3D-melting features of the irreversibility line in overdoped Bi2Sr2CuO6 at ultra-low temperature and high magnetic field
Abstract
We have measured the irreversible magnetization of an overdoped Bi2Sr2CuO6 single crystal up to B=28 T and down to T=60 mK, and extracted the irreversibility line B irr(T): the data can be interpreted in the whole temperature range as a 3D-anisotropic vortex lattice melting line with Lindemann number c L=0.13. We also briefly discuss the applicability of alternative models such as 2D- and quantum melting, and the connection with magnetoresistance experiments.
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