Real space observation of spin frustration in Cr on a triangular lattice

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Autor/in:
Erscheinungsjahr:
2010
Medientyp:
Text
Schlagworte:
  • Scanning tunneling microscopy
  • Spin polarization
  • Spin-polarized scanning
  • Magnetic Anisotropy
  • Magnetization
  • Magnetism
  • Scanning tunneling microscopy
  • Spin polarization
  • Spin-polarized scanning
  • Magnetic Anisotropy
  • Magnetization
  • Magnetism
Beschreibung:
  • Using spin-polarized scanning tunneling microscopy (SP-STM), we observe spin frustration in one monolayer Cr on the triangular lattice of the Pd(111) surface. Our STM measurements demonstrate pseudomorphic growth of the first Cr layer on Pd(111) without intermixing. Using SP-STM in the constant current mode, we observe three different types of images depending on the tip magnetization indicative of a noncollinear (√3×√3) magnetic superstructure with an angle of 120° between moments of nearest-neighbor Cr atoms. The 120° Néel ground state of Cr/Pd(111) and the SP-STM images are explained based on our first-principles calculations. © 2010 The American Physical Society.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/5cb5f064-9a8f-4ee6-954a-947b060f019e