Systematic Studies of the Square-Hexagonal Flux Line Lattice Transition in Lu(Ni{sub 1{minus}x}Co{sub x}) {sub 2}B{sub 2}C : The Role of Nonlocality

Journal Article · Sat May 01 04:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.4082· OSTI ID:342620

Gammel, P L; Bishop, D J ^[1]; Eskildsen, M R; Mortensen, K; Andersen, N H ^[2]; Fisher, I R; Cheon, K O; Canfield, P C; Kogan, V G ^[3]

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1. Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 (United States)
2. Riso/ National Laboratory, DK-4000 Roskilde (Denmark)
3. Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011 (United States)

We have studied, using small angle neutron scattering, the flux line lattice square to hexagonal symmetry transition in single crystal Lu(Ni{sub 1{minus}x}Co{sub x }){sub 2}B{sub 2}C . Low Co concentrations (x{lt}0.1) , which reduce the mean free path and increase the coherence length, also move the structural transition to higher fields than in the undoped system. These data, quantitatively understood within the framework of a theory that includes nonlocal corrections to the London model due to the Fermi surface anisotropy, can be modeled using a simple ratio of the nonlocality range to the intervortex spacing. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 342620
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 20 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CARBIDES
COBALT COMPOUNDS
COHERENCE LENGTH
LUTETIUM BORIDES
MAGNETIC FLUX
MONOCRYSTALS
NEUTRON DIFFRACTION
NICKEL CARBIDES
PHASE TRANSFORMATIONS
SMALL ANGLE SCATTERING
SUPERCONDUCTORS
VORTICES