293 citations · 1.4k across the 49 of their papers we have counts for
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Anderson Impurity in Helical Metal
Xiao-Yong Feng, Wei-Qiang Chen, Jin-Hua Gao +2
We use a trial wave function to study the spin-1/2 Kondo effect of a helical metal on the surface of a three-dimensional topological insulator. While the impurity spin is quenched…
Tunneling through ferromagnetic barriers on the surface of a topological insulator
Jinhua Gao, Wei-Qiang Chen, Xiao-Yong Feng +2
We study the transmission through single and double ferromagnetic barriers on the surface of a topological insulator. By adjusting the gate voltage and magnetization oreintation, t…
On the Origin of the Checkerboard Pattern in Scanning Tunneling Microscopy Maps of Underdoped Cuprate Superconductors
Kai-Yu Yang, Wei-Qiang Chen, T. M. Rice +1
The checkerboard pattern in the differential conductance maps on underdoped cuprates appears when the STM is placed above the O-sites in the outermost CuO-plane. In th…
In-plane noncollinear exchange coupling mediated by helical edge states in Quantum Spin Hall system
Jinhua Gao, Weiqiang Chen, X. C. Xie +1
We study the Ruderman-Kittel-Kasuya-Yoshida (RKKY) interaction mediated by helical edge states in quantum spin hall system. The helical edge states induce an in-plane noncollinear…
-junction to probe antiphase s-wave pairing in iron pnictide superconductors
Wei-Qiang Chen, Fengjie Ma, Zhong-Yi Lu +1
Josephson junctions between a -based superconductor with antiphase s-wave pairing and a conventional s-wave superconductor are studied. The translational invariance in a plan…