Morphology of the Superconducting Vortex Lattice in Ultrapure Niobium

被引：44

作者：

Muehlbauer, S. ^{[1
,2
]}

Pfleiderer, C. ^{[1
]}

Boeni, P. ^{[1
]}

Laver, M. ^{[3
,4
]}

Forgan, E. M. ^{[7
]}

Fort, D.

Keiderling, U. ^{[5
]}

Behr, G. ^{[6
]}

机构：

[1] Tech Univ Munich, Phy Dept E21, D-85748 Garching, Germany

[2] Forsch Neutronenquelle Heinz Maier Leibnitz, D-85748 Garching, Germany

[3] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[4] Univ Maryland, College Pk, MD 20742 USA

[5] BENSC, Helmholtz Zentrum Berlin, D-14109 Berlin, Germany

[6] Leibnitz Inst Festkorper & Werkstoffforsch IFW, D-01069 Dresden, Germany

[7] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 13期

关键词：

FIELD GALVANOMAGNETIC PROPERTIES; ENERGY-GAP; STATE;

D O I：

10.1103/PhysRevLett.102.136408

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The morphology of the superconducting flux line lattice (FLL) of Nb comprises gradual variations with various lock-in transitions and symmetry breaking rotations. We report a comprehensive small-angle neutron scattering study of the FLL in an ultrapure single crystal of Nb as a function of the orientation of the applied magnetic field. We attribute the general morphology of the FLL and its orientation to three dominant mechanisms; first, nonlocal contributions, second, the transition between open and closed Fermi surface sheets and, third, the intermediate mixed state between the Meissner and the Shubnikov phase.

引用

页数：4

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