193 citations · 894 across the 43 of their papers we have counts for
5 papers · 1 filter
X-ray edge problem of graphene
S. -R. Eric Yang, Hyun C. Lee
The X-ray edge problem of graphene with the Dirac fermion spectrum is studied. At half-filling the linear density of states suppresses the singular response of the Fermi liquid, wh…
On the character of states near the Fermi level in (Ga,Mn)As: impurity to valence band crossover
T. Jungwirth, Jairo Sinova, A. H. MacDonald +15
We discuss the character of states near the Fermi level in Mn doped GaAs, as revealed by a survey of dc transport and optical studies over a wide range of Mn concentrations. A ther…
Polarization dependence of emission spectra of multiexcitons in self-assembled quantum dots
N. Y. Hwang, S. -R. Eric Yang
We have investigated the polarization dependence of the emission spectra of p-shell multiexcitons of a quantum dot when the single particle level spacing is larger than the charact…
Pumping in quantum dots and non-Abelian matrix Berry phases
N. Y. Hwang, S. C. Kim, P. S. Park +1
We have investigated pumping in quantum dots from the perspective of non-Abelian (matrix) Berry phases by solving the time dependent Schr{ö}dinger equation exactly for adiabatic ch…
Control of many electron states in semiconductor quantum dots by non-Abelian vector potentials
S. -R. Eric Yang
Adiabatic time evolution of degenerate eigenstates of a quantum system provides a means for controlling electronic states since mixing between degenerate levels generates a matrix…