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Anomalous Hall response of topological insulators
Dimitrie Culcer, S. Das Sarma
The anomalous Hall effect due to the surface conduction band of 3D topological insulators with an out-of-plane magnetization is \textit{always} dominated by an intrinsic topologica…
Interface roughness, valley-orbit coupling and valley manipulation in quantum dots
Dimitrie Culcer, Xuedong Hu, S. Das Sarma
We present a systematic study of interface roughness and its effect on coherent dynamical processes in quantum dots. The potential due to a sharp, flat interface lifts the degenera…
Two-dimensional surface charge transport in topological insulators
Dimitrie Culcer, E. H. Hwang, Tudor D. Stanescu +1
We construct a theory of charge transport by the surface states of topological insulators in three dimensions. The focus is on the experimentally relevant case when the electron do…
Quantum dot spin qubits in Silicon: Multivalley physics
Dimitrie Culcer, Lukasz Cywinski, Qiuzi Li +2
Research on Si quantum dot spin qubits is motivated by the long spin coherence times measured in Si, yet the orbital spectrum of Si dots is increased as a result of the valley degr…