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- Centre National de la Recherche ScientifiqueFR32 papers
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4 papers · 1 filter
Pseudo-magnetic catalysis of the time-reversal symmetry breaking in graphene
Igor F. Herbut
Finite flux of the (time-reversal-symmetric) pseudo-magnetic field, which represents the effect of wrinkling of the graphene sheet for example, is shown to be a catalyst for sponta…
Single-Molecule Device Prototypes for Protein-Based Nanoelectronics: Negative Differential Resistance and Current Rectification in Oligopeptides
David M. Cardamone, George Kirczenow
We investigate electrical conduction through individual oligopeptide molecules thiol-bonded between gold nanocontacts using ab initio and semi-empirical techniques. Our theory expl…
Coulomb interaction, ripples, and the minimal conductivity of graphene
Igor F. Herbut, Vladimir Juricic, Oskar Vafek
We argue that the unscreened Coulomb interaction in graphene provides a positive, universal, and logarithmic correction to scaling of zero-temperature conductivity with frequency.…
SO(3) symmetry between Neel and ferromagnetic order parameters for graphene in a magnetic field
Igor F. Herbut
I consider the Hubbard model of graphene in an external magnetic field and in the Hartree-Fock approximation. In the continuum limit, the ground state energy at half filling become…