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Journal articles on the topic 'Anomalous Zeeman effect'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Ovsiannikov, V. D., and E. V. Tchaplyguine. "The PaschenBack effect in helium spectra revisited." Canadian Journal of Physics 80, no. 11 (November 1, 2002): 1383–89. http://dx.doi.org/10.1139/p02-102.

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The complete information for the intensities of the Zeeman components in the helium triplet lines corresponding to the radiation transitions n3 PJM [Formula: see text] n' 3S1M ' is analyzed in the field-strength region from anomalous Zeeman effects to complete PaschenBack effects. The diagonalization of the paramagnetic interaction for n3PJM was carried out for the states with magnetic quantum number M = 0 in the Hilbert space of dimension 3, taking account of all three fine-structure sublevels, J = 0,1,2. The results of the numerical calculations for line positions and intensities are presented in a table and figures. The departure from the previously known data is discussed. PACS Nos.: 32.60+i, 32.70Fw, 32.30-r

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2

Weaire, D., and S. O'Connor. "Unfulfilled renown: Thomas Preston (1860–1900) and the anomalous Zeeman effect." Annals of Science 44, no. 6 (November 1987): 617–44. http://dx.doi.org/10.1080/00033798700200381.

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3

Santos, Willien O., and Andre M. C. Souza. "The Anomalous Zeeman Effect for the Hydrogen Atom in Noncommutative Space." International Journal of Theoretical Physics 51, no. 12 (August 10, 2012): 3882–90. http://dx.doi.org/10.1007/s10773-012-1280-x.

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4

Werner, J., H. Wallis, and W. Ertmer. "Atoms with anomalous Zeeman effect in a 1D-magneto-optical molasses." Optics Communications 94, no. 6 (December 1992): 525–29. http://dx.doi.org/10.1016/0030-4018(92)90599-m.

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5

Santos, Willien O., and Andre M. C. Souza. "Phenomenology of noncommutative phase space via the anomalous Zeeman effect in hydrogen atom." International Journal of Modern Physics A 29, no. 31 (December 20, 2014): 1450177. http://dx.doi.org/10.1142/s0217751x14501772.

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The Hamiltonian describing the anomalous Zeeman effect for the hydrogen atom on noncommutative (NC) phase space is studied using the nonrelativistic limit of the Dirac equation. To preserve gauge invariance, space noncommutativity must be dropped. By using first-order perturbation theory, the correction to the energy is calculated for the case of a weak external magnetic field. We also obtained the orbital and spin g-factors on the NC phase space. We show that the experimental value for the spin g-factor puts an upper bound on the magnitude of the momentum NC parameter of the order of [Formula: see text], 34 μ eV /c. On the other hand, the experimental value for the spin g-factor was used to establish a correction introduced by NC phase space to the presently accepted value of Planck's constant with an uncertainty of 2 part in 1035.

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6

Farias, Claudio F., and Edilberto O. Silva. "Solution of the κ-Deformed Dirac Equation with Vector and Scalar Interactions in the Context of Spin and Pseudospin Symmetries." Advances in High Energy Physics 2020 (February 1, 2020): 1–12. http://dx.doi.org/10.1155/2020/4513698.

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The deformed Dirac equation invariant under the κ-Poincaré-Hopf quantum algebra in the context of minimal and scalar couplings under spin and pseudospin symmetry limits is considered. The κ-deformed Pauli-Dirac Hamiltonian allows us to study effects of quantum deformation in a class of physical systems, such as a Zeeman-like effect, Aharonov-Bohm effect, and an anomalous-like contribution to the electron magnetic moment, between others. In our analysis, we consider the motion of an electron in a uniform magnetic field and interacting with (i) a planar harmonic oscillator and (ii) a linear potential. We verify that the particular choice of a linear potential induces a Coulomb-type term in the equation of motion. Expressions for the energy eigenvalues and wave functions are determined taking into account both symmetry limits. We verify that the energies and wave functions of the particle are modified by the deformation parameter as well as by the element of spin.

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7

Kravchenko, Eleonora A. "Magnetism of Bismuth(III) Oxide-Based Compounds." Solid State Phenomena 233-234 (July 2015): 113–16. http://dx.doi.org/10.4028/www.scientific.net/ssp.233-234.113.

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209Bi NQR experiments, including analysis of zero-field line shapes, Zeeman-perturbed patterns and zero-field spin-echo envelopes were made to examine magnetic splitting of resonances revealed in the spectra of Main group element compounds of general composition BakBilAmOn (A=Al, В, Ge, Br, Cl). The results were explained assuming the existence in the compounds of ordered internal magnetic fields from 5 to 250 G which notably exceed those of nuclear magnetic moments. A dramatic (8−10-fold) increase in the resonance intensities, instead of broadening and fading, was observed for such compounds upon applying weak (below 500 Oe) external magnetic fields. The effect was shown to relate to the spin dynamics, namely, to the influence of external magnetic field on the nuclear spin-spin relaxation of the compounds with anomalous magnetic properties. In α-Bi2O3, paramagnetism depending on the thermal prehistory of a sample was found using SQUID-technique; magnetoelectric effect linear in magnetic field was also observed for this oxide.

