Chiral Topological Phase 2D Fermi Gas With Spin Orbit Coupling

FFLO Superfluids in 2D Spin-Orbit Coupled Fermi Gases.
Chiral topological phase 2d fermi gas with spin orbit coupling.
Electronic structure studies of FeSi: A chiral topological system.
BCS-BEC crossover in 2D Fermi gases with Rashba spin-orbit coupling.
Correlated Topological Phases and Exotic Magnetism with Ultracold Fermions.
Theory of a chiral Fermi liquid: General formalism.
Collective excitations of a repulsive 2D ultracold Fermi gas.
[PDF] Detecting chiral pairing and topological... - Researchain.
Phase Diagram of Two-dimensional Polarized FermiGas WithSpin.
FERMI GASES WITH SYNTHETIC SPIN–ORBIT COUPLING.
Topological Superfluids | SpringerLink.
PhD Projects | ARC Centre of Excellence in Future Low-Energy... - FLEET.
Towards the manipulation of topological states of... - ScienceDirect.

FFLO Superfluids in 2D Spin-Orbit Coupled Fermi Gases.

(A) Spin texture on a circular Fermi contour of topological surface states (TSS). (B) Spin texture on a hexagonally warped Fermi contour.(C) Electric field E-induced generation of a pure spin current J s.(D) Magnetic field H-induced partial conversion of J s to a charge current J c, giving rise to a lower resistance.(E) In comparison with (D), a flip in H leads to a flip in J c and a higher. Unlike other examples of topological order, such as the fractional quantum Hall effect or chiral p-wave superconductors, the emergence of topologically insulating behavior is a one-particle phenomenon, related to the existence of strong spin-orbit coupling. A topologically insulating state in 2D, the quantum spin Hall insulator, was predicted. 1 Odd-Parity Superconductors Nematic, Chiral and Topological Liang Fu Nordita, Stockholm July 7, 2016. 2 Collaboration Vlad Kozii Jorn Venderbos Erez Berg. 3 Odd-Parity Superconductors: Δ k = Δ( k) p-wave superfluid He-3 T-breaking A phase: point node in 3D; full gap in 2D T-invariant B phase: full gap Topological superfluid (Candidate) Odd-Parity SCs: UPt 3 and Sr 2 RuO 4 Unconventional.

Chiral topological phase 2d fermi gas with spin orbit coupling.

We consider a Weyl-Zeeman spin-orbit coupled Fermi gas in normal phase with. Once it is rotating, the CSE... He L. & Huang X.-G. BCS-BEC crossover in 2D Fermi gases with Rashba spin-orbit coupling. Phys. Rev. Lett. 108, 145302... Satow D. & Yee H. U. Chiral magnetic effect at weak coupling with relaxation dynamics. Phys. Rev. D 90, 014027. Magnetic adatoms on the surface of a superconductor with strong spin-orbit coupling, when arranged in a 2D lattice, can yield a 2D topological chiral p-wave superconductor whose chiral Majorana edge modes can be observed in scanning tunneling microscope measurements. To shed light on the rich range of possibilities, we analyse the topological. Supervisor: Dr Mark Edmonds Probing the electronic bandstructure of Kagome metals and superconductors The Kagome lattice TmXn (T: Fe, Mn, Co and X: Sn, Ge) is a two-dimensional (2D) network of corner-sharing triangles.The unique combination of lattice symmetry, spin-orbit coupling, and unusual magnetism in this system holds great promise for future electronics and spintronics applications.

Electronic structure studies of FeSi: A chiral topological system.

Fermi gases en route to clarifying some crucial issues for the experimental observation of MFs in such systems. Our main results are the following. (i) We show that, quite unexpectedly, the SO coupling reduces both T vortex and T BKT, despite enhancing the superﬂuid order parameter. (ii) In the pseudogap phase (T>T BKT), the Fermi gas lacks.

BCS-BEC crossover in 2D Fermi gases with Rashba spin-orbit coupling.

(A) A 2D Fermi gas is initially prepared in the lowest band (LB) of a lattice, with Chern number ν LB, and it is then subjected to a circular time-periodic modulation. In the following, we demonstrate how the depletion rate that is associated with circularly driven Chern insulators can be related to the topological Chern number ν, and we.

Correlated Topological Phases and Exotic Magnetism with Ultracold Fermions.

As the phase-space for the existence of a topological superconductor is controlled by the Zeeman gap 24, these systems require a delicate balance of the parameters involved (spin-orbit coupling.

Theory of a chiral Fermi liquid: General formalism.

