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

Abstract

The coupling of the spin of electrons to their motional state lies at the heart of recently discovered topological phases of matter. Here we create and detect spin-orbit coupling in an atomic Fermi gas, a highly controllable form of quantum degenerate matter. We reveal the spin-orbit gap via spin-injection spectroscopy, which characterizes the energy-momentum dispersion and spin composition of the quantum states. For energies within the spin-orbit gap, the system acts as a spin diode. To fully inhibit transport, we open an additional spin gap, thereby creating a spin-orbit coupled lattice whose spinful band structure we probe. In the presence of s-wave interactions, such systems should display induced p-wave pairing, topological superfluidity, and Majorana edge states.

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Cited by in corpus (34)

• Bright solitons in spin-orbit-coupled Bose-Einstein condensates
• Anisotropic dynamics of a spin-orbit coupled Bose-Einstein condensate
• Manipulating Topological Edge Spins in One-Dimensional Optical Lattice
• Interferometric approach to measuring band topology in 2D optical lattices
• Unconventional superfluid in a two-dimensional Fermi gas with anisotropic spin-orbit coupling and Zeeman fields
• Bose-Einstein Condensates in Spin-Orbit Coupled Optical Lattices: Flat Bands and Superfluidity
• Time-Reversal-Invariant Hofstadter-Hubbard Model with Ultracold Fermions
• Direct measurement of topological invariants in optical lattices
• Sum rules, dipole oscillation and spin polarizability of a spin-orbit coupled quantum gas
• SU(3) Spin-Orbit Coupling in Systems of Ultracold Atoms
• Finite-Momentum Dimer Bound State in Spin-Orbit Coupled Fermi Gas
• Majorana fermions in one-dimensional spin-orbit coupled Fermi gases
• Universal impurity-induced bound state in topological superfluids
• Modified Bethe-Peierls boundary condition for ultracold atoms with Spin-Orbit coupling
• Molecule and polaron in a highly polarized two-dimensional Fermi gas with spin-orbit coupling
• Ground State Properties of Spin-Orbit Coupled Bose Gases for Arbitrary Interactions
• Stability of Excited Dressed States with Spin-Orbit Coupling
• Tuning Rashba and Dresselhaus spin-orbit couplings: Effects on singlet and triplet condensation with Fermi atoms
• Magnetic field dependence of Raman coupling in Alkali atoms
• Identifying topological edge states in 2D optical lattices using light scattering
• Short range asymptotic behavior of the wave-functions of interacting spin-half fermionic atoms with spin-orbit coupling: a model study
• Flux lattices reformulated
• Impurity probe of topological superfluid in one-dimensional spin-orbit coupled atomic Fermi gases
• Spin injection from a half-metal at finite temperatures
• Manipulating Majorana fermions in one-dimensional spin-orbit coupled atomic Fermi gases
• Radio-frequency spectroscopy of weakly bound molecules in spin-orbit coupled atomic Fermi gases
• Unusual Zeeman-field effects in two-dimensional spin-orbit-coupled Fermi superfluids
• Topological transport in a spin-orbit coupled bosonic Mott insulator
• Momentum-resolved radio-frequency spectroscopy of a spin-orbit coupled atomic Fermi gas near a Feshbach resonance in harmonic traps
• Particle number fractionalization of a one-dimensional atomic Fermi gas with synthetic spin-orbit coupling
• Coupled Ferromagnetic and Nematic Ordering of Fermions in an Optical Flux Lattice
• Validity of single-channel model for a spin-orbit coupled atomic Fermi gas near Feshbach resonances
• Momentum-resolved radio-frequency spectroscopy of ultracold atomic Fermi gases in a spin-orbit coupled lattice
• Significance of dressed molecules in a quasi-two-dimensional polarized Fermi gas