10.1103/physrevb.102.125103.

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30

Lv, Qianqian, Pei-Hao Fu, Xiang-Long Yu, Jun-Feng Liu, and Jiansheng Wu. "Electrically controlled spin polarized current in Dirac semimetals." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-01067-y.

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AbstractWe propose a highly tunable $$100\%$$ 100 % spin-polarized current generated in a spintronic device based on a Dirac semimetal (DSM) under a magnetic field, which can be achieved merely by controlling electrical parameters, i.e. the gate voltage, the chemical potential in the lead and the coupling strength between the leads and the DSM. These parameters are all related to the special properties of a semimetal. The spin polarized current generated by gate voltage is guaranteed by its semimetallic feature, because of which the density of state vanishes near Dirac nodes. The barrier contr

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31

Alvarez, Jean P., David Gordon, Jack Howard, Joshua Steier, Kalani Hettiarachchilage, and Neel Haldolaarachchige. "Remarkable Topological Features of Electronic Band Dispersion of IrGa and RhGa Compounds from First Principles." Journal of Undergraduate Reports in Physics 32, no. 1 (2022). http://dx.doi.org/10.1063/10.0020902.

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Exotic behavior of linearly dispersed electronic bands near the Fermi level implies advanced physical properties in a material. In this paper, we present an ab initio study of the electronic properties of IrGa and RhGa, with and without spin-orbit interaction, using first-principles calculations. Linearly dispersed band crossings, reminiscent of topological semimetallic band structures, were identified near the Fermi energy. These include type-I and type-II Dirac points and nodal lines. By applying compressive and tensile stress to the lattice along x, y, and z, the response to the band struct

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32

Zhang, Boyuan, Nobuya Maeshima, and Ken-ichi Hino. "Edge states of Floquet–Dirac semimetal in a laser-driven semiconductor quantum-well." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-82230-3.

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AbstractBand crossings observed in a wide range of condensed matter systems are recognized as a key to understand low-energy fermionic excitations that behave as massless Dirac particles. Despite rapid progress in this field, the exploration of non-equilibrium topological states remains scarce and it has potential ability of providing a new platform to create unexpected massless Dirac states. Here we show that in a semiconductor quantum-well driven by a cw-laser with linear polarization, the optical Stark effect conducts bulk-band crossing, and the resulting Floquet-Dirac semimetallic phase su

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33

Liu, Z. T., M. Y. Li, Q. F. Li, et al. "Direct observation of the Dirac nodes lifting in semimetallic perovskite SrIrO3 thin films." Scientific Reports 6, no. 1 (2016). http://dx.doi.org/10.1038/srep30309.

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34

Fujioka, J., T. Okawa, A. Yamamoto, and Y. Tokura. "Correlated Dirac semimetallic state with unusual positive magnetoresistance in strain-free perovskite SrIrO3." Physical Review B 95, no. 12 (2017). http://dx.doi.org/10.1103/physrevb.95.121102.

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35

Anemone, Gloria, Pablo Casado Aguilar, Manuela Garnica, et al. "Electron–phonon coupling in superconducting 1T-PdTe2." npj 2D Materials and Applications 5, no. 1 (2021). http://dx.doi.org/10.1038/s41699-021-00204-5.

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AbstractWe have determined the electron–phonon interaction in type II Dirac semimetallic 1T-PdTe2 by means of helium atom scattering. While 1T-PdTe2 is isostructural with 1T-PtTe2, only the former is superconductor. The difference can be traced to the substantially larger value of the electron–phonon coupling in 1T-PdTe2, λ = 0.58, obtained from the Debye-Waller attenuation of the He specular peak. With this value and the surface Debye temperature, ΘD = 106.2 K, we have figured out the superconducting critical temperature, Tc = 1.83 K given by the BCS theory, which is in good agreement with Tc

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36

Shende, Aditya, Shivendra Kumar Gupta, Devesh Kale, and Poorva Singh. "First-principles prediction of topological Dirac semimetallic phase in NaHgX (X= As and Bi)." Physics Letters A, May 2023, 128937. http://dx.doi.org/10.1016/j.physleta.2023.128937.

