Abstract
Magnetoresistance (MR) was measured in a La1.48Nd0.4Sr0.12CuO4 single crystal in perpendicular magnetic fields H up to 9 T in the region of the structural transition from the low-temperature orthorhombic (LTO) to low-temperature tetragonal (LTT) phase. The hysteretic MR exhibits discrete jumps or avalanches only when the transition is approached from the LTT phase, and only during the first field sweep. The properties of the hysteresis are found to be independent of the field driving rate. The results are consistent with the presence of magnetostructural domains coupled with the charge degrees of freedom.
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Acknowledgments
This work was partially supported by NSF Grant No. DMR-1307075 and by the NHMFL, which is supported by NSF/DMR-1157490 and the State of Florida. A part of this work was performed at the Aspen Center for Physics, which is supported by NSF grant PHY-1066293.
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Baity, P.G., Sasagawa, T. & Popović, D. Magnetotransport at the LTO-LTT Structural Transition in La1.48Nd0.4Sr0.12CuO4 . J Supercond Nov Magn 29, 3031–3034 (2016). https://doi.org/10.1007/s10948-016-3746-1
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DOI: https://doi.org/10.1007/s10948-016-3746-1