Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Novikov, D. S."'
Autor:
Novikov, D. S.
Publikováno v:
Phys. Rev. B 79, 235304 (2009)
We consider transport of dilute two-dimensional electrons, with temperature between Fermi and Debye temperatures. In this regime, electrons form a nondegenerate plasma with mobility limited by potential disorder. Different kinds of impurities contrib
Externí odkaz:
http://arxiv.org/abs/0810.4198
Autor:
Novikov, D. S., Kiselev, V. G.
Publikováno v:
J. Magn. Reson. 195, 33 (2008)
We consider the NMR signal from a permeable medium with a heterogeneous Larmor frequency component that varies on a scale comparable to the spin-carrier diffusion length. We focus on the mesoscopic part of the transverse relaxation, that occurs due t
Externí odkaz:
http://arxiv.org/abs/0801.4765
Publikováno v:
Phys. Rev. B 77, 075420 (2008)
We propose the theory of transport in a gate-tunable graphene p-n junction, in which the gradient of the carrier density is controlled by the gate voltage. Depending on this gradient and on the density of charged impurities, the junction resistance i
Externí odkaz:
http://arxiv.org/abs/0710.2150
Publikováno v:
Phys. Rev. B 77, 035128 (2008)
We consider the two-terminal conductance of a one-dimensional Mott insulator undergoing the commensurate-incommensurate quantum phase transition to a conducting state. We treat the leads as Luttinger liquids. At a specific value of compressibility of
Externí odkaz:
http://arxiv.org/abs/0708.0545
Autor:
Novikov, D. S.
Publikováno v:
Appl. Phys. Lett. 91, 102102 (2007)
A method is suggested to separately determine the surface density of positively and negatively charged impurities that limit the mobility in a graphene monolayer. The method is based on the exact result for the transport cross-section, according to w
Externí odkaz:
http://arxiv.org/abs/0707.1106
Publikováno v:
Phys. Rev. B 76, 233402 (2007)
Screening of a large external charge in graphene is studied. The charge is assumed to be displaced away or smeared over a finite region of the graphene plane. The initial decay of the screened potential with distance is shown to follow the 3/2 power.
Externí odkaz:
http://arxiv.org/abs/0707.1023
Autor:
Novikov, D. S.
Publikováno v:
Phys. Rev. B 76, 245435 (2007)
Electron properties of graphene are described in terms of Dirac fermions. Here we thoroughly outline the elastic scattering theory for the two-dimensional massive Dirac fermions in the presence of an axially symmetric potential. While the massless li
Externí odkaz:
http://arxiv.org/abs/0706.1391
Autor:
Novikov, D. S.
Publikováno v:
Phys. Rev. Lett. 99, 056802 (2007)
It is shown that a graphene ribbon, a ballistic strip of carbon monolayer, may serve as a quantum wire whose electronic properties can be continuously and reversibly controlled by an externally applied transverse voltage. The electron bands of armcha
Externí odkaz:
http://arxiv.org/abs/0704.1052
The power-law increase of the conductivity with temperature in the nominally insulating regime, recently reported for the dilute two-dimensional holes [cond-mat/0603053], is found to systematically vary with the carrier density. Based on the results
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610320
Autor:
Novikov, D. S.
Shear viscosity of a two-dimensional Fermi liquid is found to be a nonanalytic function of temperature. In contrast to the quasiparticle lifetime that is determined by the forward-scattering processes, the main contribution to the viscosity arises fr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603184