234 citations · 5.3k across the 102 of their papers we have counts for
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Polarizability and Screening in Chiral Multilayer Graphene
Hongki Min, E. H. Hwang, S. Das Sarma
We calculate the static polarizability of multilayer graphene and study the effect of stacking arrangement, carrier density, and onsite energy difference on graphene screening prop…
Chirality-dependent phonon-limited resistivity in multiple layers of graphene
Hongki Min, E. H. Hwang, S. Das Sarma
We develop a theory for the temperature and density dependence of phonon-limited resistivity in bilayer and multilayer graphene, and compare with the corresponding monolayer…
Dynamic Screening and Low Energy Collective Modes in Bilayer Graphene
Rajdeep Sensarma, E. H. Hwang, S. Das Sarma
We theoretically study the dynamic screening properties of bilayer graphene within the random phase approximation assuming quadratic band dispersion and zero gap for the single-par…
Screening, Kohn anomaly, Friedel oscillation, and RKKY interaction in bilayer graphene
E. H. Hwang, S. Das Sarma
We calculate the screening function in bilayer graphene (BLG) both in the intrinsic (undoped) and the extrinsic (doped) regime within random phase approximation, comparing our resu…
Electron-Electron Interactions in Graphene
S. Das Sarma, Ben Yu-Kuang Hu, E. H. Hwang +1
We discuss the validity (or not) of the ring-diagram approximation (i.e. RPA) in the calculation of graphene self-energy in the weak-coupling () limit, showing that RPA…
Transport properties of two-dimensional electron systems on silicon (111) surfaces
E. H. Hwang, S. Das Sarma
We theoretically study transport properties of a two-dimensional electron system on a hydrogen-passivated Si(111) surface in the field-effect-transistor (FET) configuration. We cal…
Transport properties of diluted magnetic semiconductors: Dynamical mean field theory and Boltzmann theory
E. H. Hwang, S. Das Sarma
The transport properties of diluted magnetic semiconductors (DMS) are calculated using dynamical mean field theory (DMFT) and Boltzmann transport theory. Within DMFT we study the d…
Two Dimensional Diluted Magnetic Semiconductor Systems
D. J. Priour, E. H. Hwang, S. Das Sarma
We develop a theory for two-dimensional diluted magnetic semiconductor systems (e.g. layers) where the itinerant carriers mediating th…
Enhancing in ferromagnetic semiconductors
S. Das Sarma, E. H. Hwang, D. J. Priour
We theoretically investigate disorder effects on the ferromagnetic transition ('Curie') temperature in dilute IIIMnV magnetic semiconductors (e.g. GaMn$_x…
Optical Conductivity of Ferromagnetic Semiconductors
E. H. Hwang, A. J. Millis, S. Das Sarma
The dynamical mean field method is used to calculate the frequency and temperature dependent conductivity of dilute magnetic semiconductors. Characteristic qualitative features are…