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Quintet pairing and non-Abelian vortex string in spin-3/2 cold atomic systems
Congjun Wu, Jiangping Hu, Shou-Cheng Zhang
We study the s-wave quintet Cooper pairing phase () in spin-3/2 cold atomic systems and identify various novel features which do not appear in the spin-1/2 counterpart.…
The Helical Liquid and the Edge of Quantum Spin Hall Systems
Congjun Wu, B. Andrei Bernevig, Shou-Cheng Zhang
The edge states of the recently proposed quantum spin Hall systems constitute a new symmetry class of one-dimensional liquids dubbed the ``helical liquid'', where the spin orientat…
Exact spontaneous plaquette ground states for high-spin ladder models
Shu Chen, Congjun Wu, Shou-Cheng Zhang +1
We study the exchange physics in high spin Mott insulating systems with which is realizable in ultracold atomic systems. The high symmetry of SO(5) or SU(4) therein renders…
Spin-orbit coupling induced magnetism in the -density wave phase of LaBaCuO superconductors
Congjun Wu, Jan Zaanen, Shou-Cheng Zhang
We study the effects of spin-orbit coupling in the -density wave (DDW) phase. In the low-temperature orthorhombic phase of LaBaCuO, we find that spin-orbit coupl…
Topological quantization of the spin Hall effect in two-dimensional paramagnetic semiconductors
Xiao-Liang Qi, Yong-Shi Wu, Shou-Cheng Zhang
We propose models of two dimensional paramagnetic semiconductors where the intrinsic spin Hall effect is exactly quantized in integer units of a topological charge. The model descr…
Quantum Spin Hall Effect
B. Andrei Bernevig, Shou-Cheng Zhang
The quantum Hall liquid is a novel state of matter with profound emergent properties such as fractional charge and statistics. Existence of the quantum Hall effect requires breakin…
Orbitronics: the Intrinsic Orbital Hall Effect in p-Doped Silicon
B. Andrei Bernevig, Taylor L. Hughes, Shou-Cheng Zhang
The spin Hall effect depends crucially on the intrinsic spin-orbit coupling of the energy band. Because of the smaller spin-orbit coupling in silicon, the spin Hall effect is expec…