Work

Experimental observation of high-field diamagnetic fluctuations in niobium

Year: 2002

Type: article

Abstract: We have performed a magnetic study of a bulk metallic sample of Nb with critical temperature ${T}_{c}=8.5\mathrm{K}.$ Magnetization versus temperature $(M$ vs $T)$ data obtained for fixed magnetic fields above 1 kOe show a superconducting transition which becomes broader as the field is increased. The data are interpreted in terms of the diamagnetic lowest Landau level (LLL) fluctuation theory. The scaling analysis gives values of the superconducting transition temperature ${T}_{c}(H)$ consistent with ${H}_{c2}(T).$ We search for universal three-dimensional LLL behavior by comparing scaling results for Nb and YBaCuO, but obtain no evidence for universality.

Source: Physical review. B, Condensed matter

DOI: 10.1103/physrevb.66.134521

Authors: S. Salem-Sugui, Mark Friesen, A. D. Alvarenga, F. G. Gandra, M. M. Doria, O. F. Schilling

Institutions: Universidade Federal do Rio de Janeiro, University of Wisconsin–Madison, Centro Brasileiro de Pesquisas Físicas, Universidade Estadual de Campinas (UNICAMP), Universidade Federal de Santa Catarina

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2000599903

FWCI: 0.629

Cites: 23

Cited by: 12

Related to: 10