PROBING SPIN DYNAMICS BY CONDUCTANCE FLUCTUATIONS AND NOISE IN MESOSCOPIC SPIN-GLASS

Authors
JAROSZYNSKI J DIETL T WROBEL J KARCZEWSKI G WOJTOWICZ T GRABECKI G SAWICKI M PAPIS E KAMINSKA E PIOTROWSKA A
Citation
J. Jaroszynski et al., PROBING SPIN DYNAMICS BY CONDUCTANCE FLUCTUATIONS AND NOISE IN MESOSCOPIC SPIN-GLASS, Physica. B, Condensed matter, 251, 1998, pp. 500-503
Citations number
18
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
251
Year of publication
1998
Pages
500 - 503
Database
ISI
SICI code
0921-4526(1998)251:<500:PSDBCF>2.0.ZU;2-6
Abstract
Millikelvin magnetoconductance studies performed in mesoscopic spin-gl ass n(+)-Cd1-xMnxTe wires reveal strong effects of Mn spins upon unive rsal conductance fluctuations. In particular, scattering potential of the frozen spins leads to magnetic and thermal irreversibilities of th e fluctuation patterns. Slowly fluctuating spins, on the other hand, a re an efficient source of conductance noise providing a real-time prob e of spin dynamics. (C) 1998 Elsevier Science B.V. All rights reserved .