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Inelastic carrier lifetime in graphene
E. H. Hwang, Ben Yu-Kuang Hu, S. Das Sarma
We consider hot carrier inelastic scattering due to electron--electron interactions in graphene, as functions of carrier energy and density. We calculate the imaginary part of the…
Edge Transport in 2D Cold Atom Optical Lattices
V. W. Scarola, S. Das Sarma
We theoretically study the observable response of edge currents in two dimensional cold atom optical lattices. As an example we use Gutzwiller mean-field theory to relate persisten…
External field control of donor electron exchange at the Si/SiO2 interface
M. J. Calderon, Belita Koiller, S. Das Sarma
We analyze several important issues for the single- and two-qubit operations in Si quantum computer architectures involving P donors close to a SiO2 interface. For a single donor,…
Probing -Spin Correlations in Optical Lattices
Chuanwei Zhang, V. W. Scarola, S. Das Sarma
We propose a technique to measure multi-spin correlation functions of arbitrary range as determined by the ground states of spinful cold atoms in optical lattices. We show that an…
Single electron spin and its coherence in Si quantum computer architecture
M. J. Calderon, Belita Koiller, S. Das Sarma
The possibility of performing single spin measurements in Si-based quantum computers through electric field control of electrons bound to double donors near a barrier interface is…
Transport in chemically doped graphene in the presence of adsorbed molecules
E. H. Hwang, S. Adam, S. Das Sarma
Motivated by a recent experiment reporting on the possible application of graphene as sensors, we calculate transport properties of 2D graphene monolayers in the presence of adsorb…