Skip to content

Field-induced thermal metal-to-insulator transition in underdoped LSCO

D. G. Hawthorn, R. W. Hill, F. Ronning, Mike Sutherland, Etienne Boaknin, M. A. Tanatar, Johnpierre Paglione, S. Wakimoto, H. Zhang, Louis Taillefer

cond-mat.supr-conarXiv:cond-mat/0304495

Abstract

The transport of heat and charge in cuprates was measured in undoped and heavily-underdoped single crystal La2-xSrxCuO4+delta (LSCO). In underdoped LSCO, the thermal conductivity is found to decrease with increasing magnetic field in the T --> 0 limit, in striking contrast to the increase observed in all superconductors, including cuprates at higher doping. The suppression of superconductivity with magnetic field shows that a novel thermal metal-to-insulator transition occurs upon going from the superconducting state to the field-induced normal state.

Create a lesson