FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR

doi:10.1088/1009-1963/9/12/010

中国物理B ›› 2000, Vol. 9 ›› Issue (12): 934-943.doi: 10.1088/1009-1963/9/12/010

FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR

刘钧钧, 甘子钊

State Key Laboratory for Mesoscopic Physics and Department of Physics, Beijing University, Beijing 100871, China

收稿日期:2000-06-09 出版日期:2000-12-15 发布日期:2005-06-10
基金资助:
Project supported by the Ministry of Science and Technology of China. (NKBRSF-G19990646)

FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR

Liu Jun-jun (刘钧钧), Gan Zi-zhao (甘子钊)

State Key Laboratory for Mesoscopic Physics and Department of Physics, Beijing University, Beijing 100871, China

Received:2000-06-09 Online:2000-12-15 Published:2005-06-10
Supported by:
Project supported by the Ministry of Science and Technology of China. (NKBRSF-G19990646)

摘要/Abstract

摘要： In this paper, we study the magnetic structure of the half-ring flux line ended on the surface of a superconductor. The elemental modes for these half-ring flux lines are the half-ellipse flux lines ended on and perpendicular to the surface. The statistics of these half-ring flux lines is, in a certain degree, similar to the vortex-antivortex pairs in thin superconducting films. An abrupt change of the thermodynamic properties for this system takes place at a temperature lower than T_c. It is analogous to the KT transition in thin superconducting films in certain sense.

Abstract: In this paper, we study the magnetic structure of the half-ring flux line ended on the surface of a superconductor. The elemental modes for these half-ring flux lines are the half-ellipse flux lines ended on and perpendicular to the surface. The statistics of these half-ring flux lines is, in a certain degree, similar to the vortex-antivortex pairs in thin superconducting films. An abrupt change of the thermodynamic properties for this system takes place at a temperature lower than T_c. It is analogous to the KT transition in thin superconducting films in certain sense.

Key words: Kosterlitz-Thouless transition, 3-dimensional superconductor, surface of superconductor, flux lines.

中图分类号: (Thermodynamic properties)

74.25.Bt

74.78.-w (Superconducting films and low-dimensional structures)

刘钧钧, 甘子钊. FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR[J]. 中国物理B, 2000, 9(12): 934-943.

Liu Jun-jun (刘钧钧), Gan Zi-zhao (甘子钊). FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR[J]. Chinese Physics, 2000, 9(12): 934-943.

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FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR

FLUCTUATIONS OF FLUX LINES ON THE SURFACE OF SUPERCONDUCTOR

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