Research PapersNo Access

EFFECTS OF INTERNAL DEFECT ON THE VORTEX ENTRANCE IN MESOSCOPIC SUPERCONDUCTOR

J. BARBA-ORTEGA

Departamento de Física, Universidad Nacional de Colombia, Carrera 30♯45-03, Bogota, 1149, Colombia

Search for more papers by this author

MIRYAM R. JOYA

Departamento de Física, Universidad Nacional de Colombia, Carrera 30♯45-03, Bogota, 1149, Colombia

Search for more papers by this author

, and

GILMAR E. MARQUES

Departamento de Física, Universidade Federal de São Carlos, 13560-905 São Carlos, SP, Brazil

Search for more papers by this author

https://doi.org/10.1142/S0217984913500759Cited by:1 (Source: Crossref)

Abstract

In this paper, we report on the influence of an internal defect on the vortex entrance in a mesoscopic superconducting sample. Effects associated to the pinning force of the defect on the configuration and on the vortex entry fields are studied for a very thin disk. We calculate the supercurrent, magnetization, vorticity, free energy and Cooper pairs density for a disk in presence of external magnetic field applied perpendicular to the disk plane. Due to vortex–defect attraction (repulsion), the vortices always (never) are found to be sitting on the defect position.

Keywords:

PACS: 74.20.De, 74.25.N-, 74.25.Wx, 74.78.-w, 75.40.Mg

References

D. A. Butts and D. S. Rokhsar, Nature (London) 327, 397 (1999). Google Scholar
C. Reichhardt and C. J. Olson, Phys. Rev. Lett. 88, 248301 (2002), DOI: 10.1103/PhysRevLett.88.248301. Web of Science, ADS, Google Scholar
A. Kandaet al., Phys. Rev. Lett. 93, 257002 (2004), DOI: 10.1103/PhysRevLett.93.257002. Web of Science, ADS, Google Scholar
A. Kandaet al., Phys. Rev. B 76, 094519 (2007), DOI: 10.1103/PhysRevB.76.094519. Web of Science, Google Scholar
I. V. Grigorievaet al., Phys. Rev. Lett. 99, 147003 (2007), DOI: 10.1103/PhysRevLett.99.147003. Web of Science, ADS, Google Scholar
J. Berger and J. Rubinstein, Phys. Rev. B 59, 8896 (1999), DOI: 10.1103/PhysRevB.59.8896. Web of Science, ADS, Google Scholar
B. J. Baelus, K. Kadowaki and F. M. Peeters, Phys. Rev. B 71, 054514 (2005). Google Scholar
D. Y. Vodolazov, B. J. Baelus and F. M. Peeters, Phys. Rev. B 66, 054531 (2002), DOI: 10.1103/PhysRevB.66.054531. Web of Science, Google Scholar
E. Sardella, P. N. L. Filho and A. L. Malvezzi, Phys. Rev. B 77, 104508 (2008), DOI: 10.1103/PhysRevB.77.104508. Web of Science, Google Scholar
E. Sardella and E. H. Brandt, Supercond. Sci. Technol. 23, 025015 (2010), DOI: 10.1088/0953-2048/23/2/025015. Web of Science, Google Scholar
J. Barba-Ortega, E. Sardella and J. A. Aguiar, Mod. Phys. Lett. B 27(4), 1350025 (2013), DOI: 10.1142/S0217984913500255. Link, Web of Science, Google Scholar
J. Barba-Ortega, E. Sardella and J. A. Aguiar, Supercond. Sci. Technol. 24, 015001 (2011), DOI: 10.1088/0953-2048/24/1/015001. Web of Science, Google Scholar
B. J. Baelus, F. M. Peeters and V. A. Schweigert, Phys. Rev. B 61, 9734 (2000), DOI: 10.1103/PhysRevB.61.9734. Web of Science, ADS, Google Scholar
G. R. Berdiyorovet al., Phys. Rev. B 77, 024526 (2008), DOI: 10.1103/PhysRevB.77.024526. Web of Science, Google Scholar
J. R. Clem, Low Temperature Physics 3, eds. K. D. Timmerhaus, W. J. O'Sullivan and E. F. Hammel (Plenum, New York, 1974) p. 102. Google Scholar
L. Burlachkov, Phys. Rev. B 47, 8056 (1993), DOI: 10.1103/PhysRevB.47.8056. Web of Science, ADS, Google Scholar
J. Barba-Ortegaet al., Physica C 479, 49 (2012), DOI: 10.1016/j.physc.2012.01.021. Web of Science, ADS, Google Scholar
J. Barba-Ortega, E. Sardella and J. A. Aguiar, Physica C 485, 107 (2013), DOI: 10.1016/j.physc.2012.11.004. Web of Science, ADS, Google Scholar
S. J. Chapman and D. H. Heron, SIAM J. Appl. Math. 58, 1808 (1998). Web of Science, Google Scholar
S. J. Chapman, Q. Du and M. S. Gunzburger, Z. Angew. Math. Phys. 47, 410 (1996), DOI: 10.1007/BF00916647. Web of Science, Google Scholar
D. S. Golubovicet al., Phys. Rev. B 71, 180502 (2005). Web of Science, Google Scholar