Ultra-small metallic grains: effect of statistical fluctuations of the chemical potential on superconducting correlations and vice versa
| hal.structure.identifier | Laboratoire Ondes et Matière d'Aquitaine [LOMA] | |
| hal.structure.identifier | Research Center for Applied Sciences | |
| dc.contributor.author | CROITORU, Mihail D. | |
| hal.structure.identifier | Departement Fysica | |
| dc.contributor.author | SHANENKO, A. A. | |
| hal.structure.identifier | Research Center for Applied Sciences | |
| dc.contributor.author | KAUN C., C. | |
| hal.structure.identifier | Departement Fysica | |
| dc.contributor.author | PEETERS, F. M. | |
| dc.date.created | 2012-03-25 | |
| dc.date.issued | 2012 | |
| dc.identifier.issn | 0953-8984 | |
| dc.description.abstractEn | Superconducting correlations in an isolated metallic grain are governed by the interplay between two energy scales: the mean level spacing and the bulk pairing gap 10, which are strongly influenced by the position of the chemical potential with respect to the closest single-electron level. In turn superconducting correlations affect the position of the chemical potential. Within the parity projected BCS model we investigate the probability distribution of the chemical potential in a superconducting grain with randomly distributed single-electron levels. Taking into account statistical fluctuations of the chemical potential due to the pairing interaction, we find that such fluctuations have a significant impact on the critical level spacing c at which the superconducting correlations cease: the critical ratio c=10 at which superconductivity disappears is found to be increased. | |
| dc.language.iso | en | |
| dc.publisher | IOP Publishing | |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/ | |
| dc.title.en | Ultra-small metallic grains: effect of statistical fluctuations of the chemical potential on superconducting correlations and vice versa | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1088/0953-8984/24/27/275701 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Supraconductivité [cond-mat.supr-con] | |
| dc.description.sponsorshipEurope | Superconductivity in quantum-size regime | |
| bordeaux.journal | Journal of Physics: Condensed Matter | |
| bordeaux.page | 245701 | |
| bordeaux.volume | 24 | |
| bordeaux.issue | 27 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00732015 | |
| hal.version | 1 | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00732015v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Physics:%20Condensed%20Matter&rft.date=2012&rft.volume=24&rft.issue=27&rft.spage=245701&rft.epage=245701&rft.eissn=0953-8984&rft.issn=0953-8984&rft.au=CROITORU,%20Mihail%20D.&SHANENKO,%20A.%20A.&KAUN%20C.,%20C.&PEETERS,%20F.%20M.&rft.genre=article |
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