Spin Orbit Coupling And Topological Phases
- STM Studies of Spin-Orbit Coupled Phases in Real- and....
- Three-dimensional photonic topological insulator without spin-orbit.
- Exotic Quantum Phenomena and Topological Phases in Spin-Orbit-Coupled.
- Excited-state quantum phase transitions in spin-orbit-coupled Bose gases.
- Topological phase transitions on the square-hexagon lattice.
- Spin-orbit coupling and topological phases for ultracold.
- Spin-orbit coupling controlling the topological vortical phase.
- Review Article: Spin-orbit coupling and topological phases.
- Physics - On-Demand Spin-Orbit Coupling.
- Spontaneous Currents and Topologically Protected States... - SpringerLink.
- Review article: Spin-orbit Coupling and Topological Phases.
- Effects of spin-orbit coupling on the BKT transition and the.
- Brillouin-Wigner theory for Floquet topological phase transitions in.
STM Studies of Spin-Orbit Coupled Phases in Real- and....
We prove that curvature effects in low-dimensional nanomaterials can promote the generation of topological states of matter by considering the paradigmatic example of quantum wires with Rashba spin-orbit coupling, which are periodically corrugated at the nanometer scale. The effect of the periodic curvature generally results in the appearance of insulating phases with a corresponding novel. The U.S. Department of Energy's Office of Scientific and Technical Information. We study theoretically the interplay effect of Zeeman field and modulated spin-orbit coupling on topological properties of a one-dimensional dimerized lattice, known as Su-Schrieffer-Heeger model. We find that in the weak (strong) modulated spin-orbit coupling regime, trivial regions or nontrivial ones with two pairs of zero-energy states can be turned into nontrivial regions by applying a.
Three-dimensional photonic topological insulator without spin-orbit.
Abstract. We review a class of translational-invariant insulators without spin-orbit coupling, as may be realized in intrinsically spinless systems, e.g., photonic crystals and ultra-cold atoms. Some of these insulators have no time-reversal symmetry as well, i.e., the relevant symmetries are purely crystalline. Superconducting states using spin-orbit coupling and Zeeman fields made in the context of cold fermions.15,16 It has also been pointed out by Alicea17 that in the presence of Dresselhaus spin-orbit coupling coexisting along with the usual Rashba coupling, the topological superconducting state in electron-doped semiconductors can be realized. (BEC) [36,37] and spin-orbit coupled BEC [38-40], where skyrmions are spontaneously produced by SOC in the latter case without rotation. We also argue that the transverse polarization textures may be used to probe and characterize the topological phase transitions and the associated Majorana bound states in finite spin-orbit coupled Fermi.
Exotic Quantum Phenomena and Topological Phases in Spin-Orbit-Coupled.
The reported studies of the effect of the Rashba spin-orbit coupling in hybrid structures with induced superconductivity have shown that the spin-orbit coupling can be a key mechanism to implement both inhomogeneous phase structures (e.g., phase batteries) and topologically nontrivial superconducting phases in such systems.
Excited-state quantum phase transitions in spin-orbit-coupled Bose gases.
Coupling on higher-order topological phases, we couple spinful fermions to the lattice degrees of freedom. The hybrid system is described by the Holstein electron-phonon coupling Hamiltonian53 H.
Topological phase transitions on the square-hexagon lattice.
Spin-orbit coupling (SOC) is central to many physical phenomena, including fine structures of atomic spectra and topological phases in ultracold atoms. Whereas, in general, SOC is fixed in a.
Spin-orbit coupling and topological phases for ultracold.
(2) Novel Quantum , topological Phases, phase transitions driven by interactions in various spin-orbit coupled systems. Recently the investigation and control of spin-orbit coupling (SOC) have become subjects of intensive research in both condensed matter and cold atom systems after the discovery of the topological insulators. Spin-orbit coupling, superconductivity, and topological states Sb2Te3 GeTe-based heterostructures. GeTe is a narrow band gap semiconductor that goes superconducting at low temperatures and additionally, due to its non-centrosymmetric unit cell, has a strong spin-orbit field.... and thus towards explorations of exotic topological phases. [1] V.
Spin-orbit coupling controlling the topological vortical phase.
