Abstract
Recently, strong superconducting fluctuations above H{sub c2} have attracted many interests in lower-doped high-T{sub c} superconductors whose coherence length is very short. However, it is difficult to treat theoretically full fluctuations of the superconducting order parameter, i.e., the amplitude and the phase degree of freedom in the region. Therefore, we perform numerical simulations of the time-dependent Ginzburg-Landau equation with thermal fluctuations above H{sub c2} and clarify how the order parameter fluctuates. The simulation results reveal that vortices are well-defined objects even in a wide region above H{sub c2} although those fluctuates temporarily and spatially with finite life times.
Citation Formats
Machida, Masahiko, and Itakura, Mitsuhiro.
Phase and amplitude fluctuations above the upper critical field in type II superconductors with short coherence length.
Netherlands: N. p.,
2004.
Web.
doi:10.1016/j.physc.2003.12.044.
Machida, Masahiko, & Itakura, Mitsuhiro.
Phase and amplitude fluctuations above the upper critical field in type II superconductors with short coherence length.
Netherlands.
https://doi.org/10.1016/j.physc.2003.12.044
Machida, Masahiko, and Itakura, Mitsuhiro.
2004.
"Phase and amplitude fluctuations above the upper critical field in type II superconductors with short coherence length."
Netherlands.
https://doi.org/10.1016/j.physc.2003.12.044.
@misc{etde_20618681,
title = {Phase and amplitude fluctuations above the upper critical field in type II superconductors with short coherence length}
author = {Machida, Masahiko, and Itakura, Mitsuhiro}
abstractNote = {Recently, strong superconducting fluctuations above H{sub c2} have attracted many interests in lower-doped high-T{sub c} superconductors whose coherence length is very short. However, it is difficult to treat theoretically full fluctuations of the superconducting order parameter, i.e., the amplitude and the phase degree of freedom in the region. Therefore, we perform numerical simulations of the time-dependent Ginzburg-Landau equation with thermal fluctuations above H{sub c2} and clarify how the order parameter fluctuates. The simulation results reveal that vortices are well-defined objects even in a wide region above H{sub c2} although those fluctuates temporarily and spatially with finite life times.}
doi = {10.1016/j.physc.2003.12.044}
journal = []
issue = {1-2}
volume = {412-414}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Oct}
}
title = {Phase and amplitude fluctuations above the upper critical field in type II superconductors with short coherence length}
author = {Machida, Masahiko, and Itakura, Mitsuhiro}
abstractNote = {Recently, strong superconducting fluctuations above H{sub c2} have attracted many interests in lower-doped high-T{sub c} superconductors whose coherence length is very short. However, it is difficult to treat theoretically full fluctuations of the superconducting order parameter, i.e., the amplitude and the phase degree of freedom in the region. Therefore, we perform numerical simulations of the time-dependent Ginzburg-Landau equation with thermal fluctuations above H{sub c2} and clarify how the order parameter fluctuates. The simulation results reveal that vortices are well-defined objects even in a wide region above H{sub c2} although those fluctuates temporarily and spatially with finite life times.}
doi = {10.1016/j.physc.2003.12.044}
journal = []
issue = {1-2}
volume = {412-414}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Oct}
}