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Chinese Physics B 2012年第3期21卷 371-378页

作者：薛惠杰吕天全张红晨尹海涛催莲贺泽龙 Department of physics Center for Condensed Matter Science and TechnologyHarbin Institute of Technology Heilongjiang Key Laboratory for Low Dimensional and Mesoscopic Physics School of Physics and Electronic EngineeringHarbin Normal University Space Materials and Environment Engineering Laboratory Harbin Institute of Technology

The thermoelectric and the thermospin transport properties, including electrical conductivity, Seebeck coefficient, thermal conductivity, and thermoelectric figure of merit, of a parallel coupled double-quantum-dot Aharonov-Bohm interferometer are investigated by means of the Green function technique. The periodic Anderson model is used to describe the quantum dot system, the Rashba spin-orbit interaction and the zeeman splitting under a magnetic field are considered. The theoretical results show the constructive contribution of the Rashba effect and the influence of the magnetic field on the thermospin effects. We also show theoretically that material with a high figure of merit can be obtained by tuning the zeeman splitting energy only.

关键词： thermospin effect spin Seebeck coefficient zeeman splitting Rashba spin-orbit inter-action

Anomalous Josephson effect between d-wave superconductors through a two-dimensional electron gas with both Rashba spin-orbit coupling and zeeman splitting

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Chinese Physics B 2023年第7期32卷 477-488页

作者：杜彬豪杨谋胡梁宾 Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510631China

Based on the Bogoliubov-de Gennes equation and the extended McMillan’s Green’s function formalism,we study theoretically the Josephson effect between two d-wave superconductors bridged by a ballistic two-dimensional electron gas with both Rashba spin-orbit coupling and zeeman *** show that due to the interplay of Rashba spin-orbit coupling and zeeman splitting and d-wave pairing,the current-phase relation in such a heterostructure may exhibit a series of novel features and can change significantly as some relevant parameters are *** particular,anomalous Josephson current may occur at zero phase bias under various different situations if both time reversal symmetry and inversion symmetry of the system are simultaneously broken,which can be realized by tuning some relevant parameters of the system,including the relative orientations and the strengths of the zeeman field and the spin-orbit field in the bridge region,the relative orientations of the a axes in two superconductor leads,or the relative orientations between the zeeman field in the bridge region and the a axes in the superconductor *** show that both the magnitude and the direction of the anomalous Josephson current may depend sensitively on these relevant parameters.

关键词： anomalous Josephson effect d-wave pairing Rashba spin-orbit coupling zeeman splitting

Features of Recombination Radiation of GaAs Type Semiconductors with the Participation of Fine Acceptor Levels in a Magnetic Field

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Journal of Applied Mathematics and Physics 2024年第7期12卷 2407-2420页

作者： Nosirjon Khaydarovich Yuldashev Iftixorjon Isaqovich Yulchiev Bozorboy Joboraliyevich Akhmadaliev Khusanboy Manopovich Sulaymonov Fergana Polytechnic Institute Fergana Uzbekistan

Using the method of Picus and Beer invariants, general expressions are obtained for the total intensity I and the degree of circular polarization Р*** the luminescence of GaAs-type semiconductors with the participation of shallow acceptor levels in a longitudinal magnetic field H. Special cases are analyzed depending on the value and direction of the magnetic field strength, as well as on the constants of the g-factor of the acceptor g1,g2and the conduction band electron ge. In the case of a strong magnetic field H// [100], [111], [110], a numerical calculation of the angular dependence of the quantities I and Р*** performed for some critical values of g2/g1, at which Р*** a sharp anisotropy in the range from −100% to +100%, and the intensity of the crystal radiation along the magnetic field tends to a minimum value.

