Geometric barrier and current string in type-II superconductors obtained from continuum electrodynamics

被引：121

作者：

Brandt, EH ^{[1
]}

机构：

[1] Max Planck Inst Met Forsch, D-70506 Stuttgart, Germany

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.59.3369

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown how the current density J(r,t) and magnetic induction B(r,t) in a superconductor with arbitrary shape and material laws H(B,r) (equilibrium field) and E(J,B,r) (electric field caused by flux-line motion) can be calculated within continuum approximation when a magnetic field B-a(r,r) and/or current are applied. This general method is then used to calculate the geometric edge barrier for flux penetration, and Indenbom's current string occurring at the flux front, for superconducting strips with rectangular cross section in a perpendicular field. The field of first flux entry B-en is given. Both effects could not be obtained by previous theories which assume H = B/mu(0). [S0163-1829(99)00706-7].

引用

页码：3369 / 3372

页数：4

共 22 条

[1] Magnetic hysteresis from the geometrical barrier in type-II superconducting strips [J].

Benkraouda, M ;

Clem, JR .

PHYSICAL REVIEW B, 1996, 53 (09) :5716-5726

[2] Precision Ginzburg-Landau solution of ideal vortex lattices for any induction and symmetry [J].

Brandt, EH .

PHYSICAL REVIEW LETTERS, 1997, 78 (11) :2208-2211

[3] Superconductor disks and cylinders in an axial magnetic field: II. Nonlinear and linear ac susceptibilities [J].

Brandt, EH .

PHYSICAL REVIEW B, 1998, 58 (10) :6523-6533

[4] Superconductors of finite thickness in a perpendicular magnetic field: Strips and slabs [J].

Brandt, EH .

PHYSICAL REVIEW B, 1996, 54 (06) :4246-4264

[5] THE FLUX-LINE-LATTICE IN SUPERCONDUCTORS [J].

BRANDT, EH .

REPORTS ON PROGRESS IN PHYSICS, 1995, 58 (11) :1465-1594

[6] Superconductor disks and cylinders in an axial magnetic field. I. Flux penetration and magnetization curves [J].

Brandt, EH .

PHYSICAL REVIEW B, 1998, 58 (10) :6506-6522

[7] MAGNETIC-RELAXATION OVER THE BEAN-LIVINGSTON SURFACE-BARRIER [J].

BURLACHKOV, L .

PHYSICAL REVIEW B, 1993, 47 (13) :8056-8064

[8] Quasi-static magnetic behaviour of a disc-shaped type II superconductor [J].

Doyle, TB ;

Labusch, R ;

Doyle, RA .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1997, 290 (1-2) :148-160

[9] MAGNETIZATION OF A TYPE-I SUPERCONDUCTING SLAB IN THE THERMODYNAMIC AND THE METASTABLE PHASES [J].

FORTINI, A ;

HAIRIE, A ;

PAUMIER, E .

PHYSICAL REVIEW B, 1980, 21 (11) :5065-5075

[10] Meissner Shielding Currents and Magnetic Flux Penetration in Thin-Film Superconductors [J].

Huebener, R. P. ;

Kampwirth, R. T. ;

Clem, John R. .

JOURNAL OF LOW TEMPERATURE PHYSICS, 1972, 6 (3-4) :275-285

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