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Title: Temperature-dependent local exchange splitting in SrRuO{sub 3}

Abstract

Optical and magneto-optical data from the perovskite itinerant ferromagnet SrRuO{sub 3} are presented and compared to fully relativistic, local spin-density approximation band-structure calculations. We find that the basic features of the optical data are well described by the ferromagnetic band calculation. To test recent predictions that the ferromagnetic transition in thinspSrRuO{sub 3} is driven by long-wavelength longitudinal spin fluctuations, we track the temperature dependence of the O(2p){r_arrow}Ru(4d) interband transition which we observe in the magneto-optic conductivity. The absence of significant changes in the energy of this transition suggests that the ferromagnetic order is destroyed largely through transverse, not longitudinal, fluctuations of the ferromagnetic moment. We discuss the implications of these observations for the electronic structure of the ruthenium perovskites. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
 [1];  [2]; ; ; ; ; ; ;  [3];  [4];  [5];  [6]
  1. Edward Ginzton Laboratories, Stanford University, Stanford, California 94305 (United States)|[Materials Sciences Division, Lawrence Berkeley Laboratories, Berkeley, California 94720 (United States)
  2. Venture Business Laboratory, Kobe University, Rokkodai 1-1, Nada, Kobe 657 (Japan)
  3. Edward Ginzton Laboratories, Stanford University, Stanford, California 94305 (United States)
  4. Department of Physics, Faculty of Science, Kobe University, Rokkodai 1-1, Nada, Kobe 657 (Japan)
  5. Tamm Theory Department, P.N. Lebedev Physical Institute, Russian Academy of Sciences, 117924 Leninskii avenue 53, Moscow (Russia)
  6. Max-Planck Arbeitsgruppe Elektronensysteme, Technische Universitaet, D-01062 Dresden (Germany)
Publication Date:
OSTI Identifier:
686455
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 60; Journal Issue: 10; Other Information: PBD: Sep 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STRONTIUM COMPOUNDS; FERROMAGNETIC MATERIALS; STRONTIUM OXIDES; ELECTRONIC STRUCTURE; RUTHENIUM OXIDES; BAND THEORY; FERROMAGNETISM; MAGNETS; MAGNETO-OPTICAL EFFECTS; SPIN WAVES; TEMPERATURE DEPENDENCE; MAGNETIC MOMENTS; FLUCTUATIONS

Citation Formats

Dodge, J.S., Kulatov, E., Klein, L., Ahn, C.H., Reiner, J.W., Mieville, L., Geballe, T.H., Beasley, M.R., Kapitulnik, A., Ohta, H., Uspenskii, Y., and Halilov, S. Temperature-dependent local exchange splitting in SrRuO{sub 3}. United States: N. p., 1999. Web. doi:10.1103/PhysRevB.60.R6987.
Dodge, J.S., Kulatov, E., Klein, L., Ahn, C.H., Reiner, J.W., Mieville, L., Geballe, T.H., Beasley, M.R., Kapitulnik, A., Ohta, H., Uspenskii, Y., & Halilov, S. Temperature-dependent local exchange splitting in SrRuO{sub 3}. United States. doi:10.1103/PhysRevB.60.R6987.
Dodge, J.S., Kulatov, E., Klein, L., Ahn, C.H., Reiner, J.W., Mieville, L., Geballe, T.H., Beasley, M.R., Kapitulnik, A., Ohta, H., Uspenskii, Y., and Halilov, S. Wed . "Temperature-dependent local exchange splitting in SrRuO{sub 3}". United States. doi:10.1103/PhysRevB.60.R6987.
@article{osti_686455,
title = {Temperature-dependent local exchange splitting in SrRuO{sub 3}},
author = {Dodge, J.S. and Kulatov, E. and Klein, L. and Ahn, C.H. and Reiner, J.W. and Mieville, L. and Geballe, T.H. and Beasley, M.R. and Kapitulnik, A. and Ohta, H. and Uspenskii, Y. and Halilov, S.},
abstractNote = {Optical and magneto-optical data from the perovskite itinerant ferromagnet SrRuO{sub 3} are presented and compared to fully relativistic, local spin-density approximation band-structure calculations. We find that the basic features of the optical data are well described by the ferromagnetic band calculation. To test recent predictions that the ferromagnetic transition in thinspSrRuO{sub 3} is driven by long-wavelength longitudinal spin fluctuations, we track the temperature dependence of the O(2p){r_arrow}Ru(4d) interband transition which we observe in the magneto-optic conductivity. The absence of significant changes in the energy of this transition suggests that the ferromagnetic order is destroyed largely through transverse, not longitudinal, fluctuations of the ferromagnetic moment. We discuss the implications of these observations for the electronic structure of the ruthenium perovskites. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevB.60.R6987},
journal = {Physical Review, B: Condensed Matter},
number = 10,
volume = 60,
place = {United States},
year = {1999},
month = {9}
}