关键词： Semiconductor Recombination Radiation Shallow Acceptor Center Magnetic Field zeeman splitting g-Factors Anisotropy Circular Polarization Intensity

Orbital magnetization in semiconductors

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Chinese Physics B 2009年第12期18卷 5431-5436页

作者：方诚王志刚李树深张平 Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of Sciences Physics Department East China Institute of Technology Institute of Applied Physics and Computational Mathematics Institute of Applied Physics and Computational Mathematics Beijing 100088China Center for Applied Physics and Technology Peking University

This paper theoretically investigates the orbital magnetization of electron-doped （n-type） semiconductor het-erostructures and of hole-doped （p-type） bulk semiconductors, which are respectively described by a two-dimensional electron/hole Hamiltonian with both the included Rashba spin-orbit coupling and zeeman splitting terms. It is the zeeman splitting, rather than the Rashba spin-orbit coupling, that destroys the time-reversal symmetry of the semiconductor systems and results in nontrivial orbital magnetization. The results show that the magnitude of the orbital magnetization per hole and the Hall conductance in the p-type bulk semiconductors are about 10^-2-10^-1 effective Bohr magneton and 10^-1-1 e^2/h, respectively. However, the orbital magnetization per electron and the Hall conductance in the n-type semiconductor heterostructures are too small to be easily observed in experiment.

关键词： orbital magnetization zeeman splitting Berry phase effect semiconductor

Comparing simulated and experimental spectral line splitting in visible spectroscopy diagnostics in the HL-2A tokamak

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Plasma Science and Technology 2023年第2期25卷 36-46页

作者：吴静杜永勤陈鹏周航宇侯玉梅姚列明 University of Electronic Science and Technology of China Chengdu 610054People's Republic of China Southwestern Institute of Physics Chengdu 610041People's Republic of China

We established the passive-visible spectroscopy diagnostics(P-VSD)and active-VSD(A-VSD)spectral splitting models for the HL-2A *** splitting due to the influence of electromagnetic fields on the spectra in VSD is *** splitting induced by the magnetic field(B)is used to distinguish reflected light overlap in the divertor for *** splitting caused by the Lorentz electric field(E_(Lorentz))from the neutral beam injection particle’s interaction with the magnetic field(V_(beam)×B)is used to measure the safety factor q profile for *** give a comparison and error analysis by fitting the experimental spectra with the simulation *** distinguishing of edge(scrape-off layer and divertor)hydrogen/deuterium spectral lines and the q profile derived from the spectra provides a reference for HL-2M VSD.

关键词： visible spectroscopy diagnostics stark splitting zeeman splitting wavelength broaden

Spin texturing in a parabolically confined quantum wire with Rashba and Dresselhaus spin-orbit interactions

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Chinese Physics B 2014年第1期23卷 347-356页

作者： S. Sarıkurt S. Şakiroğlu K. Akgüngör İ Sökmen Dokuz Eylül University The Graduate School of Natural and Applied Sciences Physics Department Tınaztepe Campus 35390 İzmir Turkey Dokuz Eylül University Faculty of Science Physics Department Tınaztepe Campus 35390 İzmir Turkey

In this study, we investigate theoretically the effect of spin-orbit coupling on the energy level spectrum and spin texturing of a quantum wire with a parabolic confining potential subjected to the perpendicular magnetic field. Highly accurate numerical calculations have been carried out using a finite element method. Our results reveal that the interplay between the spin-orbit interaction and the effective magnetic field significantly modifies the band structure, producing additional subband extrema and energy gaps. Competing effects between external field and spin-orbit interactions introduce comp｜ex features in spin texturing owing to the couplings in energy subbands. We obtain that spatia~ modulation of the spin density along the wire width can be considerably modified by the spin-orbit coupling strength, magnetic field and charge carrier concentration.

关键词： spin—orbit coupling zeeman splitting quantum wire spin texture

Quantum interference effects in a multidriven transition Fg=3←→Fe=2

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Chinese Physics B 2006年第6期15卷 1262-1267页

作者：董雅宾张俊香王海红郜江瑞 State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronlcs Shanxl University Taiyuan 030006 China

We have theoretically and experimentally studied the quantum coherence effects of a degenerate transition Fg =3←→Fe=2 system interacting with a weak linearly polarized （with σ＋ components） probe light and a strong linearly polarized （with σ＋ components） coupling field. Due to the competition between the drive Rabi frequency and the zeeman splitting, electromagnetically induced transparency （EIT） and electromagnetically induced absorption （EIA） are present at the different values of applied magnetic field in the case where the zeeman splitting of excited state Δe is larger than the zeeman splitting of ground state Δg （i.e.Δe 〉 Δg）.

关键词： quantum coherence degenerate two-level system zeeman splitting