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8

Izmailov, A. Ch. "Effect of interatomic collisions on the interaction of an electromagnetic wave of arbitrary intensity with a resonance gas medium under an anomalous Zeeman effect." Radiophysics and Quantum Electronics 29, no. 7 (July 1986): 595–601. http://dx.doi.org/10.1007/bf01034148.

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9

Datta, Sambhu N. "Transformed Dirac equation for the hydrogen atom, comparison with previous approaches in momentum space, and the anomalous Zeeman effect in momentum representation." International Journal of Quantum Chemistry 96, no. 1 (2003): 42–55. http://dx.doi.org/10.1002/qua.10765.

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10

Goncharov, A. N., S. V. Gateva-Kosteva, M. N. Skvortsov, and V. P. Chebotayev. "Direct observation of the anomalous zeeman effect at the X ? B transition of molecular iodine by the method of nonlinear laser spectroscopy." Applied Physics B Photophysics and Laser Chemistry 52, no. 4 (April 1991): 311–14. http://dx.doi.org/10.1007/bf00325411.

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11

Valagiannopoulos, Constantinos, S. Ali Hassani Gangaraj, and Francesco Monticone. "Zeeman gyrotropic scatterers." Nanomaterials and Nanotechnology 8 (January 1, 2018): 184798041880808. http://dx.doi.org/10.1177/1847980418808087.

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Anomalous scattering effects (invisibility, superscattering, Fano resonances, etc) enabled by complex media and metamaterials have been the subject of intense efforts in the past couple of decades. In this article, we present a full analysis of the unusual and extreme scattering properties of an important class of complex scatterers, namely, gyrotropic cylindrical bodies, including both homogeneous and core–shell configurations. Our study unveils a number of interesting effects, including Zeeman splitting of plasmonic scattering resonances, tunable gyrotropy-induced rotation of dipolar radiation patterns as well as extreme Fano resonances and non-radiating eigenmodes (embedded eigenstates) of the gyrotropic scatterer. We believe that these theoretical findings may enable new opportunities to control and tailor scattered fields beyond what is achievable with isotropic reciprocal objects, being of large significance for different applications, from tunable directive nano-antennas to selective chiral sensors and scattering switches, as well as in the context of nonreciprocal and topological metamaterials.

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12

Shulyak, Denis, S. Khan, and O. Kochukhov. "Advanced model atmospheres with magnetic field effects included." Proceedings of the International Astronomical Union 4, S259 (November 2008): 407–8. http://dx.doi.org/10.1017/s1743921309030890.

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AbstractThe atmospheres of magnetic chemically peculiar (mCP) stars display the presence of magnetic fields of different geometry and strength, ranging from a few hundred G up to tens of kG. Except several very approximate attempts there were no detailed studies of magnetic field effects on model atmospheres structure, possibly leading to errors in the stellar parameter determination and abundance analysis routines. We present the magnetic model atmospheres based on LLmodels code which accounts for the detailed treatment of anomalous Zeeman splitting and polarized radiative transfer.

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13

Izmailov, A. Ch. "Nonlinear magnetooptical phenomena in gases with anomalous Zeemann effect (review)." Journal of Applied Spectroscopy 47, no. 3 (September 1987): 853–65. http://dx.doi.org/10.1007/bf00659423.

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14

Prado, S. J., C. Trallero-Giner, V. López-Richard, A. M. Alcalde, and G. E. Marques. "Zeeman effect and magnetic anomalies in narrow-gap semiconductor quantum dots." Physica E: Low-dimensional Systems and Nanostructures 20, no. 3-4 (January 2004): 286–89. http://dx.doi.org/10.1016/j.physe.2003.08.020.

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15

Cowley, Charles R. "Abundances in Magnetic Ap Stars." International Astronomical Union Colloquium 138 (1993): 18–25. http://dx.doi.org/10.1017/s025292110002025x.

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AbstractThe spatial inhomogeneities, Zeeman broadening, and extreme abundance anomalies have thus far prevented definitive analyses of magnetic CP stars. Nevertheless, the abundance anomalies are so large that many of them have been known for decades. Abundance excesses of iron-peak elements of factors of 10 to 100 are common. Relative abundances on the iron peak are not constant. The lines of vanadium and nickel are often weak, and these elements may even be deficient in some stars. In spitè of the large variations, the odd-even effect persists; there is only minor evidence that chemical separation has perturbed the nuclear pattern. The lanthanide rare earths can have excesses of 100 to 1000 or even more in extreme cases. For these elements there is some evidence of fractionation. The actinide rare earth elements uranium and thorium are weakly (but surely!) present in a few of the magnetic CP stars: the best case is HR 465.

