Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Oboznov, V."'
Autor:
Stoutimore, M. J. A., Rossolenko, A. N., Bolginov, V. V., Oboznov, V. A., Rusanov, A. Y., Baranov, D. S., Pugach, N., Frolov, S. M., Ryazanov, V. V., Van Harlingen, D. J.
Publikováno v:
Phys. Rev. Lett. 121, 177702 (2018)
We report the observation of a current-phase relation dominated by the second Josephson harmonic in superconductor-ferromagnet-superconductor junctions. The exotic current-phase relation is realized in the vicinity of a temperature-controlled 0-to-$\
Externí odkaz:
http://arxiv.org/abs/1805.12546
Autor:
Shcherbakova, A. V., Fedorov, K. G., Shulga, K. V., Ryazanov, V. V., Bolginov, V. V., Oboznov, V. A, Egorov, S. V., Shkolnikov, V. O., Wolf, M. J., Beckmann, D., Ustinov, A. V.
We describe fabrication and testing of composite flux qubits combining Nb- and Al-based superconducting circuit technology. This hybrid approach to making qubits allows for employing pi-phase shifters fabricated using well-established Nb-based techno
Externí odkaz:
http://arxiv.org/abs/1405.0373
Autor:
Feofanov, A. K., Oboznov, V. A., Bol'ginov, V. V., Lisenfeld, J., Poletto, S., Ryazanov, V. V., Rossolenko, A. N., Khabipov, M., Balashov, D., Zorin, A. B., Dmitriev, P. N., Koshelets, V. P., Ustinov, A. V.
The difference between the phases of superconducting order parameter plays in superconducting circuits the role similar to that played by the electrostatic potential difference required to drive a current in conventional circuits. This fundamental pr
Externí odkaz:
http://arxiv.org/abs/1005.1581
Publikováno v:
Phys. Rev. B 78, 104517 (2008)
We analyze theoretically and experimentally vortex configurations in mesoscopic superconducting squares. Our theoretical approach is based on the analytical solution of the London equation using Green's-function method. The potential-energy landscape
Externí odkaz:
http://arxiv.org/abs/0902.4174
Autor:
Veshchunov, I. S., Oboznov, V. A., Rossolenko, A. N., Prokofiev, A. S., Vinnikov, L. Ya., Rusanov, A. Yu., Matveev, D. V.
We report on the first experimental visualization of domain structure in films of weakly ferromagnetic Cu$_{0,47}$Ni$_{0,53}$ alloy with different thickness at liquid helium temperatures. Improved high-resolution Bitter decoration technique was used
Externí odkaz:
http://arxiv.org/abs/0811.2331
We report the first experimental observation of the two-node thickness dependence of the critical current in Josephson junctions with a ferromagnetic interlayer. Vanishings of the critical current correspond to transitions into pi-state and back into
Externí odkaz:
http://arxiv.org/abs/cond-mat/0508573
Autor:
Grigorieva, I. V., Vinnikov, L. Y., Escoffier, W., Richardson, J., Dubonos, S. V., Oboznov, V., Geim, A. K.
We have visualised and studied vortex configurations in mesoscopic superconducting disks using the Bitter decoration technique. For a broad range of vorticities L the circular geometry is found to result in the formation of concentric shells of vorti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506642
We study Superconductor-Ferromagnet-Superconductor (Nb-Cu0.47 Ni0.53-Nb) Josephson junctions with spatial variations in the barrier thickness. Critical current vs. magnetic flux diffraction patterns indicate that the critical current density changes
Externí odkaz:
http://arxiv.org/abs/cond-mat/0506003
Autor:
Krasnov, V. M., Ericsson, O., Intiso, S., Delsing, P., Oboznov, V. A., Prokofiev, A. S., Ryazanov, V. V.
Publikováno v:
Physica C 418 (2005) 16
Superconductor-Ferromagnet-Superconductor (S-F-S) Josephson junctions were fabricated by making a narrow cut through a S-F double layer using direct writing by Focused Ion Beam (FIB). Due to a high resolution (spot size smaller than 10 nm) of FIB, ju
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411152
We present measurements of the current-phase relation (CPR) of Superconductor-Ferromagnet-Superconductor (SFS) Josephson junctions as a function of temperature. The CPR is determined by incorporating the junction into a superconducting loop coupled t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0402434