{ "id": "cond-mat/0304493", "version": "v2", "published": "2003-04-22T15:58:17.000Z", "updated": "2003-05-08T15:10:41.000Z", "title": "Dynamic scaling in spin glasses", "authors": [ "C. Pappas", "F. Mezei", "G. Ehlers", "P. Manuel", "I. A. Campbell" ], "comment": "5 pages and 4 figures", "journal": "Phys. Rev. B 68, 054431 (2003)", "doi": "10.1103/PhysRevB.68.054431", "categories": [ "cond-mat.dis-nn", "cond-mat.stat-mech" ], "abstract": "We present new Neutron Spin Echo (NSE) results and a revisited analysis of historical data on spin glasses, which reveal a pure power-law time decay of the spin autocorrelation function $s(Q,t) = S(Q,t)/S(Q)$ at the glass temperature $T_g$, each power law exponent being in excellent agreement with that calculated from dynamic and static critical exponents deduced from macroscopic susceptibility measurements made on a quite different time scale. It is the first time that this scaling relation involving exponents of different physical quantities determined by completely independent experimental methods is stringently verified experimentally in a spin glass. As spin glasses are a subgroup of the vast family of glassy systems also comprising structural glasses, other non-crystalline systems living matter the observed strict critical scaling behaviour is important. Above the phase transition the strikingly non-exponential relaxation, best fitted by the Ogielski (power-law times stretched exponential) function, appears as an intrinsic, homogeneous feature of spin glasses.", "revisions": [ { "version": "v2", "updated": "2003-05-08T15:10:41.000Z" } ], "analyses": { "keywords": [ "spin glasses", "dynamic scaling", "pure power-law time decay", "non-crystalline systems living matter", "power-law times stretched exponential" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "TeX", "pages": 5, "language": "en", "license": "arXiv", "status": "editable" } } }