150 citations · 1.6k across the 76 of their papers we have counts for
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Critical behavior of the energy gap and its relation with the Berry phase close to the excited state quantum phase transition in the Lipkin model
Zi-Gang Yuan, Ping Zhang, Shu-Shen Li
In our previous work [Phys. Rev. A \textbf{85}, 044102 (2012)], we have studied the Berry phase of the ground state and exited states in the Lipkin model. In this paper, using Hell…
Decoherence of a quantum system coupled to an XY spin chain: Role of the initial state of the spin chain
Zi-Gang Yuan, Ping Zhang, Shu-Shen Li
We study the decoherence of a coupled quantum system consisting of a central spin and its correlated environment described by a general spin-chain model. We make it clear that…
Uncovering many-body correlations in nanoscale nuclear spin baths by central spin decoherence
Wen-Long Ma, Gary Wolfowicz, Nan Zhao +3
Many-body correlations can yield key insights into the nature of interacting systems; however, detecting them is often very challenging in many-particle physics, especially in nano…
The Coexistence and Decoupling of Bulk and Edge States in Disordered Two-dimensional Topological Insulators
Yan-Yang Zhang, Man Shen, Xing-Tao An +4
We investigate the scattering and localization properties of edge and bulk states in a disordered two-dimensional topological insulator when they coexist at the same fermi energy.…
Valley polarization in graphene-silicene-graphene heterojunction
Man Shen, Yan-Yang Zhang, Xing-Tao An +2
Considering the difference of energy bands in graphene and silicene, we put forward a new model of the graphene-silicene-graphene (GSG) heterojunction. In the GSG, we study the val…