Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Avraham Schiller"'
The transient processes of electron transport in nano-scale devices exhibit special phenomena that exist only in the transient regime. Besides how fast the steady states are approached, one interesting aspect of transient transport arises from its st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c04687c5b48d16aeba336e009d03ebc
http://arxiv.org/abs/1601.01081
http://arxiv.org/abs/1601.01081
We develop a low-order conserving approximation for the interacting resonant-level model (IRLM), and apply it to (i) thermal equilibrium, (ii) nonequilibrium steady state, and (iii) nonequilibrium quench dynamics. Thermal equilibrium is first used to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::980c050d41bad1008f04db1ed2bd5cde
http://arxiv.org/abs/1406.0254
http://arxiv.org/abs/1406.0254
Publikováno v:
Physical Review B. 62:R16227-R16230
We present a procedure to calculate 1/d corrections to the two-particle properties around the infinite dimensional dynamical mean field limit. Our method is based on a modified version of the scheme of Ref. onlinecite{SchillerIngersent}}. To test our
Autor:
Selman Hershfield, Avraham Schiller
Publikováno v:
Physical Review B. 58:14978-15010
We present an exact solution to the nonequilibrium Kondo problem, based on a special point in the parameter space of the model where both the Hamiltonian and the operator describing the nonequilibrium distribution can be diagonalized simultaneously.
Publikováno v:
Physical Review B. 57:2991-2999
We perturb about an exactly solvable point for the nonequilibrium Kondo problem. In each of the three independent directions in parameter space, the differential conductance evolves smoothly as one goes away from the solvable point, and the lowest-or
In molecular devices, electronic degrees of freedom are coupled to vibrational modes of the molecule, offering an opportunity to study fundamental aspects of this coupling at the nanoscale. To this end, we consider the nonequilibrium heat exchange be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94fc14383c82d14ce58319a7d6a5ae1e
http://arxiv.org/abs/1310.7723
http://arxiv.org/abs/1310.7723
The crossover between two customary limits of phonon-assisted tunneling, the adiabatic and antiadiabatic regimes, is studied systematically in the framework of a minimal model for molecular devices: a resonant level coupled by displacement to a local
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b562649b866c218c052c3a444312074
http://arxiv.org/abs/1303.7161
http://arxiv.org/abs/1303.7161
Autor:
Kevin Ingersent, Avraham Schiller
Publikováno v:
Physical Review Letters. 75:113-116
We present a self-consistent treatment of Hubbard-like lattice models at large, but finite, spatial dimensions $d$. This involves a systematic expansion in powers of $1/d$ about the limit $d\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensurema
Autor:
Avraham Schiller, Selman Hershfield
Publikováno v:
Physical Review B. 51:12896-12899
We solve exactly a version of the nonequilibrium Kondo problem, which consists of two leads at different chemical potentials connected by a magnetic impurity. Using the nonequilibrium steady-state solution, a host of properties are computed: charge a
A hybrid approach to nonequilibrium dynamics of quantum impurity systems is presented. The numerical renormalization group serves as a means to generate a suitable low-energy Hamiltonian, allowing for an accurate evaluation of the real-time dynamics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db99635ab6fe5652fcff7cdfaef00473
http://arxiv.org/abs/1206.2186
http://arxiv.org/abs/1206.2186