EVIDENCE FOR FLUX-LATTICE MELTING AND A DIMENSIONAL CROSSOVER IN SINGLE-CRYSTAL BI2.15SR1.85CACU2O8+DELTA FROM MUON SPIN ROTATION STUDIES
EVIDENCE FOR FLUX-LATTICE MELTING AND A DIMENSIONAL CROSSOVER IN SINGLE-CRYSTAL BI2.15SR1.85CACU2O8+DELTA FROM MUON SPIN ROTATION STUDIES
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DOI：
10.1103/physrevlett.71.3862
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发表时间：
1993-12-06
影响因子：
8.6
通讯作者：
TARNAWSKI, Z
中科院分区：
文献类型：
--
作者：
LEE, SL;ZIMMERMANN, P;TARNAWSKI, Z
用μ子自旋旋转技术测量了Bi_（2.15）Sr_（1.85）CaCu_（2 O_（8 + δ）单晶混合态的微观磁场分布。研究的线形作为温度和磁场的函数给出了证据的磁通-晶格结构的突变，这是由于存在的磁通-晶格熔化线的B-T相图。此外，数据表明存在一个交叉领域以上的通量结构是更多的二维性质。
The microscopic magnetic field distribution in the mixed state of single-crystal Bi2.15Sr1.85CaCu2O8+delta has been measured using the muon spin rotation technique. A study of the line shapes as a function of temperature and magnetic field gives evidence for an abrupt change of flux-lattice structure which is attributed to the presence of a flux-lattice melting line in the B-T phase diagram. In addition, the data suggest the existence of a crossover field above which the flux structure is more 2D in nature.