Chiral Topological Phase 2D Fermi Gas With Spin Orbit Coupling

Topological Phase - an overview | ScienceDirect Topics.
Topological phase transition in the quench... - IOPscience.
PDF Search for Majorana fermions in superconductors.
Interfacial phase frustration stabilizes unconventional.
Disorder-induced topological phase transitions in two-dimensional.
Highlights of Condensed Matter Physics (DCMP) Talks @ APS 2020.
(PDF) BCS-BEC crossover in 2D Fermi gases with Rashba spin-orbit.
Spin-Orbit Coupled Degenerate Fermi Gases - Physics.
Simulating Chiral Magnetic and Separation Effects with Spin-Orbit.
[PDF] Topological Phase Separation In Trapped Ultracold.
Experimental realization of two-dimensional synthetic.
Chiral 2D p-wave superfluid from s-wave pairing in the BEC limit.
Topological phases in pseudospin-1 Fermi gases with two.

Topological Phase - an overview | ScienceDirect Topics.

Y in the uniform topological-superﬂuid phase of a 2D Fermi gas withspin-orbitcoupling k (kx i ky)andZeemansplittingh. Inpanel(a), thedashedblue (red) curves are the spin-"(spin-#) dispersions in the absence of s-wave pairing ( = 0) and spin-orbit coupling ( = 0) but with large Zeeman splitting h = 2E0. A ﬁnite couples spin-". No spin-orbit coupling is needed even when the scalar spin chirality vanishes, different from the case of the topological Hall effect and topological SHE We introduce a class of two-dimensional (2D) materials that possess coexisting ferroelectric and topologically insulating orders..

Topological phase transition in the quench... - IOPscience.

Jul 23, 2021 · The two-dimensional spin-imbalanced Fermi gas subject to s-wave pairing and spin-orbit coupling is considered a promising platform for realizing a topological chiral-p-wave superfluid. In the BCS limit of s-wave pairing, i.e., when Cooper pairs are only weakly bound, the system enters the topological phase via a second-order transition driven by increasing the Zeeman spin-splitting energy.

PDF Search for Majorana fermions in superconductors.

Phase Diagram of Two-dimensional Polarized Fermi Gas With Spin-Orbit Coupling. In this paper, we investigate the uniform polarized two-dimensional(2D) Fermi gas with SOC near a wide Fesh-bach resonance at zero As the spin-orbit coupling increasing, there is topological phase transition. Transition of changing the Fermi surface topology can be found by further cooling the system. This progress will enable us to study many interesting phenomena predicated for SO coupled atomic Fermi gases in the future [8–14]. In our experiment, a degenerate Fermi gas of 2 106 40K atoms in the lowest hyperﬁne j9=2;9=2i state is ﬁrst. Of three-dimensional (3D) ones. Such superﬂuids include 3He A phase,54 spin–orbit (SO) coupled Fermi gases,55 ,56 SO coupled Fulde–Ferrell (FF) superﬂuids57 58 and dipolar Fermi gases.59 Weyl fermions are massless chiral Dirac fermions in 3D mo-mentum space with linear energy dispersion. Such fermions are robust and can only.

Interfacial phase frustration stabilizes unconventional.

We investigate the harmonically trapped 2D fermionic systems with a effective spin-orbit coupling and intrinsic s-wave superfluidity under the local density approximation, and find that there is a critical value for Zeeman field. When the Zeeman field larger than the critical value, the topological superfluid phases emerge and coexist with the normal superfluid phase, topological phase.

Disorder-induced topological phase transitions in two-dimensional.

Topological phases in pseudospin-1 Fermi gases with two-dimensional spin-orbit coupling Junpeng Hou, Haiping Hu, and Chuanwei Zhang* Department of Physics, The University of Texas at Dallas, Richardson, Texas 75080, USA (Received 6 October 2018; revised manuscript received 13 April 2020; accepted 16 April 2020; published 8 May 2020). Normal superconductors with Rashba spin-orbit coupling have been explored as candidate systems of topological superconductors. These topological phase transitions are distinctly characterized by variations in the topological Spin-injection spectroscopy of a spin-orbit coupled Fermi gas. The two-dimensional (2D) topological insulator is a quantum spin Hall insulator, which is a close cousin of the integer quantum Hall state. Topological insulators are electronic materials that have a bulk band gap like an ordinary insulator but have protected conducting states on their edge or surface.

Highlights of Condensed Matter Physics (DCMP) Talks @ APS 2020.

(PDF) BCS-BEC crossover in 2D Fermi gases with Rashba spin-orbit.

The strength of spin-orbit coupling. Note that at every energy the Fermi surface crosses an even number of Fermi sheets; this must always be the case in an isolated 2D electron system with time-reversal symmetry. (As an exercise, the reader is invited to show that a time-reversal-breaking.

Spin-Orbit Coupled Degenerate Fermi Gases - Physics.

The recent experimental realization of spin-orbit (SO) coupling for ultracold bosons and fermions opens an exciting avenue for engineering quantum matter that Here we propose an experimental scheme for realizing a 2D Dresselhaus-type SO coupling in a square lattice for spin-1 Fermi gases.

Simulating Chiral Magnetic and Separation Effects with Spin-Orbit.

Stability of chiral spin liquid phase of the triangular lattice Hubbard model with hopping anisotropy. I will present results for two cases of experimental relevance: The normal phase of the unitary Fermi gas We show how the multilevel generalization of interactions, spin-orbit coupling, and external.

[PDF] Topological Phase Separation In Trapped Ultracold.

With the strong spin-orbit coupling of a topological insu-. lator [15]. The basic mechanism is illustrated in motion. A closed orbit produces a phase shift of π from the 360◦ rotation of the spin. The 2D electron gas of a semiconductor heterostruc-ture, such as an InAs quantum well, has a strong..

Experimental realization of two-dimensional synthetic.

. Topological thermoelectric effects in spin-orbit coupled electron and hole doped semiconductors. Topological Properties of one-dimensional 2.4 (a) Band structure of the 2DHG in the kx direction for ky = 0. (b) Energy gap at origin between lower bands. Here we have used ↵R = ↵D = 2 ⇥ 105 m/s, hy. Fermi surface topology and low-lying quasiparticle dynamics of parent Fe1+xTe/Se superconductor. "Discovery (theoretical prediction and experimental observation) of a large-gap topological-insulator class with spin-polarized single-Dirac-cone on the surface".

Chiral 2D p-wave superfluid from s-wave pairing in the BEC limit.

The quantum-spin-Hall (QSH) phase and its helical edge spins of two-dimensional (2D) topological insulators (TIs) are attracting increasing attention. The helical edge spin currents are a favorite to applications in dissipationless spintronic devices with low error rates because the spin currents. Very recently, the Rashba spin-orbit coupling in a two-dimensional (2D) repulsive Fermi gas has been investigated in [23,24], where the density of states is quite simple and analytical results can. The recent experimental realization of spin-orbit (SO) coupling for ultracold bosons and fermions opens an exciting avenue for engineering quantum matter that may be challenging to realize in solid state materials such as SO coupled spin-1 fermions. While one-dimensional SO coupling for spin-1 bosons has been experimentally realized, the generation of two-dimensional (2D) SO coupling and its.

Topological phases in pseudospin-1 Fermi gases with two.

Topological phase transition. Bulk-edge correspondence. Chiral edges states in the QHE. II) The anomalous quantum Hall effect. or the 2D Chern insulator. • Other spin‐orbit couplings are possible (e.g., Rashba), which introduce off‐ diagonal terms and break spin conservation (no notion of spin up.