Spin susceptibility in the La2xSrxCuO4 system from underdoped to overdoped regimes

Y.-Q. Song, Mark A. Kennard, K. R. Poeppelmeier, and W. P. Halperin
Phys. Rev. Lett. 70, 3131 – Published 17 May 1993
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Abstract

Cu63 NMR Knight shifts were measured on La1xSrxCuO4 for x=0.10, 0.16, and 0.20 in the normal and superconducting states. These results, combined with magnetic susceptibility measurements, allow the separation of the carrier spin and orbital contributons to the susceptibility. At temperatures just above the superconducting transition, the conduction electron spin susceptibility increases dramatially with strontium doping. The analysis of the Knight shift at low temperature suggests that the spin susceptibility is zero and the superconducting state is a spin singlet.

  • Received 2 October 1992

DOI:https://doi.org/10.1103/PhysRevLett.70.3131

©1993 American Physical Society

Authors & Affiliations

Y.-Q. Song, Mark A. Kennard, K. R. Poeppelmeier, and W. P. Halperin

  • Department of Physics and Astronomy, Materials Research Center and Science and Technology Center for Superconductivity, Northwestern University, Evanston, Illinois 60208
  • Department of Chemistry, Materials Research Center and Science and Technology Center for Superconductivity, Northwestern University, Evanston, Illinois 60208

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Vol. 70, Iss. 20 — 17 May 1993

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