Vortex lattice melting of a NbSe2 single grain probed by ultrasensitive cantilever magnetometry

被引：3
|
作者：
Bossoni, L. [1 ,2 ]
Carretta, P. [1 ]
Poggio, M. [3 ]
机构：
[1] Univ Pavia CNISM, Dept Phys, I-27100 Pavia, Italy
[2] Univ Roma Tre CNISM, Dept Phys, I-00146 Rome, Italy
[3] Univ Basel, Dept Phys, CH-4056 Basel, Switzerland
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 18期
关键词：
CRYSTAL YBA2CU3O7; FLUX LINES; VORTICES; DYNAMICS; MOTION; NMR; PHASE; SUPERCONDUCTIVITY; TRANSITION; FORCE;
D O I：
10.1063/1.4874979
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using dynamic cantilever magnetometry, we study the vortex lattice and its corresponding melting transition in a micrometer-size crystallite of superconducting NbSe2. Measurements of the cantilever resonance frequency as a function of magnetic field and temperature respond to the magnetization of the vortex-lattice. The cantilever dissipation depends on thermally activated vortex creep motion, whose pinning energy barrier is found to be in good agreement with transport measurements on bulk samples. This approach reveals the phase diagram of the crystallite, and is applicable to other micrometer-or nanometer-scale superconducting samples. (C) 2014 AIP Publishing LLC.
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页数：4
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