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Exact Solution of Quadratic Fermionic Hamiltonians for Arbitrary Boundary Conditions
Abhijeet Alase, Emilio Cobanera, Gerardo Ortiz +1
We present a procedure for exactly diagonalizing finite-range quadratic fermionic Hamiltonians with arbitrary boundary conditions in one of D dimensions, and periodic in the remain…
Dynamical generation of Floquet Majorana flat bands in s-wave superconductors
Amrit Poudel, Gerardo Ortiz, Lorenza Viola
We present quantum control techniques to engineer flat bands of symmetry-protected Majorana edge modes in s-wave superconductors. Specifically, we show how periodic control may be…
Majorana Flat Bands in s-Wave Gapless Topological Superconductors
Shusa Deng, Gerardo Ortiz, Amrit Poudel +1
We demonstrate how the non-trivial interplay between spin-orbit coupling and nodeless -wave superconductivity can drive a fully gapped two-band topological insulator into a time…
Multiband s-wave topological superconductors: role of dimensionality and magnetic field response
Shusa Deng, Gerardo Ortiz, Lorenza Viola
We further investigate a class of time-reversal-invariant two-band s-wave topological superconductors introduced in Phys. Rev. Lett. 108, 036803 (2012). We show how, in the presenc…
Majorana modes in time-reversal invariant s-wave topological superconductors
Shusa Deng, Lorenza Viola, Gerardo Ortiz
We present a time-reversal invariant s-wave superconductor supporting Majorana edge modes. The multi-band character of the model together with spin-orbit coupling are key to realiz…