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arXiv · 1105.6281

Magnetic Phase Diagram of Li_2(Pd_{1-x}Pt_x)_3B by AC Susceptometry

D. C. Peets·G. Eguchi·M. Kriener·S. Harada·Sk. Md. Shamsuzzamen·Y. Inada·G. -Q. Zheng·Y. Maeno
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Abstract

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.

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D. C. Peets, G. Eguchi, M. Kriener, S. Harada, Sk. Md. Shamsuzzamen, Y. Inada, G. -Q. Zheng, Y. Maeno. 2011-05-31. Magnetic Phase Diagram of Li_2(Pd_{1-x}Pt_x)_3B by AC Susceptometry. https://doi.org/10.1103/physrevb.84.054521

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