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Ward identities and orbital magnetization in current density functional theory
Giovanni Vignale, Junren Shi, Di Xiao +1
We revisit the derivation of the orbital magnetization formula for periodic crystals in current density functional theory (CDFT)[1]. Our new derivation computes the linear response…
Coupling the valley degree of freedom to antiferromagnetic order
Xiao Li, Ting Cao, Qian Niu +2
Conventional electronics are based invariably on the intrinsic degrees of freedom of an electron, namely, its charge and spin. The exploration of novel electronic degrees of freedo…
MoS_2 as an ideal material for valleytronics: valley-selective circular dichroism and valley Hall effect
Ting Cao, Ji Feng, Junren Shi +2
A two-dimensional honeycomb lattice harbors a pair of inequivalent valleys in the k-space electronic structure, in the vicinities of the vertices of a hexagonal Brillouin zone, K}$…
Berry Curvature and Phonon Hall Effect
Tao Qin, Jianhui Zhou, Junren Shi
We establish the general phonon dynamics of magnetic solids by incorporating the Mead-Truhlar correction in the Born-Oppenheimer approximation. The effective magnetic-field acting…
Singular Effects of Spin-Flip Scattering on Gapped Dirac Fermions
Shengyuan A. Yang, Zhenhua Qiao, Yugui Yao +2
We investigate the effects of spin-flip scattering on the Hall transport and spectral properties of gapped Dirac fermions. We find that in the weak scattering regime, the Berry cur…
A low temperature disordered phase of alpha-Pb/Ge(111)
Jiandong Guo, Junren Shi, E. W. Plummer
A new structural phase transition has been observed at low temperatures for the one third of a monolayer (alpha phase) of Pb on Ge(111) using a variable-temperature scanning tunnel…