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

Details 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

2011-05-31

arxiv.org/abs/1105.6281v1

Phys. Rev. B 84, 054521 (2011)

Physics

Condensed Matter

Superconductivity

5 pages, 6 figures

Scientific paper

10.1103/PhysRevB.84.054521

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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