Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111591
Title: Origin of Magnetoresistance Anomalies in Antiferromagnetic YBa2Cu3O6+x
Authors: Moskvin, A. S.
Panov, Yu. D.
Issue Date: 2002
Publisher: Elsevier BV
Citation: Moskvin A. S. Origin of Magnetoresistance Anomalies in Antiferromagnetic YBa2Cu3O6+x / A. S. Moskvin, Yu. D. Panov // Solid State Communications. — 2002. — Vol. 122. — Iss. 5. — P. 253-258.
Abstract: Specific d-wave angular dependence of the in-plane magnetoresistance in antiferromagnetic tetragonal YBa2Cu3O6+x (x ∼ 0.3) on the orientation of the external magnetic field within the (a,b) plane is assigned to the effective hole transport through the low-lying excited pure oxygen doublet O2peu state in CuO4 plaquette, rather than the ground b1g(dx(2)-y(2)) state. The external magnetic field is believed to determine the orientation of the strong exchange field for the spin-triplet b1geu:3Eu state of the hole CuO4 center and owing to the spin-orbit coupling results in a specific orbital polarization of the Eu doublet. Namely, this gives rise to the spatial d-wave like anisotropy of the hole transport. The experimental data allow to estimate the parameter of the effective spin Hamiltonian. © 2002 Elsevier Science Ltd. All rights reserved.
Keywords: CUPRATES
MAGNETORESISTANCE
SPIN-ORBITAL COUPLING
ANTIFERROMAGNETIC MATERIALS
CRYSTAL ORIENTATION
GROUND STATE
HAMILTONIANS
MAGNETIC ANISOTROPY
MAGNETORESISTANCE
PARAMETER ESTIMATION
TRANSPORT PROPERTIES
SPIN-ORBITAL COUPLINGS
YTTRIUM BARIUM COPPER OXIDES
URI: http://hdl.handle.net/10995/111591
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 0036569667
ISSN: 0038-1098
metadata.dc.description.sponsorship: The research described in this publication was made possible in part by CRDF grant No. REC-005. The authors acknowledge a partial support from the Russian Ministry of Education, grant E00-3.4-280, and Russian Foundation for Basic Researches, grant 01-02-96404. One of us (A.S.M.) would like to thank for hospitality Max-Planck Institute für Physik komplexer Systeme and Institut für Festkörper-und Werkstofforschung Dresden where part of this work was made.
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