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37

Jang, Chan Wook, Yusuff Adeyemi Salawu, Jin Hee Kim, et al. "2D Weyl‐Semimetal States Achieved by a Thickness‐Dependent Crossover and Topological Phase Transition in Bi_0.96Sb_0.04 Thin Films." Advanced Functional Materials, August 30, 2023. http://dx.doi.org/10.1002/adfm.202305179.

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AbstractDespite theoretical expectations for 2D Weyl semimetals (WSMs), realizing stable 2D topological semimetal states experimentally is currently a great challenge. Here, 2D WSM states achieved by a thickness‐dependent topological phase transition from 3D Dirac semimetal to 2D WSM in molecular‐beam‐epitaxy‐grown Bi0.96Sb0.04 thin films are reported. 2D weak anti‐localization (WAL) and chiral anomaly arise in the Bi0.96Sb0.04 films for thicknesses below ≈10 nm, supporting 2D Weyl semimetallic transport in the films. This is particularly evident from magnetoresistance (MR) measurements which

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38

Liu, Jian, D. Kriegner, L. Horak, et al. "Strain-induced nonsymmorphic symmetry breaking and removal of Dirac semimetallic nodal line in an orthoperovskite iridate." Physical Review B 93, no. 8 (2016). http://dx.doi.org/10.1103/physrevb.93.085118.

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39

Zhang, Qiang, Satoshi Okamoto, Matthew B. Stone, et al. "Influence of magnetism on Dirac semimetallic behavior in nonstoichiometric Sr1−yMn1−zSb2(y∼0.07,z∼0.02)." Physical Review B 100, no. 20 (2019). http://dx.doi.org/10.1103/physrevb.100.205105.

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40

Zheng, W., R. Schönemann, N. Aryal, et al. "Detailed study of the Fermi surfaces of the type-II Dirac semimetallic candidates XTe2 ( X =Pd, Pt)." Physical Review B 97, no. 23 (2018). http://dx.doi.org/10.1103/physrevb.97.235154.

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41

Chen, K. W., X. Lian, Y. Lai, et al. "Bulk Fermi Surfaces of the Dirac Type-II Semimetallic Candidates MAl3 (Where M=V , Nb, and Ta)." Physical Review Letters 120, no. 20 (2018). http://dx.doi.org/10.1103/physrevlett.120.206401.

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42

Pizarro, José M., Severino Adler, Karim Zantout, et al. "Deconfinement of Mott localized electrons into topological and spin–orbit-coupled Dirac fermions." npj Quantum Materials 5, no. 1 (2020). http://dx.doi.org/10.1038/s41535-020-00277-3.

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Abstract The interplay of electronic correlations, spin–orbit coupling and topology holds promise for the realization of exotic states of quantum matter. Models of strongly interacting electrons on honeycomb lattices have revealed rich phase diagrams featuring unconventional quantum states including chiral superconductivity and correlated quantum spin Hall insulators intertwining with complex magnetic order. Material realizations of these electronic states are, however, scarce or inexistent. In this work, we propose and show that stacking 1T-TaSe2 into bilayers can deconfine electrons from a d

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43

Lleopart, Genis, Miquel Lopez-Suarez, Iberio de P. R. Moreira, and Stefan T. Bromley. "How graphenic are graphynes? Evidence for low-lying correlated gapped states in graphynes." Journal of Chemical Physics, November 14, 2022. http://dx.doi.org/10.1063/5.0125637.

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Graphynes can be structurally envisioned as 2D extensions to graphene whereby linearly bonded carbon linkages increase the distance between trigonal carbon nodes. Many graphynes have been predicted to exhibit a Dirac-like semimetallic (SEM) graphenic electronic structure which could potentially make them competitive with graphene for applications. Currently, most graphynes remain as attractive synthetic targets and their properties are still unconfirmed. Here, we demonstrate that the electronic structure of hexagonal α-graphyne is analogous to that of biaxially strained graphene. By comparison

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