Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Golovach, V."'
Publikováno v:
Phys. Rev. B 101, 180502 (2020)
We study the magnetic and superconducting proximity effects in a semiconducting nanowire (NW) attached to superconducting leads and a ferromagnetic insulator (FI). We show that a sizable equilibrium spin polarization arises in the NW due to the inter
Externí odkaz:
http://arxiv.org/abs/2002.08230
Autor:
Rouco, Mikel, Chakraborty, Subrata, Aikebaier, Faluke, Golovach, V. N., Strambini, Elia, Moodera, Jagadeesh S., Giazotto, Francesco, Heikkilä, Tero T., Bergeret, F. Sebastian
Publikováno v:
Phys. Rev. B 100, 184501 (2019)
We investigate transport properties of junctions between two spin-split superconductors linked by a spin-polarized tunneling barrier. The spin-splitting fields in the superconductors (S) are induced by adjacent ferromagnetic insulating (FI) layers wi
Externí odkaz:
http://arxiv.org/abs/1906.09079
We present a theory of the spin Hall magnetoresistance of metals in contact with magnetic insulators. We express the spin-mixing conductances, which govern the phenomenology of the effect, in terms of the microscopic parameters of the interface and t
Externí odkaz:
http://arxiv.org/abs/1903.10558
Publikováno v:
Phys. Rev. Materials 1, 054402 (2017)
A ferromagnetic insulator attached to a superconductor is known to induce an exchange splitting of the Bardeen-Cooper-Schrieffer (BCS) singularity by a magnitude proportional to the magnetization, and penetrating into the superconductor to a depth co
Externí odkaz:
http://arxiv.org/abs/1705.04795
Autor:
Ares, N., Katsaros, G., Golovach, V. N., Zhang, J. J., Prager, A., Glazman, L. I., Schmidt, O. G., De Franceschi, S.
Publikováno v:
Appl. Phys. Lett. 103, 263113 (2013)
We report on hole g-factor measurements in three terminal SiGe self-assembled quantum dot devices with a top gate electrode positioned very close to the nanostructure. Measurements of both the perpendicular as well as the parallel g-factor reveal sig
Externí odkaz:
http://arxiv.org/abs/1307.7196
Publikováno v:
Phys. Rev. Lett. 111, 186601 (2013)
We propose a nano-scale realization of a phonon laser utilizing phonon-assisted spin flips in quantum dots to amplify sound. Owing to a long spin relaxation time, the device can be operated in a strong pumping regime, in which the population inversio
Externí odkaz:
http://arxiv.org/abs/1306.1786
Autor:
Ares, N., Golovach, V. N., Katsaros, G., Stoffel, M., Fournel, F., Glazman, L. I., Schmidt, O. G., De Franceschi, S.
Publikováno v:
Phys. Rev. Lett. 110, 046602 (2013)
Electrically tunable g-factors in quantum dots are highly desirable for applications in quantum computing and spintronics. We report giant modulation of the hole g-factor in a SiGe nanocrystal when an electric field is applied to the nanocrystal alon
Externí odkaz:
http://arxiv.org/abs/1208.0476
Autor:
Katsaros, G., Golovach, V. N., Spathis, P., Ares, N., Stoffel, M., Fournel, F., Schmidt, O. G., Glazman, L. I., De Franceschi, S.
Publikováno v:
Phys. Rev. Lett. 107, 246601 (2011)
Spin-selective tunneling of holes in SiGe nanocrystals contacted by normal-metal leads is reported. The spin selectivity arises from an interplay of the orbital effect of the magnetic field with the strong spin-orbit interaction present in the valenc
Externí odkaz:
http://arxiv.org/abs/1107.3919
Publikováno v:
Phys. Rev. B 83, 075401 (2011)
Single dopants in semiconductor nanostructures have been studied in great details recently as they are good candidates for quantum bits, provided they are coupled to a detector. Here we report coupling of a single As donor atom to a single-electron t
Externí odkaz:
http://arxiv.org/abs/1012.5544
Autor:
Egues, J. C., Recher, P., Saraga, D. S., Golovach, V. N., Burkard, G., Sukhorukov, E. V., Loss, D.
Publikováno v:
NATO Science Series, "Quantum Noise in Mesoscopic Physics", vol. 97, pp 241-274, Kluwer, 2003, The Netherlands
We review our recent contributions on shot noise for entangled electrons and spin-polarized currents in novel mesoscopic geometries. We first discuss some of our recent proposals for electron entanglers involving a superconductor coupled to a double
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210498