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Resistive upper critical field of Tl2Ba2CuO6 at low temperatures and high magnetic fields

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Citation

Mackenzie, A. P., Julian, S., Lonzarich, G., Carrington, A., Hughes, S., Liu, R., et al. (1993). Resistive upper critical field of Tl2Ba2CuO6 at low temperatures and high magnetic fields. Physical Review Letters, 71(8), 1238-1241. doi:10.1103/PhysRevLett.71.1238.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-E779-2
Abstract
The resistive upper critical field of overdoped single crystals of Tl2Ba2CuO6 has been measured from the zero field transition temperature T(c)(0) (approximately 20 K) to temperatures as low as 12 mK, corresponding to less than 0.001T(c)(0). In sharp contrast to the predictions of standard theories of superconductivity, the critical field is found to rise steeply with positive curvature as the temperature is reduced, and no sign of saturation is observed down to the lowest temperatures reached.