Probing Commensurate Ground States of Josephson Vortex in Layered Superconductors

被引：0

作者：

Takahashi, Y. ^{[1
,2
]}

Luo, M. -B. ^{[3
]}

Nishizaki, T. ^{[4
,5
]}

Kobayashi, N. ^{[4
]}

Hu, X. ^{[1
,2
]}

机构：

[1] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3058571, Japan

[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China

[4] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[5] Kyushu Sangyo Univ, Dept Elect Engn & Informat Technol, Fukuoka 8138503, Japan

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2014年 / 14卷 / 04期

关键词：

Josephson Vortex State; Vortex Dynamics; Cuprate Superconductors; T-C SUPERCONDUCTORS; PHASE-DIAGRAM; TRANSITION; TRANSPORT; CROSSOVER; VORTICES; PARALLEL; PLANE;

D O I：

10.1166/jnn.2014.8635

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Because of the commensurability condition between the vortex lattice constant determined by external magnetic field and the nano-scale layered structure, interlayer Josephson vortices (JVs) in high-T-c cuprate superconductors can take various configurations. We have simulated with Langevin scheme the in-plane flux-flow dynamics of JVs subject to point-like pinning centers. Oscillation in resistivity is found with the applied magnetic field, where the resistivity peaks occur around commensurate JV configurations. We have also measured the resistivity experimentally using single crystals of underdoped YBa2Cu3Oy with the anisotropy parameter gamma similar or equal to 50. A unique JV lattice has been detected for the first time.

引用

页码：2859 / 2863

页数：5

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