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8 papers · 2 filters
Energy bands in graphene: Comparison between the tight-binding model and {\it ab initio} calculations
E. Kogan, V. U. Nazarov, V. M. Silkin +1
We compare the classification of the electron bands in graphene, obtained by group theory algebra in the framework of tight-binding model (TBM), with that calculated in the density…
Enhanced compressibility due to repulsive interaction in the Harper model
Yaacov E. Kraus, Oded Zilberberg, Richard Berkovits
We study the interplay between repulsive interaction and an almost staggered on-site potential in one-dimension. Specifically, we address the Harper model for spinless fermions wit…
Entanglement entropy of low-lying excitation in localized interacting system: Signature of Fock space delocalization
Richard Berkovits
The properties of the entanglement entropy (EE) of low-lying excitations in one-dimensional disordered interacting systems are studied. The ground state EE shows a clear signature…
Topologically Universal Spectral Hierarchies of Quasiperiodic Systems
Itzhack Dana
Topological properties of energy spectra of general one-dimensional quasiperiodic systems, describing also Bloch electrons in magnetic fields, are studied for an infinity of irrati…
Ultrafast Energy Transfer Between Molecular Assemblies and Surface Plasmons in the Strong Coupling Regime
Maxim Sukharev, Tamar Seideman, Robert J. Gordon +2
The nonlinear optical dynamics of nano-materials comprised of plasmons interacting with quantum emitters is investigated by a self-consistent model based on the coupled Maxwell-Lio…
Resistance asymmetry of a two-dimensional electron gas caused by an effective spin injection
D. I. Golosov, I. Shlimak, A. Butenko +2
We have performed conductivity measurements on a Si-MOSFET sample with a slot in the upper gate, allowing for different electron densities n_1 and n_2 across the slot. Dynamic long…