Physics - Spin-Orbit Coupling Comes in From the Cold.

Artiﬁcial spin-orbit coupling In 2011 and 2012 artiﬁcial spin-orbit coupling has been imposed on both bosonic3and fermionic4atomic gases. The single-particle Hamiltonian ˆh spwith both Rashba and Dresselhaus spin-orbit couplings reads ˆh sp= pˆ2 2m +v R(ˆσ 1ˆp y−σˆ 2ˆp x)+v D(ˆσ 1ˆp y+ ˆσ 2ˆp x) , (2) with ˆp2= −~2∇2, ˆp x= −i~∂ ∂x, ˆp y= −i~. Abstract: Spin-orbit coupling plays an increasingly important role in the modern condensed matter physics. For instance, it gives birth to topological insulators and topological superconductors. Quantum simulation of spin-orbit coupling using ultracold Fermi gases will offer opportunities to study these new phenomena in a more controllable setting.

PDF Resonant Fermi gas of atoms with spin-orbit coupling.

FIG. 7: Schematics of the three-component Fermi system inSec. V A. The impurity atoms interact only with the spin-up atoms in a spin-orbit coupled Fermi gas. The fractionsof spin components in both helicity branches are momentumdependent, as characterized by cos θ = − β − k and sin θ = β + k ,where β ± k is deﬁned in Sec. III. 1D spin-orbit-coupled Fermi gas were recently predicted [30,31]. However, the crucial issue raised in practical manipulations, i.e., the fate of these solitons at a finite velocity of motion, was not addressed. For concreteness, in the main text we focus on 1D spin-orbit-coupled Fermi superfluids. The results of 2D Fermi. The above two obstacles can be overcome using spin-orbit (SO) coupled degenerate Fermi gases with an in-plane Zeeman field. SO coupling is essential for many important phenomena in condensed matter physics22,23. In solid materials, SO coupling is induced by inversion symmetry breaking of the bulk structure24.

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

The topology of Fulde-Ferrell (FF) superfluids with nonzero momentum pairings have never been explored until recent findings that FF superfluids in a spin-orbit (SO) coupled Fermi gas can accommodate Majorana fermions in real space in low dimensions and Weyl fermions in momentum space in three dimension.

PDF Spin-Orbit Coupled Fermi Gases Under Adiabatic Rotation.

Pairing in an attractively interacting two-component Fermi gas in the absence of time-reversal symmetry or inversion symmetry may give rise to exotic superfluid states. Notable examples range from. Fermi Gases with Synthetic Spin-Orbit Coupling Jing Zhang, Hui Hu, Xia-Ji Liu, Han Pu We briefly review recent progress on ultracold atomic Fermi gases with different types of synthetic spin-orbit coupling, including the one-dimensional (1D) equal weight Rashba-Dresselhaus and two-dimensional (2D) Rasbha spin-orbit couplings.

PDF BCS-BEC crossover in spin-orbit-coupled two-dimensional Fermi gases.

We study the dynamics of a non-degenerate, harmonically trapped Fermi gas following a sudden ramp of the spin-orbit coupling strength. In the non-interacting limit, we solve the Boltzmann equation in the presence of spin orbit coupling analytically, and derive expressions for the dynamics of an arbitrary initial spin state. In particular we show that for a fully spin polarized initial state. Zero-temperature mean-field chemical potential of a spin-orbit-coupled Fermi gas on the BCS side (1 / k F a s = − 1) and in the unitary limit (1 / k F a s = 0), calculated following the approach in Ref.. Here, we take a spin-orbit coupling strength λ k F / E F = 1, where k F and E F are the Fermi wave vector and Fermi energy, respectively. We study the connection between the spin-heat and spin-charge response in a disordered Fermi gas with spin-orbit coupling. It is shown that the ratio between the above responses can be expressed as.

(PDF) FERMI GASES WITH SYNTHETIC SPIN–ORBIT COUPLING.

Recently, an ultracold Fermi gas has attracted much attention as a useful quantum simulator to study various many-body problems in strongly correlated Fermi systems [1-4].Using a tunable s-wave pairing interaction associated with a Feshbach resonance, we can now study the s-wave Fermi superfluid state from the weak-interacting BCS (Bardeen-Cooper-Schrieffer) regime to the strong-coupling. A system of a two-component Fermi gas with and without a Zeeman ﬁeld that breaks the population balance between the two components. A bound state (Rashba pair) emerges because of the spin-orbit interaction.... spin-orbit-coupled Fermi gases in both three dimensions (3D) [7-19] and 2D [20-23], most of them having appeared very recently.

