Observation of vortex lattice melting in twinned YBa2Cu3O7-x using neutron small-angle scattering

被引：16

作者：

Aegerter, CM ^{[1
]}

Johnson, ST

Nuttall, WJ

Lloyd, SH

Wylie, MT

Nutley, MP

Forgan, EM

Cubitt, R

Lee, SL

Paul, DM

Yethiraj, M

Mook, HA

机构：

[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[2] Univ Birmingham, Sch Phys & Space Res, Birmingham B15 2TT, W Midlands, England

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[4] Univ St Andrews, Dept Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[5] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[6] Oak Ridge Natl Lab, Div Solid State, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.57.14511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A neutron small-angle scattering study of the flux-line lattice in heavily twinned YBa2Cu3O7-x is presented. It is found that the diffraction signal disappears at temperatures well below: T-c, associated with a melting of the flux lattice. The shape of the melting line is consistent with both a Lindemann criterion and the scaling expected for a vortex-glass transition with the superconducting parameters from the three-dimensional XY model. The influence of twin planes on the structure of the vortex lattice and its melting is studied by applying; the field at different angles to the c axis. The results are compared with recent specific heat measurements on similar crystals.

引用

页码：14511 / 14517

页数：7

共 32 条

[1]

AEGERTER CM, UNPUB

[2] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].