The spin-orbit coupling is found to change the hopping terms in the unit cell and therefore change the winding vectors. • The Zeeman field can only shift the winding vectors along the x-axis. • The existence of the zero-mode of the H + H can used to judge the topological non-trivial phases. 1. Introduction. Spin. Spin flips occur only due to intrinsic spin-orbit inter-actions within the atoms; therefore, spin-orbit coupling by spin-flip Raman processes relies on the spin-orbit coupling within the atom. Since the spontaneous emission rate and the two-photon Rabi frequency for Raman spin-flip pro-cesses scale in the same way with respect to the.
Review Article: Spin-orbit coupling and topological phases.
FERMI GASES WITH SYNTHETIC SPIN-ORBIT COUPLING. Volume 2, 2014. Xia-ji Liu. Jing Zhang. Han Pu. Hui Hu. Download Download PDF. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper. Download Download PDF.
Physics - On-Demand Spin-Orbit Coupling.
Spin-orbit (SO) coupling - the interaction between a quantum particle's spin and its mo-... S.-C. Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells. Science 314. Oct 07, 2016 · Our realization of 2D SO coupling with advantages of small heating and topological stability opens a broad avenue in cold atoms to study exotic quantum phases, including topological superfluids. The spin-orbit (SO) interaction of an electron is a relativistic quantum mechanics effect that characterizes the coupling between the motion and spin. Recently, searching large-bulk band gap topological insulator (TI) is under intensive study. Through k·P theory and first-principles calculations analysis on antimonene, we find that α-phase antimonene can be tuned to a 2D TI under an in-plane anisotropic strain and the magnitude of direct bulk band gap (SOC gap) depends on the strength of spin-orbit coupling (SOC) which is strain-dependent.
Spontaneous Currents and Topologically Protected States... - SpringerLink.
Sep 17, 2020 · The band structures and density of states (DOS) of all the three structural configurations of CsPbBr3 without spin–orbit coupling (SOC = 0) and with the addition of spin–orbit coupling (SOC ≠ 0) effects were calculated, using density functional theory. Upon the inclusion of the spin–orbit coupling, the bandgaps exhibit reductions of 1.27 eV, 1.16 eV and 1.08 eV for the cubic. Also, the effects of the Rashba spin-orbit coupling and staggered potential are discussed. We find that the Rashba spin-orbit coupling can drive the square-hexagon lattice into topological nontrivial phase at 1/5 and 2/5 filling fraction. The helical edge states are given numerically to confirm the topological property of square-hexagon lattice.
Review article: Spin-orbit Coupling and Topological Phases.
Spin-orbit coupling exists in materials in general. However, it entangles the spin and or-bital degrees of freedom and complicates the model. Thus, theorists usually neglect the e ects... 2 Quantum spin ices and topological phases from dipolar-octupolar doublets on the pyrochlore. The U.S. Department of Energy's Office of Scientific and Technical Information.
Effects of spin-orbit coupling on the BKT transition and the.
The band inversion can be realized by increasing the spin-orbit coupling (SOC) of Sb by more than $30%$, and this results in a TPT from a trivial AFM insulator to an AFM topological insulator or an axion insulator. The compressive uniaxial strain can also drive a similar TPT if the interlayer distance is shortened by more than $5%$. The c-axis conductivity, and second, a sizable electron-spin coupling without a strong SOC. YMn6Sn6 is a ternary kagome magnet, a family of materials known to host a variety of topological states and phenomena5-8.It crystallizes in the hexagonal space group P6/mmm (#191)5 with Mn atoms forming a kagome net in the basal plane as depicted in Fig. 1(a,b). The vortex core can be viewed approximately as the open boundary of r-dimension in the 3D space spanned by (r, k‖, φ). Energy spectrum for the half vortex (c) and full vortex (d) regime. The MZMs are obtained in the former case. Other parameters are the same as those in Fig. 18. - "Spin-orbit coupling and topological phases for ultracold atoms".
Brillouin-Wigner theory for Floquet topological phase transitions in.
During the outgoing phase in UC Berkeley, we shall consider the interplay of interaction and spin-orbit effects in topological insulators both in bulk materials and in their heterostructures. The fellow researcher has previously studied heterostructures combining superconductors and ferromagnets. Here we review the physics of the SO coupled quantum gases, focusing on the latest theoretical and experimental progresses of realizing SO couplings beyond one-dimension (1D), and the further investigation of novel topological quantum phases in such systems, including the topological insulating phases and topological superfluids.
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