[PDF] A long-lived spin-orbit-coupled degenerate dipolar Fermi gas.

The recent experimental realization of spin-orbit coupled Fermi gases provides a unique opportunity to study the interplay between strong interaction and SOC in a tunable, disorder-free system. We present here precision ab initio numerical results on the two-dimensional, unpolarized, uniform Fermi gas with attractive interactions and Rashba SOC. Using auxiliary-field quantum Monte Carlo and. Full PDF Package Download Full PDF Package. This Paper. A short summary of this paper. 37 Full PDFs related to this paper... Related Papers. Radio-frequency spectroscopy of a strongly interacting spin-orbit-coupled Fermi gas. By Xia-ji Liu. Production of Feshbach molecules induced by spin-orbit coupling in Fermi gases. By Long Zhang. FERMI. With + (−) standing for the upper (lower) branch. The same scheme was later applied to Fermi gases 6,7.. The ground state of a Bose gas subject to the spin-orbit coupling realized by the NIST scheme can be either the stripe, the magnetic, or the non-magnetic states depending on the spin-orbit couplings and interatomic interactions 4,5,8.Recently the finite temperature phase diagram of the.

Topological Fulde-Ferrell superfluids of a spin-orbit coupled Fermi gas.

We briefly review recent progress on ultracold atomic Fermi gases with different types of synthetic spin-orbit coupling, including the one-dimensional (1D) equal weight Rashba-Dresselhaus and.

Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas.

The spin-orbit-coupled degenerate Fermi gas provides a new platform for realizing topological superfluids and related topological excitations. However, previous studies have been mainly focused. We review our recent experimental realization and investigation of a spin-orbit (SO) coupled Bose- Einstein condensate (BEC) and quantum degenerate Fermi gas. By using two counter-propagating Raman. Spin-orbit coupled Fermi Gas Tarik Yefsah Lawrence Cheuk, Ariel Sommer, Zoran Hadzibabic, Waseem Bakr and Martin Zwierlein July 20, 2012 ENS. Why spin-orbit coupling ? A little bit of History • Last century classification of quantum states in terms of spontaneous symmetry breaking [Anderson 1997].

PDF Spin-orbit coupling in Bose-Einstein condensate and degenerate Fermi gases.

Magnetoelectric e ects in Josephson junctions I. V. Bobkova,1,2,3 A. M. Bobkov,1 and M.A. Silaev4 1Institute of Solid State Physics, Chernogolovka, Moscow reg. We describe the creation of a long-lived spin-orbit-coupled gas of quantum degenerate atoms using the most magnetic fermionic element, dysprosium. Spin-orbit-coupling arises from a synthetic gauge field created by the adiabatic following of degenerate dressed states comprised of optically coupled components of an atomic spin. Because of dysprosium's large electronic orbital angular momentum. PDF - We investigate Rashba spin-orbit coupled Fermi gases in square optical lattice by using the determinant quantum Monte Carlo (DQMC) simulations which is free of the sign-problem. We show that the Berezinskii-Kosterlitz-Thoules phase transition temperature is firstly enhanced and then suppressed by spin-orbit coupling in the strong attraction region. In the intermediate attraction region.

[PDF] Spin dynamics in a spin-orbit-coupled Fermi gas | Semantic Scholar.

Dimensional crossover in chemical potential of synthetic spin-orbit coupled Fermi systems.... 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. Download Full PDF Package. Translate PDF. Related Papers. Download PDF. Open Access;... Liu, X. & Pu, H. Anderson localization of Cooper pairs and Majorana fermions in an ultracold atomic Fermi gas with synthetic spin-orbit coupling. arXiv: 1512. Download PDF Abstract: Spin-orbit coupling plays an increasingly important role in the modern condensed matter physics. For instance, it gives birth to topological insulators and topological superconductors. Quantum simulation of spin-orbit coupling using ultracold Fermi gases will offer opportunities to

Pdf spin orbit coupled fermi gas