{sup 63,65}Cu indirect spin-spin coupling in La{sub 1.85}Sr{sub 0.15}CuO{sub 4}
- AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974 (United States)
Measurements of the nuclear spin-echo decay time constant {ital T}{sub 2{ital G}} for both {sup 63}Cu and {sup 65}Cu in La{sub 1.85}Sr{sub 0.15}CuO{sub 4} are presented for sample temperatures ranging from 100 to 300 K. Using methods developed recently, these measurements are corrected for the effects of {ital T}{sub 1} modulation and of spin-spin flip-flop transitions. The results are then compared with predictions based on Kramers-Kronig integration of recent neutron data, and extrapolations thereof, for {chi}{sup {double_prime}}({ital q}{searrow},{omega}). Using the foregoing results and calculated corrections for YBa{sub 2}Cu{sub 3}O{sub 7}, we also discuss the evaluation of these systems in terms of quantum disordered ({ital z}=1) vs overdamped ({ital z}=2) behavior in the phase diagram proposed by Sokol and Pines. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 279053
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 53, Issue 10; Other Information: PBD: Mar 1996
- Country of Publication:
- United States
- Language:
- English
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