37 citations · 50 across the 10 of their papers we have counts for
10 papers
Logarithmically Correlated Landscapes and Localization in Non-Hermitian Quasicrystals
Xianqi Tong, Qifeng Ding, Xiaosen Yang
We study a one-dimensional Hatano-Nelson ring whose nonreciprocal hopping is quasiperiodically modulated through zero. A gauge transformation maps every eigenstate onto a single sp…
Analytical mobility edge in nonreciprocal quasiperiodic lattices with next-nearest-neighbor hopping
Wenmin Wang, Xiaosen Yang, Xianqi Tong
We investigate localization transitions and spectral topology in a one-dimensional non-Hermitian generalization of the Aubry-André model in which both the nearest-neighbor and the…
Interplay of Quasiperiodic Criticality and the Non-Hermitian Skin Effect
Zhangyuan Chen, Xianqi Tong, Xiaosen Yang
Quasiperiodic lattices can host critical eigenstates, whereas nonreciprocal hopping in non-Hermitian lattices can induce non-Hermitian skin effect. In this work, we investigate loc…
Non-Hermitian Mosaic Maryland model
Zhenning Wang, Ni Lu, Dan Liu +2
We introduce the non-Hermitian mosaic Maryland model, where a discrete modulation period and a non-Hermitian phase are incorporated into the potential, rendering the originally exa…
Quasiperiodic Skin Criticality in an Exactly Solvable Non-Hermitian Quasicrystal
Zhangyuan Chen, Muhammad Idrees, Ying Yang +2
Critical states in quasiperiodic systems defy the conventional dichotomy between extended and localized states. In this work, we demonstrate that non-Hermiticity fundamentally resh…
Impact of Nonreciprocal Hopping on Localization in Non-Hermitian Quasiperiodic Systems
Xianqi Tong, Yiling Zhang, Bin Li +1
We study the non-Hermitian Aubry-André-Harper model, incorporating complex phase modulation, unmodulated and modulated nonreciprocal hopping. Using Avila's global theory, we derive…
First-order Quantum Phase Transitions and Localization in the 2D Haldane Model with Non-Hermitian Quasicrystal Boundaries
Xianqi Tong, Su-Peng Kou
The non-Hermitian extension of quasicrystals (QC) are highly tunable system for exploring novel material phases. While extended-localized phase transitions have been observed in on…
Symmetry classes of dissipative topological insulators with edge dark state
Fei Yang, Zheng Wei, Xianqi Tong +2
We classify the dissipative topological insulators (TIs) with edge dark states (EDS) by using the 38-fold way of non-Hermitian systems in this paper. The dissipative dynamics of th…
Adiabatic-impulse approximation in non-Hermitian Landau-Zener Model
Xianqi Tong, Gao Xianlong, Su-peng Kou
We investigate the transition from PT-symmetry to PT-symmetry breaking and vice versa in the non-Hermitian Landau-Zener (LZ) models. The energy is generally complex, so the relaxat…
Dynamics of a quantum phase transition in the Aubry-André-Harper model with -wave superconductivity
Xianqi Tong, Yeming Meng, Xunda Jiang +3
We investigate the nonequilibrium dynamics of the one-dimension Aubry-André-Harper model with -wave superconductivity by changing the potential strength with slow and sudden que…