Superconductivity in a wedge: analytical variational results

被引:20
作者
Brosens, F
Devreese, JT
Fomin, VM
Moschalkov, VV
机构
[1] Univ Instelling Antwerp, Lab Theoret Fys van Vaste Stof, B-2610 Antwerp, Belgium
[2] Katholieke Univ Leuven, Vaste Stof Fys & Magnetisme Lab, B-3001 Louvain, Belgium
[3] Tech Univ Eindhoven, NL-5600 MB Eindhoven, Netherlands
[4] State Univ Moidova, Dept Theoret Phys, MD-2009 Kishinev, Moldova
关键词
superconductors; surfaces and interfaces; phase transitions;
D O I
10.1016/S0038-1098(99)00227-6
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
An analytical variational solution is found for the linearized Ginzburg-Landau equation describing the super-conducting phase in a wedge embedded in a dielectric. The nucleation magnetic field is analysed as a function of the wedge's angle alpha. In case of small angles, the enhancement of the nucleation field with decreasing angle is described by the dependence H-c3/N-c2 = (2/3)(1/2) alpha(-1), where H-c2 is the bulk upper critical field. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:565 / 569
页数:5
相关论文
共 14 条
[1]  
de Gennes P. G., 1989, SUPERCONDUCTIVITY ME
[2]   On the superconducting phase boundary for a mesoscopic square loop [J].
Fomin, VM ;
Misko, VR ;
Devreese, JT ;
Moshchalkov, VV .
SOLID STATE COMMUNICATIONS, 1997, 101 (05) :303-308
[3]   Surface superconductivity in a wedge [J].
Fomin, VM ;
Devreese, JT ;
Moshchalkov, VV .
EUROPHYSICS LETTERS, 1998, 42 (05) :553-558
[4]   Surface superconductivity in a wedge (vol 42, pg 553, 1998) [J].
Fomin, VM ;
Devreese, JT ;
Moshchalkov, VV .
EUROPHYSICS LETTERS, 1999, 46 (01) :118-119
[5]   Superconducting mesoscopic square loop [J].
Fomin, VM ;
Misko, VR ;
Devreese, JT ;
Moshchalkov, VV .
PHYSICAL REVIEW B, 1998, 58 (17) :11703-11715
[6]  
Ginzburg V.L., 1950, ZH EKSP TEOR FIZ+, V20, P1064, DOI DOI 10.1007/978-3-540-68008-6_4
[7]  
KLIMIN SN, 1999, IN PRESS SOLID STATE
[8]  
LANDAU LD, 1989, COURSE THEORETICAL P, V9, P76802
[9]   EFFECT OF SAMPLE TOPOLOGY ON THE CRITICAL FIELDS OF MESOSCOPIC SUPERCONDUCTORS [J].
MOSHCHALKOV, VV ;
GIELEN, L ;
STRUNK, C ;
JONCKHEERE, R ;
QIU, X ;
VANHAESENDONCK, C ;
BRUYNSERAEDE, Y .
NATURE, 1995, 373 (6512) :319-322
[10]  
MOSHCHALKOV VV, 1998, HDB NANOSTRUCTURED M