Abstract
The giant magnetostriction of the Bi2Sr2 – xLaxCuO6 + δ (La-Bi2201) single crystal at x = 0.8 is first detected for the low-temperature region. This composition is at the insulator/superconductor interface of the phase diagram of the La-Bi2201 high-temperature superconductor (HTS). The sample is heavily underdoped, nonsuperconducting La-Bi2201, and previously exhibited anomalous magnetically dependent negative thermal expansion at low temperatures. We observe the giant magnetostriction of ~10–4 known for superconducting HTS cuprates. The effect is observed in the temperature range from 6 to 70 K. The results point to the residual fluctuating superconductivity which is observed in HTS to high temperatures.
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Translated by A. Kazantsev
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Krynetskii, I.B., Moskvin, A.S., Martovitsky, V.P. et al. Giant Magnetostriction of Bi2Sr2 – xLaxCuO6 + δ (x = 0.8) Single Crystal. Bull. Lebedev Phys. Inst. 50, 48–51 (2023). https://doi.org/10.3103/S1068335623020033
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DOI: https://doi.org/10.3103/S1068335623020033