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We theoretically demonstrate that a rotating electric-field component of circularly polarized microwave or terahertz light can induce electron-spin polarization within a few picoseconds in a two-dimensional electron system with the Rashba…

强关联电子 · 物理学 2018-09-21 Masahito Mochizuki , Keisuke Ihara , Jun-ichiro Ohe , Akihito Takeuchi

The hyperfine splittings in heavy quarkonia are studied using new experimental data on the di-electron widths. The smearing of the spin-spin interaction is taken into account, while the radius of smearing is fixed by the known…

高能物理 - 唯象学 · 物理学 2008-11-26 A. M. Badalian , B. L. G. Bakker

We describe the simultaneous effects of the spin-orbit (SO) perturbation and a magnetic field $B$ on a disk shaped quantum dot (QD). {As it is known the} combination of electrostatic forces among the $N$ electrons confined in the QD and the…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Bellucci , P. Onorato

We report the observation of Shubnikov-de Haas (SdH) oscillations in single crystals of the Rashba spin-splitting compound BiTeI, from both longitudinal ($R_{xx}(B)$) and Hall ($R_{xy}(B)$) magnetoresistance. Under magnetic field up to 65…

材料科学 · 物理学 2013-05-08 C. Martin , E. D. Mun , H. Berger , V. S. Zapf , D. B. Tanner

We study the transverse electron focusing in a two dimensional electron gas with Rashba spin-orbit coupling. We show that the interplay between the external magnetic field and the spin-orbit coupling gives two branches of states with…

介观与纳米尺度物理 · 物理学 2007-05-23 Gonzalo Usaj , C. A. Balseiro

We investigate the 1/3 monolayer $\alpha$-Pb/Si(111) surface by scanning tunneling spectroscopy (STS) and fully relativistic first-principles calculations. We study both the high-temperature $\sqrt{3}\times\sqrt{3}$ and low-temperature…

Materials with strong spin-orbit coupling (SOC) have in recent years become a subject of intense research due to their potential applications in spintronics and quantum information technology. In particular, in systems which break inversion…

We fabricated spin-polarized surface electronic states with tunable Fermi level from semiconductor to low-dimensional metal in the Bi/GaSb(110)-(2$\times$1) surface using angle-resolved photoelectron spectroscopy (ARPES) and spin-resolved…

The electronic band structure and Fermi surface of ZrTe_3 was precisely determined by linearly polarized angle-resolved photoelectron spectroscopy. Several bands and a large part of the Fermi surface are found to be split by 100-200 meV…

强关联电子 · 物理学 2015-05-13 Moritz Hoesch , Xiaoyu Cui , Kenya Shimada , Corsin Battaglia , Shin-ichi Fujimori , Helmuth Berger

Within density functional theory, we study bulk band structure and surface states of BiTeBr. We consider both ordered and disordered phases which differ in atomic order in the Te-Br sublattice. On the basis of relativistic ab-initio…

材料科学 · 物理学 2013-11-25 S. V. Eremeev , I. P. Rusinov , I. A. Nechaev , E. V. Chulkov

Electron spins hold great promise for quantum computation due to their long coherence times. An approach to realize interactions between distant spin-qubits is to use photons as carriers of quantum information. We demonstrate strong…

介观与纳米尺度物理 · 物理学 2018-08-10 A. J. Landig , J. V. Koski , P. Scarlino , U. C. Mendes , A. Blais , C. Reichl , W. Wegscheider , A. Wallraff , K. Ensslin , T. Ihn

We use numerically exact diagonalization to calculate the spin-orbit and phonon-induced triplet-singlet relaxation rate in a two-electron quantum dot exposed to a tilted magnetic field. Our scheme includes a three-dimensional description of…

强关联电子 · 物理学 2012-04-19 J. P. Hansen , S. A. Sørngård , M. Førre , E. Rasanen

We study the magnetic resonant x-ray scattering (RXS) spectra around the $K$ edge of Cu in KCuF$_3$ on the basis of an {\em ab initio} calculation. We use the full-potential linearlized augmented plane wave method in the LDA$+U$ scheme, and…

强关联电子 · 物理学 2009-11-07 M. Takahashi , M. Usuda , J. Igarashi

Recent measurements of the $\eta_b(1S)$, the ground state of the $b\bar{b}$ system, show the splitting between it and the $\Up(1S)$ to be 69.5$\pm$3.2 MeV, considerably larger than lattice QCD and potential model predictions, including…

高能物理 - 唯象学 · 物理学 2011-08-09 Stanley F. Radford , Wayne W. Repko

The Schroedinger equation for a spinless charged particle on a curved surface under an electromagnetic field has been obtained by adopting a proper gauge which allows the separation of the on-surface and transverse dynamics. [Phys. Rev.…

介观与纳米尺度物理 · 物理学 2015-06-12 Taichi Kosugi

The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well (QW) structures are extracted from photocurrent measurements on n-type InAs QWs containing a two-dimensional electron…

We investigate the quasiparticle excitations in the FFLO- type helical state of a superconductor with inversion-symmetry breaking and strong Rashba spin-orbit coupling. We restrict to a state with single finite momentum of Cooper pairs in…

超导电性 · 物理学 2022-05-04 Alireza Akbari , Peter Thalmeier

We report bulk Rashba spin splitting (RSS) and associated Dirac surface state in (Bi$_{0.9}$Sb$_{0.1})_2$Se$_3$, exhibiting dominant $p$-type conductivity. We argue from the synchrotron diffraction studies that origin of the bulk RSS is due…

We study spin control for an electron confined in a flake of silicene. We find that the lowest-energy conduction-band levels are split by the diagonal intrinsic spin-orbit coupling into Kramers doublets with a definite projection of the…

介观与纳米尺度物理 · 物理学 2018-04-30 Bartlomiej Szafran , Alina Mrenca-Kolasinska , Bartlomiej Rzeszotarski , Dariusz Zebrowski

Here, we report on angle-resolved photoemission studies of the electronic $\pi$ states of high-quality epitaxial graphene layer on a Ni(111) surface. In this system electron binding energy of the $\pi$ states shows a strong dependence on…

材料科学 · 物理学 2010-10-08 Yu. S. Dedkov , M. Fonin , U. Rüdiger , C. Laubschat