137 citations · 317 across the 12 of their papers we have counts for
12 papers
Emerging topological characterization in non-equilibrium states of quenched Kitaev chains
Y. B. Shi, X. Z. Zhang, Z. Song
Topological characteristics of quantum systems are typically determined by the closing of a gap, while the dynamical quantum phase transition (DQPT) during quantum real-time evolut…
Generalized phantom helix states in quantum spin graphs
C. H. Zhang, Y. B. Shi, Z. Song
In general, the summation of a set of sub-Hamiltonians cannot share a common eigenstate of each one, only if it is an unentangled product state, such as a phantom helix state in qu…
Robust unidirectional phantom helix states in the XXZ Heisenberg model with Dzyaloshinskii-Moriya interaction
Y. B. Shi, Z. Song
The phantom helix states are a special set of degenerate eigenstates of the XXZ Heisenberg model, which lie in the energy levels around zero energy and are bidirectionally equal. I…
Fixed lines in a non-Hermitian Kitaev chain with spatially balanced pairing processes
Y. B. Shi, Z. Song
Exact solutions for non-Hermitian quantum many-body systems are rare but may provide valuable insights into the interplay between Hermitian and non-Hermitian components. We report…
Topological phase in Kitaev chain with spatially separated pairing processes
Y. B. Shi, Z. Song
The dynamic balance between pair creation and annihilation processes takes a crucial role to the topological superconductivity in Kitaev model. Here we study the effect of spatial…
Dynamic generation of nonequilibrium superconducting states in Kitaev chain
Y. B. Shi, K. L. Zhang, Z. Song
Non-equilibrium state can exhibit the same macroscopic properties, such as conductivity or superconductivity, as a static state when they share the identical average of an observab…
Modeling quantum cascade lasers: Coupled electron and phonon transport far from equilibrium and across disparate spatial scales
Y. B. Shi, S. Mei, O. Jonasson +1
Quantum cascade lasers (QCLs) are high-power coherent light sources in the midinfrared and terahertz parts of the electromagnetic spectrum. They are devices in which the electronic…
Nonequilibrium phonon effects in midinfrared quantum cascade lasers
Y. B. Shi, I. Knezevic
We investigate the effects of nonequilibrium phonon dynamics on the operation of a GaAs-based midinfrared quantum cascade laser over a range of temperatures (77--300 K) via a coupl…
Effects of Ru Substitution on Dimensionality and Electron Correlations in Ba(Fe_{1-x}Ru_x)_2As_2
N. Xu, T. Qian, P. Richard +12
We report a systematic angle-resolved photoemission spectroscopy study on Ba(FeRu)As for a wide range of Ru concentrations (0.15 \emph{x} 0.74). W…
Isotropic superconducting gaps with enhanced pairing on electron Fermi surfaces in FeTe0.55Se0.45
H. Miao, P. Richard, Y. Tanaka +17
The momentum distribution of the energy gap opening at the Fermi level of superconductors is a direct fingerprint of the pairing mechanism. While the phase diagram of the iron-base…
Fermiology of Sr4V2O6Fe2As2: Quasi-Nested Fe vs Mott-Insulating V Orbitals
T. Qian, N. Xu, Y. -B. Shi +14
We have performed an angle-resolved photoemission spectroscopy study of a new iron-based superconductor Sr4V2O6Fe2As2. While V 3d orbitals are found to be in a Mott insulator state…
Unconventional superconducting gap in NaFeCoAs observed by angle-resolved photoemission spectroscopy
Z. -H. Liu, P. Richard, K. Nakayama +16
We have performed high resolution angle-resolved photoemission measurements on superconducting electron-doped NaFeCoAs (18 K). We observed a hole-like…