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Isotropic negative magnetoresistance in La sub 2 minus x Sr sub x CuO sub 4+ y (US)

Journal Article · · Physical Review, B: Condensed Matter; (USA)
; ; ;  [1];  [2]
  1. Department of Physics and Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (US)
  2. NTT Applied Electronics Laboratory, NTT Corporation, Tokai, Ibaraki 319-11, (Japan)
Measurements are reported of the magnetoresistance of thoroughly characterized single crystals of La{sub 2{minus}{ital x}}Sr{sub {ital x}}CuO{sub 4+{ital y}} with 0.02{le}{ital x}{le}0.1. Above the superconducting critical temperature, the conductance of the CuO{sub 2} layers increases logarithmically with temperature at low {ital T}. However, the magnetoresistance is isotropic and negative, inconsistent with coherent backscattering or conventional interaction effects, suggesting that spin scattering limits the conductance.
OSTI ID:
5775799
Journal Information:
Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 44:1; ISSN PRBMD; ISSN 0163-1829
Country of Publication:
United States
Language:
English