78 citations · 126 across the 3 of their papers we have counts for
3 papers
cond-mat.mes-hall2009★ 11 cited
Vertical absorption edge and universal onset conductance in semi-hydrogenated graphene
Lei Chen, Zhongshui Ma, C. Zhang
We show that for graphene with any finite difference in the on-site energy between the two sub-lattices (), The optical absorption edge is determined by the . The universal c…
cond-mat.mes-hall2007★ 78 cited
Orientation dependence of the optical spectra in graphene at high frequencies
Chao Zhang, Lei Chen, Zhongshui Ma
On the basis of the Kubo formula we evaluated the optical conductivity of a graphene sheet. The full behavior of frequency as well as temperature dependence of the optical conducti…
cond-mat.mes-hall2007★ 37 cited
Enhancement of polarization in a spin-orbit coupling quantum wire with a constriction
Jun-Feng Liu, Zhi-Cheng Zhong, Lei Chen +3
We investigate the enhancement of spin polarization in a quantum wire in the presence of a constriction and a spin-orbit coupling segment. It is shown that the spin-filtering effec…