SPIN DYNAMICS IN THE ND2-XCEXCUO4 SYSTEM - ESTIMATION OF THE RATE OF SPIN FLUCTUATIONS

Authors
CHECHERSKY V KOPELEV NS NATH A PENG JL GREENE RL O B LARKIN MI MARKERT JT
Citation
V. Chechersky et al., SPIN DYNAMICS IN THE ND2-XCEXCUO4 SYSTEM - ESTIMATION OF THE RATE OF SPIN FLUCTUATIONS, Physical review. B, Condensed matter, 54(22), 1996, pp. 16254-16258
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
22
Year of publication
1996
Pages
16254 - 16258
Database
ISI
SICI code
0163-1829(1996)54:22<16254:SDITNS>2.0.ZU;2-7
Abstract
We estimate the rate of fluctuations as 10(11) sec(-1) in the normal s tate of Nd1.85Ce0.15CuO4 assuming that the spin fluctuations are the p rimary source of relaxation phenomena affecting the shape of the Mossb auer peaks. In the oxygenated and nonsuperconducting compound, the mag netic order is quasistatic rather than static as is generally believed . The spin clusters fluctuate at an approximate rate of 10(9) sec(-1) below the Neel temperature. These findings may bear on the possible co rrelation between antiferromagnetic spin fluctuations and superconduct ivity.