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We study the interplay between collective electronic and lattice modes in polar metals in an applied magnetic field aligned with the polar axis. Static spin-orbit coupling leads to the appearance of a particle-hole spin-flip continuum that…

介观与纳米尺度物理 · 物理学 2023-12-27 Abhishek Kumar , Premala Chandra , Pavel A. Volkov

Spin-orbit coupling (SOC), the interaction between the spin and momentum of a quantum particle, is crucial for many important condensed matter phenomena. The recent experimental realization of SOC in neutral bosonic cold atoms provides a…

量子气体 · 物理学 2012-01-24 Yongping Zhang , Li Mao , Chuanwei Zhang

A theory of Electric Dipole Spin Resonance (EDSR), that is caused by various mechanisms of spin-orbit coupling, is developed as applied to free electrons in a parabolic quantum well. Choosing a parabolic shape of the well has allowed us to…

介观与纳米尺度物理 · 物理学 2009-11-11 Al. L. Efros , E. I. Rashba

Spin-flip excitations in a quantum Hall electron system at fixed filling factor nu=2 are modelled and studied under conditions of a strong Coulomb interaction when the `Landau level mixing' is a dominant factor determining the excitation…

强关联电子 · 物理学 2020-07-07 S. Dickmann , B. D. Kaysin

The coherent spin dynamics of resident carriers, electrons and holes, in semiconductor quantum structures is studied by periodical optical excitation using short laser pulses and in an external magnetic field. The generation and dephasing…

介观与纳米尺度物理 · 物理学 2015-06-03 I. A. Yugova , M. M. Glazov , D. R. Yakovlev , A. A. Sokolova , M. Bayer

Utilizing time-resolved Kerr rotation techniques, we have investigated the spin dynamics of a high mobility, low density two dimensional electron gas in a GaAs/Al0:35Ga0:65As heterostructure in dependence on temperature from 1.5 K to 30 K.…

其他凝聚态物理 · 物理学 2009-11-13 X. Z. Ruan , H. H. Luo , Yang Ji , Z. Y. Xu , V. Umansky

We study the interplay of both Rashba and Dresselhaus spin-orbit couplings (SOCs) and a uniform perpendicular magnetic field $\textbf{B}$ on the transport of a spin-polarized electron along a curved quantum wire. Eigenenergies and…

介观与纳米尺度物理 · 物理学 2014-10-27 Carlos Baldo , Cristine Villagonzalo

Spins of charge carriers, paramagnetic centers, and nuclei in semiconductor structures are known to be oriented if circular-polarized light is shined upon the structure. This is due to transfer of angular momentum from photons to various…

凝聚态物理 · 物理学 2007-05-23 Kirill Kavokin

We realize the dynamical 1D spin-orbit-coupling (SOC) of a Bose-Einstein condensate confined within an optical cavity. The SOC emerges through spin-correlated momentum impulses delivered to the atoms via Raman transitions. These are…

量子气体 · 物理学 2019-10-23 Ronen M. Kroeze , Yudan Guo , Benjamin L. Lev

The magneto-Coulomb oscillation, the single electron repopulation induced by external magnetic field, observed in a ferromagnetic single electron transistor is further examined in various ferromagnetic single electron devices. In case of…

介观与纳米尺度物理 · 物理学 2009-10-31 Keiji Ono , Hiroshi Shimada , Youiti Ootuka

Hole spin dephasing time due to the D'yakonov-Perel' mechanism in $p$-type GaAs (100) quantum wells with well separated light-hole and heavy-hole bands is studied by constructing and numerically solving the kinetic spin Bloch equations. We…

材料科学 · 物理学 2007-05-23 C. Lü , J. L. Cheng , M. W. Wu

A unified approach is presented for investigating coupled spin-orbital fluctuations within a realistic three-orbital model for strongly spin-orbit coupled systems with electron fillings $n=3,4,5$ in the $t_{2g}$ sector of…

强关联电子 · 物理学 2021-07-05 Shubhajyoti Mohapatra , Avinash Singh

We evaluate the distribution of Hall conductances in magnetic subbands of two-dimensional electron gas with Rashba spin-orbit (SO) coupling placed in a periodic potential and perpendicular magnetic field. In this semiconductor structure the…

介观与纳米尺度物理 · 物理学 2009-11-13 V. Ya. Demikhovskii , A. A. Perov

Spintronics is an emerging paradigm with the aim to replace conventional electronics by using electron spins as information carriers. Its utility relies on the magnitude of the spin-relaxation, which is dominated by spin- orbit coupling…

强关联电子 · 物理学 2013-11-25 Peter Boross , Balazs Dora , Annamaria Kiss , Ferenc Simon

The cooperative resonance for a spin one half system interacting with dc and ac magnetic field is considered. This interaction in the system collective regime can result in parametic resonance and rapid excitation of the excited spin state…

量子物理 · 物理学 2017-10-25 Yuri V. Rostovtsev , Vladimir L. Safonov , Marlan O. Scully

An electron propagating through a solid carries spin angular momentum in addition to its mass and charge. Of late there has been considerable interest in developing electronic devices based on the transport of spin, which offer potential…

介观与纳米尺度物理 · 物理学 2007-05-23 C. P. Weber , N. Gedik , J. E. Moore , J. Orenstein , Jason Stephens , D. D. Awschalom

The electronic structures and thermoelectric properties of semiconducting transition-metal dichalcogenide monolayers $\mathrm{MX_2}$ (M=Zr, Hf, Mo, W and Pt; X=S, Se and Te) are investigated by combining first-principles and Boltzmann…

材料科学 · 物理学 2017-08-23 San-Dong Guo , Jian-Li Wang

We show that the electron spin polarization generated by an electrical current may have its direction controlled and magnitude amplified by periodic optical excitation. The electrical and optical spin control methods were combined and…

介观与纳米尺度物理 · 物理学 2014-07-17 Felix G. G. Hernandez , Gennady M. Gusev , Askhat K. Bakarov

Recently experiments have shown very significant spin activity in biological molecules such as DNA, proteins, oligopeptides and aminoacids. Such molecules have in common their chiral structure, time reversal symmetry and the absence of…

介观与纳米尺度物理 · 物理学 2020-07-29 Juan Daniel Torres , Raul Hidalgo , Solmar Varela , Ernesto Medina

We show that spin-orbit coupling (SOC) gives rise to pairing instability in a highly polarized two-dimensional Fermi gas for arbitrary interaction strength. The pairing instability can lead to a Fulde-Ferrell-Larkin-Ovchinnikov-like…

量子气体 · 物理学 2012-10-08 Wei Yi , Wei Zhang