Motivated by the recent progress in engineering artificial non-Abelian gauge fields for ultracold fermions in optical lattices, we investigate the time-reversal-invariant Hofstadter-Hubbard model. We include an additional staggered lattice potential and an artificial Rashba-type spin-orbit coupling term available in experiment. Without interactions, the system can be either a (semi)-metal, a. 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… PDF View 1 excerpt, cites background Geometric contribution to the Goldstone mode in spin-orbit coupled Fermi superfluids M. Iskin Physics 2020 7 PDF. We examine the properties of a one-dimensional Fermi gas with attractive intrinsic (Hubbard) interactions in the presence of spin-orbit coupling and Zeeman fields. Such a system can be realized in the setting of ultracold atoms confined in a 1D optical lattice, and has been proposed to host exotic topological phases and edge modes.

Collective excitations of a repulsive 2D ultracold Fermi gas.

We present the leading gap function symmetries obtained by solving the frequency-dependent linearized Eliashberg equation for the case where spin-orbit coupling is neglected [2]. Session 100: Superconductivity in Ruthenates: 1430: Effects of spin-orbit coupling on the superconducting pairing in Sr2RuO4: Huang, Wen; Zhou, Yi; Yao, Hong. Superﬂuid phase(NSF). For the phase separation phase, the topological phase transition much more tend to take place in the smaller pairing gap component state, thus the phase separation becomes topologically nontrivial. This paper is organized as follows. In Sec.2, introduc-ing the Hamiltonian of 2D uniform polarized Fermi gas,. Meanwhile, Sb atom is relatively heavy, thus sizable spin-orbit coupling should be expected in the sample. Besides, Rashba terms usually play significant roles in 2D electron gas systems [32,33,36] and also manifest in topological insulator surface states. For a trivial parabolic band, the Fermi energy is proportional to carrier density.

[PDF] Detecting chiral pairing and topological... - Researchain.

We first show chiral coupling between the topological resonator and the quantum emitter such that the emitter emits preferably into one of the counterpropagating edge modes depending upon its spin. Coexistence of topological and nontopological Fermi-superfluid phases Abstract 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.

Phase Diagram of Two-dimensional Polarized FermiGas WithSpin.

FERMI GASES WITH SYNTHETIC SPIN–ORBIT COUPLING... FERMI GASES WITH SYNTHETIC SPIN–ORBIT COUPLING. Volume 2, 2014. Xia-ji Liu. Jing Zhang. Han Pu. Hui Hu.

FERMI GASES WITH SYNTHETIC SPIN–ORBIT COUPLING.

As the Fermi-Fermi pairing interaction is tuned, the background Fermi superfluid undergoes a topological phase transition. We show that such a transition is accompanied by a discontinuity in the second derivative of the polaron energy, regardless of the impurity-fermion interaction.... Our results suggest the possibility of using the impurity. Two-dimensional spin-orbit-coupled Fermi gases subject to s -wave pairing can be driven into a topological phase by increasing the Zeeman spin splitting beyond a critical value. In the topological phase, the system exhibits the hallmarks of chiral p -wave superfluidity, including exotic Majorana excitations.

Topological Superfluids | SpringerLink.

Man spin splitting - a prototypical system for developing topological superﬂuidity in the many-body sector. Exact solutions for two-particle bound states are found to have a triplet character that can become dominant in the regime of weak attractive s-wave interaction when the energy scale of spin-orbit coupling is comparable to a. Finally, in a 2D Fermi gas,... Note that such a triplet pairing is similar to a pairing in the Fermi gas with the Rashba spin-orbit coupling,... the spin-orbit coupling includes an in-plane recoiled momentum and hence leads to a chiral p x + ip y pairing with a topological Berry phase. On the other hand, in the current case the single. Finally, in a 2D Fermi gas,... Note that such a triplet pairing is similar to a pairing in the Fermi gas with the Rashba spin-orbit coupling,... case the spin-orbit coupling includes an in-plane recoiled momentum and hence leads to a chiral p x + ip y pairing with a topological Berry phase. On the other hand, in the current case the single.

PhD Projects | ARC Centre of Excellence in Future Low-Energy... - FLEET.

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.

Towards the manipulation of topological states of... - ScienceDirect.

2D topological materials offer opportunities that did not exist previously. To begin with, in the structures we will consider the electron gas is on the surface and is directly accessible, unlike semiconductor heterostructures, where it is buried.... many topological materials exhibit very strong spin-orbit coupling, which, under appropriate. 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 super uid. In the BCS limit of s-wave pairing, i.e., when Cooper pairs are only weakly bound, the system enters the topo. We discuss the thermodynamic signatures for the topological phase transitions into Majorana and Weyl superfluid phases in ultracold Fermi gases in two and three dimensions (2D and 3D) in the presence of Rashba spin-orbit coupling and a Zeeman field. We analyze the thermodynamic properties exhibiting the distinct nature of the topological phase transitions linked with the Majorana fermions (2D.