Large Chern Number Topological Superfluids in Coupled Layer System
arXiv:1408.3163 · doi:10.1103/PhysRevB.91.134512
Abstract
We investigate the topological phase transition with large Chern number in a coupled layer system. The topological transitions between different topological superfluids can be realized by controlling the binding energy, interlay tunneling and layer asymmetry {\it etc}. These topological phase transitions can be characterized by energy gap closing and reopening at the critical points at zero momentum, where the Pfaffian and Chern number undergo a discontinuous change. The bulk-edge correspondence ensures that the number of edge modes exactly equals the Chern number. However all these edge modes localized at the same edge have the same chirality and propagate along the same direction. These topological phases can be detected by spin texture at or near zero momentum, which changes discontinuously across the phase transition point due to band inversion. This model can be easily generalized to multilayer system in which the Chern number equals any positive integer --- similar to that in integer quantum Hall effect --- can be realized. This work paves a new way in the realization of topological superfluids with large Chern number.
4.5 pages, 4 figures. Results in trapped potential are added; A general bulk-edge correspondence has been discussed; Typos are corrected
References in corpus (58)
- Topological insulators and superconductors
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Berry Phase Effects on Electronic Properties
- Unpaired Majorana fermions in quantum wires
- Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
- Classification of topological insulators and superconductors in three spatial dimensions
- New directions in the pursuit of Majorana fermions in solid state systems
- A spin-orbit coupled Bose-Einstein condensate
- Search for Majorana fermions in superconductors
- Observation of a Strongly-Interacting Degenerate Fermi Gas of Atoms
- Spin-orbit coupling in quantum gases
- Spin-Orbit Coupled Degenerate Fermi Gases
- Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
- Collective excitations of a degenerate gas at the BEC-BCS crossover
- Collective Dipole Oscillation of a Spin-Orbit Coupled Bose-Einstein Condensate
- Spontaneous Quantum Hall States in Chirally-stacked Few-Layer Graphene Systems
- Spin polarization of the quantum spin Hall edge states
- Observation of Zitterbewegung in a spin-orbit coupled Bose-Einstein condensate
- Nearly flat band with Chern number C=2 on the dice lattice
- BCS-BEC Crossover and Topological Phase Transition in 3D Spin-Orbit Coupled Degenerate Fermi Gases
- Precision Measurements of Collective Oscillations in the BEC-BCS Crossover
- Radiofrequency spectroscopy of a strongly interacting two-dimensional Fermi gas
- Large Chern Number Quantum Anomalous Hall Effect In Thin-film Topological Crystalline Insulators
- Degenerate Fermi Gas of Sr
- Probing anisotropic superfluidity of rashbons in atomic Fermi gases
- Seeing topological order in time-of-flight measurements
- Quantum Anomalous Hall Effect with Higher Plateaus
- Observation of a two-dimensional Fermi gas of atoms
- Topological flat band models with arbitrary Chern numbers
- Topological Classification and Stability of Fermi Surfaces
- Spin-orbit coupled Bose-Einstein condensates in a one-dimensional optical lattice
- A Raman-induced Feshbach resonance in an effectively single-component Fermi gas
- Conductance of a helical edge liquid coupled to a magnetic impurity
- Topological Fulde-Ferrel-Larkin-Ovchinnikov states in Spin-orbit Coupled Fermi Gases
- Topological Superfluids with Finite Momentum Pairing and Majorana Fermions
- Flat bands with higher Chern number in pyrochlore slabs
- Time reversal non-invariant non-Abelian topological order in non-centrosymmetric superconductors
- Chiral Rashba spin textures in ultra-cold Fermi gases
- BCS-BEC Crossover in 2D Fermi Gases with Rashba Spin-Orbit Coupling
- Stability of spin-orbit coupled Fermi gases with population imbalance
- Searching for Majorana Fermions in 2D Spin-orbit Coupled Fermi Superfluids at Finite Temperature
- Bose-Einstein Condensate in a light-induced vector potential using the 1064 optical dipole trap lasers
- Evolution from BCS to BEC superfluidity in the presence of spin-orbit coupling
- Distant-Neighbor Hopping in Graphene and Haldane Models
- Chern numbers hiding in time-of-flight images
- Double perovskite heterostructures: Magnetism, Chern bands, and Chern insulators
- BCS-BEC crossover in spin-orbit coupled two-dimensional Fermi gases
- Inhomogeneous Topological Superfluidity in One-Dimensional Spin-Orbit-Coupled Fermi Gases
- Competing superfluid orders in spin-orbit coupled fermionic cold atom optical lattices
- Quantum phase transitions of polar molecules in bilayer systems
- Majorana fermions in one-dimensional spin-orbit coupled Fermi gases
- Radio-frequency spectroscopy of a strongly interacting spin-orbit coupled Fermi gas
- Topological phase transitions in ultra-cold Fermi superfluids: the evolution from BCS to BEC under artificial spin-orbit fields
- Topological Fulde-Ferrell superfluid in spin-orbit coupled atomic Fermi gases
- Phases of a bilayer Fermi gas
- Gapless topological Fulde-Ferrell superfluidity induced by in-plane Zeeman field
- Radio-frequency spectroscopy of weakly bound molecules in spin-orbit coupled atomic Fermi gases
- Fulde-Ferrell pairing instability of a Rashba spin-orbit coupled Fermi gas
Cited by in corpus (6)
- Unveiling Signatures of Topological Phases in Open Kitaev Chains and Ladders
- Generating and detecting topological phases with higher Chern number
- Bose-Einstein condensate in Bloch bands with off-diagonal periodic potential
- Topological Fulde-Ferrell Superfluids in Triangular Lattices
- Topological superfluids in two-dimensional Fermi gas with Rashba spin-orbit coupling
- Nodal Line Topological Superfluid and Multiply Protected Majorana Fermi Arc in a Three-Dimensional Time-Reversal-Invariant Superfluid Model