250 citations · 2.5k across the 105 of their papers we have counts for
6 papers · 2 filters
Correlation Length, Universality Classes, and Scaling Laws Associated with Topological Phase Transitions
Wei Chen, Markus Legner, Andreas Rüegg +1
The correlation functions related to topological phase transitions in inversion-symmetric lattice models described by Dirac Hamiltonians are discussed. In one dimension…
Effect of Quantum Tunneling on Spin Hall Magnetoresistance
Seulgi Ok, Wei Chen, Manfred Sigrist +1
We present a formalism that simultaneously incorporates the effect of quantum tunneling and spin diffusion on spin Hall magnetoresistance observed in normal metal/ferromagnetic ins…
Robust AC Quantum Spin Hall Effect without Participation of Edge States
W. Y. Deng, H. Geng, Wei Luo +4
The quantum spin Hall (QSH) effect in the DC regime, which has been intensively researched, relies on the existence of symmetry-protected edge states. Here, we demonstrate that a Q…
Scaling Theory of Topological Invariants
Wei Chen, Manfred Sigrist, Andreas P. Schnyder
For inversion-symmetric topological insulators and superconductors characterized by topological invariants, two scaling schemes are proposed to judge topological…
Spin Hall Effect Induced Spin Transfer Through an Insulator
Wei Chen, Manfred Sigrist, Dirk Manske
When charge current passes through a normal metal that exhibits spin Hall effect, spin accumulates at the edge of the sample in the transverse direction. We predict that this spin…
Spin Berry Phase in a Quantum-Spin-Hall-Insulator-Based Interferometer: Evidence for the Helical Spin Texture of the Edge States
Wei Chen, Wei-Yin Deng, Jing-Min Hou +3
Quantum spin Hall insulator is characterized by the helical edge states, with the spin polarization of electron being locked to its direction of motion. Although the edge-state con…