Pauli-limit upper critical field of high-temperature superconductor La(1.84)Sr(0.16)CuO(4)

The upper critical field of a cuprate high-temperature superconductor, La(1.84)Sr(0.16)CuO(4), was investigated by high-frequency self-resonant contactless electrical conductivity measurements in magnetic fields up to 102 T. An irreversible transition was observed at 85 T (T = 4.2 K), defined as the...

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Detalles Bibliográficos
Autores principales: Nakamura, Daisuke, Adachi, Tadashi, Omori, Keisuke, Koike, Yoji, Takeyama, Shojiro
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6861275/
https://www.ncbi.nlm.nih.gov/pubmed/31740679
http://dx.doi.org/10.1038/s41598-019-52973-1
Descripción
Sumario:The upper critical field of a cuprate high-temperature superconductor, La(1.84)Sr(0.16)CuO(4), was investigated by high-frequency self-resonant contactless electrical conductivity measurements in magnetic fields up to 102 T. An irreversible transition was observed at 85 T (T = 4.2 K), defined as the upper critical field. The temperature-dependent upper critical field was argued on the basis of the Werthamer-Helfand-Hohenberg theory. The Pauli-limiting pair-breaking process with a small contribution of the spin-orbit coupling explained the first-order phase transition exhibiting a hysteresis observed at low temperatures.

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