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Observation of a Devil's Staircase in the Novel Spin-Valve System SrCo6O11.
Matsuda, T; Partzsch, S; Tsuyama, T; Schierle, E; Weschke, E; Geck, J; Saito, T; Ishiwata, S; Tokura, Y; Wadati, H.
  • Matsuda T; Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan.
  • Partzsch S; Leibniz Institute for Solid State and Materials Research IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany.
  • Tsuyama T; Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan.
  • Schierle E; Institute for Solid State Physics, University of Tokyo, Kashiwanoha 5-1-5, Chiba 277-8581, Japan.
  • Weschke E; Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany.
  • Geck J; Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 15, 12489 Berlin, Germany.
  • Saito T; Leibniz Institute for Solid State and Materials Research IFW Dresden, Helmholtzstrasse 20, 01069 Dresden, Germany.
  • Ishiwata S; Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
  • Tokura Y; Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan.
  • Wadati H; Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan.
Phys Rev Lett ; 114(23): 236403, 2015 Jun 12.
Article en En | MEDLINE | ID: mdl-26196810
ABSTRACT
Using resonant soft-x-ray scattering as a function of both temperature and magnetic field, we reveal a large number of almost degenerate magnetic orders in SrCo6O11. The Ising-like spins in this frustrated material in fact exhibit a so-called magnetic devil's staircase. It is demonstrated how a magnetic field induces transitions between different microscopic spin configurations, which is responsible for the magnetoresistance of SrCo6O11. This material therefore constitutes a unique combination of a magnetic devil's staircase and spin-valve effects, yielding a novel type of magnetoresistance system.
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Banco de datos: MEDLINE Idioma: En Año: 2015 Tipo del documento: Article
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Banco de datos: MEDLINE Idioma: En Año: 2015 Tipo del documento: Article