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16

Sun, Zeliang, Zhipeng Cao, Jianhua Cui, Changsheng Zhu, Donghui Ma, Honghui Wang, Weizhuang Zhuo, et al. "Large Zeeman splitting induced anomalous Hall effect in ZrTe5." npj Quantum Materials 5, no. 1 (June 2, 2020). http://dx.doi.org/10.1038/s41535-020-0239-z.

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17

Yokoyama, Tomohiro, Mikio Eto, and Yuli V. Nazarov. "Anomalous Josephson effect induced by spin-orbit interaction and Zeeman effect in semiconductor nanowires." Physical Review B 89, no. 19 (May 8, 2014). http://dx.doi.org/10.1103/physrevb.89.195407.

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18

Wang, Yishu, Patrick A. Lee, D. M. Silevitch, F. Gomez, S. E. Cooper, Y. Ren, J. Q. Yan, D. Mandrus, T. F. Rosenbaum, and Yejun Feng. "Antisymmetric linear magnetoresistance and the planar Hall effect." Nature Communications 11, no. 1 (January 10, 2020). http://dx.doi.org/10.1038/s41467-019-14057-6.

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AbstractThe phenomena of antisymmetric magnetoresistance and the planar Hall effect are deeply entwined with ferromagnetism. The intrinsic magnetization of the ordered state permits these unusual and rarely observed manifestations of Onsager’s theorem when time reversal symmetry is broken at zero applied field. Here we study two classes of ferromagnetic materials, rare-earth magnets with high intrinsic coercivity and antiferromagnetic pyrochlores with strongly-pinned ferromagnetic domain walls, which both exhibit antisymmetric magnetoresistive behavior. By mapping out the peculiar angular variation of the antisymmetric galvanomagnetic response with respect to the relative alignments of the magnetization, magnetic field, and electrical current, we experimentally distinguish two distinct underlying microscopic mechanisms: namely, spin-dependent scattering of a Zeeman-shifted Fermi surface and anomalous electron velocities. Our work demonstrates that the anomalous electron velocity physics typically associated with the anomalous Hall effect is prevalent beyond the ρxy(Hz) channel, and should be understood as a part of the general galvanomagnetic behavior.

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19

Zhang, Chuanwei. "Spin-orbit coupling and perpendicular Zeeman field for fermionic cold atoms: Observation of the intrinsic anomalous Hall effect." Physical Review A 82, no. 2 (August 27, 2010). http://dx.doi.org/10.1103/physreva.82.021607.

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20

McGuyer, B. H., C. B. Osborn, M. McDonald, G. Reinaudi, W. Skomorowski, R. Moszynski, and T. Zelevinsky. "Nonadiabatic Effects in Ultracold Molecules via Anomalous Linear and Quadratic Zeeman Shifts." Physical Review Letters 111, no. 24 (December 9, 2013). http://dx.doi.org/10.1103/physrevlett.111.243003.

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21

Yoshizawa, Shunsuke, Takahiro Kobayashi, Yoshitaka Nakata, Koichiro Yaji, Kenta Yokota, Fumio Komori, Shik Shin, Kazuyuki Sakamoto, and Takashi Uchihashi. "Atomic-layer Rashba-type superconductor protected by dynamic spin-momentum locking." Nature Communications 12, no. 1 (March 5, 2021). http://dx.doi.org/10.1038/s41467-021-21642-1.

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AbstractSpin-momentum locking is essential to the spin-split Fermi surfaces of inversion-symmetry broken materials, which are caused by either Rashba-type or Zeeman-type spin-orbit coupling (SOC). While the effect of Zeeman-type SOC on superconductivity has experimentally been shown recently, that of Rashba-type SOC remains elusive. Here we report on convincing evidence for the critical role of the spin-momentum locking on crystalline atomic-layer superconductors on surfaces, for which the presence of the Rashba-type SOC is demonstrated. In-situ electron transport measurements reveal that in-plane upper critical magnetic field is anomalously enhanced, reaching approximately three times the Pauli limit at T = 0. Our quantitative analysis clarifies that dynamic spin-momentum locking, a mechanism where spin is forced to flip at every elastic electron scattering, suppresses the Cooper pair-breaking parameter by orders of magnitude and thereby protects superconductivity. The present result provides a new insight into how superconductivity can survive the detrimental effects of strong magnetic fields and exchange interactions.

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