Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Pershin, Yu P"'
Autor:
Korneeva, Yu. P., Mikhailov, M. Yu., Pershin, Yu. P., Manova, N. N., Divochiy, A. V., Vakhtomin, Yu. B., Korneev, A. A., Smirnov, K. V., Sivakov, A G, Devizenko, A. Yu., Goltsman, G. N.
Publikováno v:
Yu P Korneeva et al 2014 Supercond. Sci. Technol. 27 095012
We fabricated and characterised nanowire superconducting single-photon detectors (SSPDs) made of 4 nm thick amorphous Mo$_x$Si$_{1-x}$ films. At 1.7 K the best devices exhibit a detection efficiency up to 18% at 1.2 um wavelength of unpolarised light
Externí odkaz:
http://arxiv.org/abs/1309.7074
Publikováno v:
Phys. Rev. B 81, 195430 (2010)
We suggest a possible realization of a solid-state memory capacitive (memcapacitive) system. Our approach relies on the slow polarization rate of a medium between plates of a regular capacitor. To achieve this goal, we consider a multi-layer structur
Externí odkaz:
http://arxiv.org/abs/0912.4921
Publikováno v:
Appl. Phys. Lett. 95, 022114 (2009)
We propose a spintronic device to generate spin polarization in a mesoscopic region by purely electric means. We show that the spin Hall effect in combination with the stirring effect are sufficient to induce measurable spin polarization in a closed
Externí odkaz:
http://arxiv.org/abs/0906.0039
Autor:
Pershin, Yu. V., Di Ventra, M.
Publikováno v:
Phys. Rev. B 79, 153307 (2009)
We predict that when an alternating voltage is applied to a semiconducting system with inhomogeneous electron density in the direction perpendicular to main current flow, the spin Hall effect results in a transverse voltage containing a double-freque
Externí odkaz:
http://arxiv.org/abs/0812.4325
Autor:
Pershin, Yu. V., Di Ventra, M.
Publikováno v:
Phys. Rev. B 78, 113309 (2008)
Recently, in addition to the well-known resistor, capacitor and inductor, a fourth passive circuit element, named memristor, has been identified following theoretical predictions. The model example used in such case consisted in a nanoscale system wi
Externí odkaz:
http://arxiv.org/abs/0806.2151
Publikováno v:
Phys. Rev. B 78, 054302 (2008)
Quantum master equations are common tools to describe the dynamics of many-body systems open to an environment. Due to the interaction with the latter, even for the case of non-interacting electrons, the computational cost to solve these equations in
Externí odkaz:
http://arxiv.org/abs/0803.3216
Autor:
Pershin, Yu. V., Di Ventra, M.
Publikováno v:
Phys. Rev. B 77, 073301 (2008)
It was recently predicted [Phys. Rev. B 75, 193301 (2007)] that spin blockade may develop at nonmagnetic semiconductor/perfect ferromagnet junctions when the electron flow is directed from the semiconductor into the ferromagnet. Here we consider curr
Externí odkaz:
http://arxiv.org/abs/0707.4475
Autor:
Pershin, Yu. V., Di Ventra, M.
Publikováno v:
J. Phys.: Cond. Matter 20, 025204 (2008)
The spin Hall effect does not generally result in a charge Hall voltage. We predict that in systems with inhomogeneous electron density in the direction perpendicular to main current flow, the spin Hall effect is instead accompanied by a Hall voltage
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703310
Autor:
Pershin, Yu. V., Di Ventra, M.
Publikováno v:
Phys. Rev. B 75, 193301 (2007)
We study theoretically extraction of spin-polarized electrons at nonmagnetic semiconductor/ferromagnet junctions. The outflow of majority spin electrons from the semiconductor into the ferromagnet leaves a cloud of minority spin electrons in the semi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701678
Autor:
Pershin, Yu. V., Piermarocchi, C.
Publikováno v:
Phys. Rev. B 72, 195340 (2005)
We propose a scheme for the generation of photocurrent in bent quantum wires. We calculate the current using a generalized Landauer-Buttiker approach that takes into account the electromagnetic radiation. For circularly polarized light, we find that
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507698