5 papers · 1 filter
Non-Hermitian dynamics of Cooper pair splitter
E. S. Ma, Z. Song
We propose a non-Hermitian model for Cooper pair splitters, in which the process of electron tunneling into electrodes is characterized by non-Hermitian terms. We find that across…
Topological charge pumping in dimerized Kitaev chains
E. S. Ma, Z. Song
We investigated the topological pumping charge of a dimerized Kitaev chain with spatially modulated chemical potential, which hosts nodal loops in parameter space and violates part…
Real-space decomposition of -wave Kitaev chain
D. K. He, E. S. Ma, Z. Song
We propose an extended Bogoliubov transformation in real space for spinless fermions, based on which a class of Kitaev chains of length with zero chemical potential can be map…
Topological bulk and edge correlations of BCS condensate in a two-dimensional singlet-triplet spin pairing model
E. S. Ma, K. L. Zhang, Z. Song
The condensate of the Bardeen-Cooper-Schrieffer (BCS) pair in the ground state, which may contain information on both topology and spin pairing, promises the superconductivity of t…
Superconducting state generated dynamically from distant pair source and drain
E. S. Ma, Z. Song
It has been well established that the origin of p-wave superconductivity is the balance between pair creation and annihilation, described by the spin-less fermionic Kitaev model. I…