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Electron localization into spin-polaron state in MnSi
Physical Review B
  • Vyacheslav G. Storchak, Kurchatov Institute
  • Jess H. Brewer, University of British Columbia
  • Roger L. Lichti, Texas Tech University
  • Thomas A. Lograsso, Iowa State University
  • Deborah L. Schlagel, Iowa State University
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Strong electron localization into a bound state has been found in both paramagnetic and ferromagnetic states of the transition metal compound MnSi by muon spin-rotation spectroscopy in magnetic fields up to 7 T and from 2 K to room temperature. This bound state, with a characteristic radius R≈0.4 nm and net spin S=24±2, is consistent with confinement of the electron’s wave function within roughly one lattice cell of MnSi and is suggested to be a spin polaron. Such spin polarons may form due to a strong exchange interaction between itinerant electrons and the magnetic electrons of Mn ions of the same 3d type; as such, they might affect the peculiar electronic and magnetic properties of MnSi.

This article is from Physical Review B 83 (2011): 410404(R), doi:10.1103/PhysRevB.83.140404.

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American Physical Society
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Vyacheslav G. Storchak, Jess H. Brewer, Roger L. Lichti, Thomas A. Lograsso, et al.. "Electron localization into spin-polaron state in MnSi" Physical Review B Vol. 83 Iss. 14 (2011) p. 140404(R)
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