Abstract
The microscopic scenario of vortex escape from a columnar defect under the influence of a transport current has been studied. For defect radii smaller than the superconducting coherence length the depinning process is shown to be a consequence of two subsequent topological electronic transitions in a trapped vortex core. The first transition at a critical current j L is associated with the opening of Fermi surface segments corresponding to the creation of a vortex-antivortex pair bound to the defect. The second transition at a certain current j d > j L is caused by merging of different Fermi surface segments, which accompanies the formation of a freely moving vortex.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. Blatter, M. V. Feigel’man, V. B. Geshkenbein, et al., Rev. Mod. Phys. 66, 1125 (1994).
G. S. Mkrtchyan and V. V. Shmidt, Sov. Phys. JETP 34, 195 (1972).
A. Buzdin and D. Feinberg, Physica C 256, 303 (1996).
A. Buzdin and M. Daumens, Physica C 294, 257 (1998).
H. Nordborg and V. M. Vinokur, Phys. Rev. B 62, 12408 (2000).
E. V. Thuneberg, J. Kurkijarvi, and D. Rainer, Phys. Rev. Lett. 48, 1853 (1982); Phys. Rev. B 29, 3913 (1984).
E. V. Thuneberg, J. Low Temp. Phys. 57, 415 (1984).
C. Caroli, P. G. de Gennes, and J. Matricon, Phys. Lett. 9, 307 (1964).
L. Kramer and W. Pesch, Z. Physik 269, 59 (1974).
N. B. Kopnin, Theory of Nonequilibrium Superconductivity (Clarendon, Oxford, 2001).
G. E. Volovik, The Universe in a Helium Droplet (Clarendon, Oxford, 2003).
I. M. Lifshits, Sov. Phys. JETP 11, 1130 (1960).
Y. M. Blanter, M. I. Kaganov, A. V. Pantsulaya, and A. A. Varlamov, Phys. Rep. 245, 159 (1994).
G. E. Volovik, JETP Lett. 49, 391 (1989).
A. S. Mel’nikov, D. A. Ryzhov, and M. A. Silaev, Phys. Rev. B 78, 064513 (2008).
A. S. Mel’nikov and M. A. Silaev, JETP Lett. 83, 578 (2006).
A. I. Larkin and Yu. N. Ovchinnikov, Phys. Rev. B 57, 5457 (1998).
A. S. Mel’nikov, A. V. Samokhvalov, and M. N. Zubarev, Phys. Rev. B 79, 134529 (2009).
L. D. Landau and E. M. Lifshitz, Statistical Physics, Part 2 (Pergamon, New York, 1980).
G. E. Volovik, JETP Lett. 58, 455 (1993).
Author information
Authors and Affiliations
Corresponding author
Additional information
The article is published in the original.
Rights and permissions
About this article
Cite this article
Mel’nikov, A.S., Samokhvalov, A.V. Abrikosov vortex escape from a columnar defect as a topological electronic transition in a vortex core. Jetp Lett. 94, 759–763 (2012). https://doi.org/10.1134/S0021364011220085
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0021364011220085