Speed limit to the Abrikosov lattice in mesoscopic superconductors

被引：47

作者：

Grimaldi, G. ^{[1
]}

Leo, A. ^{[1
,2
]}

Sabatino, P. ^{[1
,2
]}

Carapella, G. ^{[1
,2
]}

Nigro, A. ^{[1
,2
]}

Pace, S. ^{[1
,2
]}

Moshchalkov, V. V. ^{[3
,4
]}

Silhanek, A. V. ^{[5
]}

机构：

[1] CNR SPIN Salerno, I-84084 Fisciano, SA, Italy

[2] Univ Salerno, Phys Dept ER Caianiello, I-84084 Fisciano, SA, Italy

[3] Katholieke Univ Leuven, INPAC, B-3001 Leuven, Belgium

[4] Katholieke Univ Leuven, Nanoscale Superconduct & Magnetism Grp, B-3001 Leuven, Belgium

[5] Univ Liege, Dept Phys, B-4000 Sart Tilman Par Liege, Belgium

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 02期

关键词：

FLUX-FLOW INSTABILITY; STATE; PHASE;

D O I：

10.1103/PhysRevB.92.024513

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the instability of the superconducting state in a mesoscopic geometry for the low pinning material Mo3Ge characterized by a large Ginzburg-Landau parameter. We observe that in the current-driven switching to the normal state from a nonlinear region of the Abrikosov flux flow, the mean critical vortex velocity reaches a limitingmaximum velocity as a function of the appliedmagnetic field. Based on time-dependent Ginzburg-Landau simulations, we argue that the observed behavior is due to the high-velocity vortex dynamics confined on a mesoscopic scale. We build up a general phase diagram which includes all possible dynamic configurations of the Abrikosov lattice in a mesoscopic superconductor.

引用

页数：6

共 40 条

[1] Nucleation and growth of the normal phase in thin superconducting strips [J].