Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Shevtsov, Oleksii"'
Publikováno v:
Phys. Rev. B 95, 165420 (2017)
We study time-dependent electron transport and quantum noise in a ballistic graphene field effect transistor driven by an ac gate potential. The non-linear response to the ac signal is computed through Floquet theory for scattering states and Landaue
Externí odkaz:
http://arxiv.org/abs/1612.08909
Autor:
Shevtsov, Oleksii, Sauls, J. A.
When an electron is forced into liquid $^3$He it forms an "electron bubble", a heavy ion with radius, $R\simeq 1.5$ nm, and mass, $M\simeq 100\,m_3$, where $m_3$ is the mass of a $^3$He atom. These negative ions have proven to be powerful local probe
Externí odkaz:
http://arxiv.org/abs/1608.01644
Publikováno v:
Phys. Rev. B 94, 125445 (2016)
We present results for time-dependent electron transport in a ballistic graphene field-effect transistor with an ac-driven gate. Nonlinear response to the ac drive is derived utilizing Floquet theory for scattering states in combination with Landauer
Externí odkaz:
http://arxiv.org/abs/1606.09036
Autor:
Shevtsov, Oleksii, Sauls, J. A.
Publikováno v:
Phys. Rev. B 94, 064511 (2016)
Electrons embedded in liquid $^3$He form mesoscopic bubbles with radii large compared to the interatomic distance between $^3$He atoms, voids of $N_{bubble}\approx 200$ $^3$He atoms, generating a negative ion with a large effective mass that scatters
Externí odkaz:
http://arxiv.org/abs/1606.06240
Publikováno v:
Phys. Rev. B 94, 155424 (2016)
Conventional superconductors disordered by magnetic impurities demonstrate physical properties drastically different from their pristine counterparts. In our previous work [Phys. Rev. B 92, 245430 (2015)] we explored spectral and thermodynamic proper
Externí odkaz:
http://arxiv.org/abs/1605.02657
Publikováno v:
Phys. Rev. B 92, 245430 (2015)
We present a comprehensive theoretical study of thermodynamic properties of superconductors with a dilute concentration of magnetic impurities, with focus on how the properties of the superconducting host change if the magnetic moments of the impurit
Externí odkaz:
http://arxiv.org/abs/1509.04476
Autor:
Shevtsov, Oleksii, Löfwander, Tomas
Publikováno v:
Phys. Rev. B 90, 085432 (2014)
We consider a heterostructure consisting of a normal metal and a superconductor separated by a spin-active interface. At finite-bias voltages, spin-filtering and spin-mixing effects at the interface allow for an induced magnetization (spin imbalance)
Externí odkaz:
http://arxiv.org/abs/1404.6172
Publikováno v:
JCEL 12 (2), 175-187 (2013)
We investigate the effect of spin-orbit coupling on the band structure of graphene-based two-dimensional Dirac fermion gases in the quantum Hall regime. Taking monolayer graphene as our first candidate, we show that a quantum phase transition between
Externí odkaz:
http://arxiv.org/abs/1211.6628
Autor:
Shevtsov, Oleksii, Waintal, Xavier
Publikováno v:
Phys. Rev. B 87, 085304 (2013)
Building on the many existing algorithms for calculating the DC transport properties of quantum tight-binding models, we develop a systematic approach that expresses finite frequency observables in terms of the stationary Green's function of the syst
Externí odkaz:
http://arxiv.org/abs/1211.2768
Autor:
Shevtsov, Oleksii, Carmier, Pierre, Petitjean, Cyril, Groth, Christoph, Carpentier, David, Waintal, Xavier
Publikováno v:
Phys. Rev. X 2, 031004 (2012)
Quantum Hall (QH) and quantum spin Hall (QSH) phases have very different edge states and, when going from one phase to the other, the direction of one edge state must be reversed. We study this phenomena in graphene in presence of a strong perpendicu
Externí odkaz:
http://arxiv.org/abs/1201.5044