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H-linear magnetoresistance in the T2 resistivity regime of overdoped infinite-layer nickelate La1xSrxNiO2
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H-linear magnetoresistance in the T2 resistivity regime of overdoped infinite-layer nickelate La1xSrxNiO2

Yong-Cheng Pan, Tommy Kotte, Toni Helm, Motoki Osada, Atsushi Tsukazaki 和 Yu-Te Hsu
Physical review. B, 卷.114(2)
01/07/2026
Web of Science ID: WOS:001830586600001

摘要

Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Science & Technology Materials Science Physical Sciences Physics Technology
We report a systematic magnetotransport study on high-crystallinity La1-xSrxNiO2 (LSNO) thin films with x = 0.20 - 0.24. By conducting pulsed-field transport experiment up to 62 T, we reveal two salient features of the normal-state transport in overdoped LSNO thin films: (1) the magnetoresistance does not follow Kohler's rule but exhibits an H-linear behavior in the high-H/T limit and (2) the normal-state rho(T ) below 30 K consistently follows a T2 behavior across the overdoped regime. Our results demonstrate a coexistence of H-linear magnetoresistance and T2 resistivity in a model unconventional superconductor and provide information on the transport characteristics of the normal ground state that hosts superconductivity in infinite-layer nickelates.

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