“Universality” of finite size effects in cumn and agmn spin-glasses

✍ Scribed by R. Stubi; J.A. Coven; D. Leslie-Pelecky; J. Bass

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 157 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(90)81079-4

✦ Synopsis

Recent measurements of the quasi-static spin-freezing temperature, T of thin Cu layers (x -0.04, 0.07, 0.14) in magnetron sputtered multilayer fs;mples (MS) o%tM% altesnate# with Cu or Si revealed two different apparently "universal" curves for the ratio T /Tf (Tf is the bulk freezing temperature for a given x) for CuMn/Cu and CuMn/Si MS. We s ow that cooling the substrates leaves the CuMn/Cu MS data unchanged, but moves the g CUM d

Si MS data closer to the "universal" curve for the CuMn/Cu MS. We show also that Tf/Tf for AgMn/Ag MS agrees with the CuMn/Cu MS "universal" curve.