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7 papers · 2 filters
Odd integer quantum Hall effect in graphene
Bitan Roy
A possible realization of Hall conductivity, quantized at odd integer factors of for graphene's honeycomb lattice is proposed. I argue that, in the presence of \emph{unifor…
Spectrum of the Dirac Hamiltonian with the mass-hedgehog in arbitrary dimension
Igor F. Herbut, Chi-Ken Lu
It is shown that the square of the Dirac Hamiltonian with the isotropic mass-hedgehog potential in d dimensions is the number operator of fictitious bosons and fermions over d quan…
Conductivity of interacting massless Dirac particles in graphene: Collisionless regime
Vladimir Juricic, Oskar Vafek, Igor F. Herbut
We provide detailed calculation of the a.c. conductivity in the case of 1/r-Coulomb interacting massless Dirac particles in graphene in the collisionless limit when ω>> T. The anal…
Dirac point resonances due to atoms and molecules adsorbed on graphene and transport gaps and conductance quantization in graphene nanoribbons with covalently bonded adsorbates
S. Ihnatsenka, G. Kirczenow
We present a tight binding theory of the Dirac point resonances due to adsorbed atoms and molecules on an infinite 2D graphene sheet based on the standard tight binding model of th…
Antilinear spectral symmetry and the vortex zero-modes in topological insulators and graphene
Igor F. Herbut, Chi-Ken Lu
We construct the general extension of the four-dimensional Jackiw-Rossi-Dirac Hamiltonian that preserves the antilinear reflection symmetry between the positive and negative energy…
Quantum Hall Charge Sensor for Single-Donor Nuclear Spin Detection in Silicon
D. Sleiter, N. Y. Kim, K. Nozawa +3
We propose a novel optical and electrical hybrid scheme for the measurement of nuclear spin qubits in silicon. By combining the environmental insensitivity of the integer quantum H…