Title: Quantum phase transition in Fe/Cr magnetic multilayers
Authors: Aliev, FG
Samper, PM
Moshchalkov, Victor
Bruynseraede, Yvan #
Issue Date: Jul-2000
Publisher: Elsevier science bv
Series Title: Physica B vol:284 Part 2 pages:1307-1308
Abstract: Spin-dependent electron transport properties have been studied in magnetic multilayers by magnetic field tuning through the orientation transition from a ferromagnetic (FM) into an antiferromagnetic (AF) state. We find that in the [Fe/Cr](10) multilayers the resistivity ps associated with the AF scattering varies in the temperature interval below 100 K as rho(S)(T) = rho(S)(0) - AT(alpha) with 0.5 < alpha(H) less than or equal to 2. As T --> 0 K, the antiferromagnetic contribution rho(S) saturates except for a narrow magnetic field region near II = H-S(0), which tunes the AF transition temperature down to 0 K. For H > 1.2H(S)(0), the spin-dependent part in resistivity depends exponentially on temperature above 2 K, indicating a possible spin gap from localized antiferromagnetic correlations. (C) 2000 Elsevier Science B.V. All rights reserved.
ISSN: 0921-4526
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physics and Astronomy - miscellaneous
# (joint) last author

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