Magnetic Phase Diagram of Li_2(Pd_{1-x}Pt_x)_3B by AC Susceptometry
Magnetic Phase Diagram of Li_2(Pd_{1-x}Pt_x)_3B by AC Susceptometry
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DOI：
10.1103/physrevb.84.054521
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发表时间：
2011-05
影响因子：
3.7
通讯作者：
D. Peets;G. Eguchi;M. Kriener;S. Harada;Sk. Md. Shamsuzzamen;Y. Inada;G. Zheng;Y. Maeno
中科院分区：
文献类型：
--
作者：
D. Peets;G. Eguchi;M. Kriener;S. Harada;Sk. Md. Shamsuzzamen;Y. Inada;G. Zheng;Y. Maeno
确定了Li_2(Pd_{1-x}Pt_x)_3B的H-T相图和几个超导参数是阳离子取代x的函数。值得注意的是，相干长度可能与铂浓度呈线性关系。尽管超导配对态和能带结构发生了明显的根本变化，但H-T相图基本不变。讨论了H-T相图形状的不寻常方面。对于任何Pt含量，上临界场H_c2(0)都不是异常高的，可能是由于缺乏高载流子质量——在这种情况下，H_c2(0)的值不会作为新物理的探针。
The H-T phase diagram and several superconducting parameters for Li_2(Pd_{1-x}Pt_x)_3B have been determined as a function of cation substitution x. Notably, the coherence length may be linear in platinum concentration. Despite the superconducting pairing state and band structure apparently changing fundamentally, the H-T phase diagram is essentially unchanged. Unusual aspects of the shape of the H-T phase diagram are discussed. The upper critical field H_c2(0) is not anomalously high for any Pt content, likely due to an absence of high carrier masses - in such a case, the value of H_c2(0) would not serve as a probe for novel physics.