Anticorrelation between temperature and fluctuations of the switching current in moderately damped Josephson junctions
2007 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 76, no 22, 224517- p.Article in journal (Refereed) Published
Presented are the results of calculations suggesting that the quasi-one-dimensional organic superconductors (TMTSF)2X (where TMTSF represents tetramethyltetraselenafulvalene and X is PF6 AsF6, ClO4, etc.) may show a substantial increase in their superconducting and spin-density-wave ordering temperatures when the Fermi level is raised through application of an electrostatic gating voltage. A rich behavior is observed, strongly dependent on the form of the superconducting order parameter, as the Fermi level approaches the Van Hove singularity at ka=0. Included are predictions for the behavior of these materials under zero and moderate applied pressure. It is found that TSDW as high as 50 K and superconducting Tc as high as 20 K may be achieved at optimal gate voltages of approximately 100 mV.
Place, publisher, year, edition, pages
2007. Vol. 76, no 22, 224517- p.
IdentifiersURN: urn:nbn:se:su:diva-12493DOI: 10.1103/PhysRevB.76.224518ISI: 000251986400087OAI: oai:DiVA.org:su-12493DiVA: diva2:179013