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Contractor renormalization group theory of the SU() chains and ladders
Peng Li, Shun-Qing Shen
Contractor renormalization group (CORE) method is applied to the SU() chain and ladders in this paper. In our designed schemes, we show that these two classes of systems can ret…
Two-dimensional gapless spin liquids in frustrated SU(N) quantum magnets
Peng Li, Shun-Qing Shen
A class of the symmetrically frustrated SU(N) models is constructed for quantum magnets based on the generators of SU(N) group. The total Hamiltonian lacks SU(N) symmtry. A mean fi…
Resonant spin Hall conductance in quantum Hall systems lacking bulk and structural inversion symmetry
Shun-Qing Shen, Yun-Juan Bao, Michael Ma +2
Following a previous work [Shen, Ma, Xie and Zhang, Phys. Rev. Lett. 92, 256603 (2004)] on the resonant spin Hall effect, we present detailed calculations of the spin Hall conducta…
Controllable quantum spin precession by Aharonov-Casher phase in conducting ring
Shun-Qing Shen, Zhi-Jian Li, Zhongshui Ma
We investigate quantum spin transport in a structure of conducting ring, embedded in textured electric field, with two leads, and obtain an exact solution for the problem. The spin…
Influences of spin accumulation on the intrinsic spin Hall effect in two dimensional electron gases with Rashba spin-orbit coupling
Xiaohua Ma, Liangbin Hu, Ruibao Tao +1
In a two dimensional electron gas with Rashba spin-orbit coupling, the external electric field may cause a spin Hall current in the direction perpendicular to the electric field. T…
Dynamics and Berry phase of two-species Bose-Einstein condensates
Z. -D. Chen, J. -Q. Liang, S. -Q. Shen +1
In terms of exact solutions of the time-dependent Schrodinger equation for an effective giant spin modeled from a coupled two-mode Bose-Einstein condensate (BEC) with adiabatic and…