Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Mygind, Jesper"'
We investigate the physics of planar annular Josephson tunnel junctions quenched through their transition temperature in the presence of an external magnetic field. Experiments carried out with long Nb/Al-AlOx/Nb annular junctions showed that the mag
Externí odkaz:
http://arxiv.org/abs/2005.06816
Publikováno v:
Phys. Rev. B 100, 064501 (2019)
We investigate Josephson flux-flow in annular Josephson tunnel junctions (AJTJs) under the application of magnetic fields generating finite-voltage steps in their current-voltage characteristics. Experimental data are presented for confocal AJTJs whi
Externí odkaz:
http://arxiv.org/abs/1905.07197
Publikováno v:
Jou. Low Temp. Phys. Vol.192, 315 (2018)
Confocal Annular Josephson Tunnel Junctions (CAJTJs) which are the natural generalization of the circular annular Josephson tunnel junctions, have a rich nonlinear phenomenology due to the intrinsic non-uniformity of their planar tunnel barrier delim
Externí odkaz:
http://arxiv.org/abs/1805.07280
Publikováno v:
Superconductor Science and Technology, Volume 31, Number 2, 2017
We report theoretical and experimental work on the development of a Josephson vortex qubit based on a confocal annular Josephson tunnel junction (CAJTJ). The key ingredient of this geometrical configuration is a periodically variable width that gener
Externí odkaz:
http://arxiv.org/abs/1707.01672
Autor:
Monaco, Roberto, Mygind, Jesper
Publikováno v:
J. Low Temp. Phys., Vol. 182, Issue 3/4, pp. 1-13 (2016)
We analyze the dynamics of a magnetic flux quantum (current vortex) trapped in a current-biased long planar elliptic annular Josephson tunnel junction. The system is modeled by a perturbed sine-Gordon equation that determines the spatial and temporal
Externí odkaz:
http://arxiv.org/abs/1510.02254
Publikováno v:
Supercond. Sci. Technol. vol. 28, p. 085010 (2015)
We have investigated the static properties of one-dimensional planar Josephson tunnel junctions in the most general case of elliptic annuli. We have analyzed the dependence of the critical current in the presence of an external magnetic field applied
Externí odkaz:
http://arxiv.org/abs/1501.03335
Publikováno v:
Physical Review B, Volume: 85, Issue: 9, Article Number: 094514 (2012)
In order to mimic the phase changes in the primordial Big Bang, several "cosmological" solid-state experiments have been conceived, during the last decade, to investigate the spontaneous symmetry breaking in superconductors and superfluids cooled thr
Externí odkaz:
http://arxiv.org/abs/1112.1265
Publikováno v:
Applied Physics Letters vol.98, p.072503 (2011)
We measured the magnetic field dependence of the critical current of high quality Nb-based planar Josephson tunnel junctions in the presence of a controllable non-uniform field distribution. We found skewed and slowly changing magnetic diffraction pa
Externí odkaz:
http://arxiv.org/abs/1101.1610
Cotunneling is an important error process in the application of single electron tunneling devices for metrological and electronic applications. Here we present an experimental investigation of the theory for adiabatic enhancement of cotunneling by co
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207639
Publikováno v:
Physical Review B Volume: 67 Issue: 10 Article Number: 104506 (2003)
It has been argued by Zurek and Kibble that the likelihood of producing defects in a continuous phase transition depends in a characteristic way on the quench rate. In this paper we discuss our experiment for measuring the Zurek-Kibble scaling expone
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207504