Nonlocal effects in angular dependence of in-plane magnetization of tetragonal superconductors

Journal Article · Mon Nov 01 04:00:00 EST 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.R12577· OSTI ID:690739

Kogan, V G; Budko, S L; Canfield, P C ^[1]; Miranovic, P ^[2]

---

1. Ames Laboratory--DOE and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)
2. Department of Physics, University of Montenegro, Podgorica (Yugoslavia)

The reversible magnetization {ital M} of Lu(Ni{sub 1{minus}x}Co{sub x}){sub 2}B{sub 2}C with x=0 and 0.06 is measured in a broad temperature domain as a function of field orientation {theta} in the basal crystal plane. The data are interpreted within London theory extended for nonlocality of the current-field relation in superconductors. The dependence M({theta}) diminishes on warming, vanishes at T{sup {asterisk}}{lt}T{sub c}, and changes sign for T{gt}T{sup {asterisk}}. The low-T sign is opposite to what is expected from the known angular dependence of the upper critical field and therefore cannot be attributed to the latter. Upon doping with Co, the effect disappears with decreasing mean-free path in agreement with theory. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 690739
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 18 Vol. 60; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
66 PHYSICS
ANGULAR DISTRIBUTION
COBALT BORIDES
COBALT CARBIDES
COBALT COMPOUNDS
CRITICAL FIELD
LUTETIUM BORIDES
LUTETIUM CARBIDES
LUTETIUM COMPOUNDS
MAGNETIZATION
NICKEL BORIDES
NICKEL CARBIDES
NICKEL COMPOUNDS
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
TYPE-II SUPERCONDUCTORS