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Zeitschrift für Physik B Condensed Matter

, Volume 96, Issue 3, pp 297–303 | Cite as

Magnetic resonances in one-dimensional spin systems NENP and NINO

  • M. Sieling
  • W. Palme
  • B. Lüthi
Article

Abstract

We present Electron-Spin-Resonance experiments in the frequency range 35–420 GHz in magnetic fields up to 14 T and with temperatures down to 1.5 K. The quasi-onedimensionalS=1 Spin Systems NENP and NINO exhibit similar resonance-modes, which can be associated with transitions between excited states atq=π and excitations from the groundstate. Groundstateexcitation can be explained with regard to a transverse staggered field due to inequivalent Ni2+-sites along the chains. Several features are discussed like polarisation-and temperature dependence of line-intensity and the angular and temperature-dependence of resonance-field.

PACS

75.10.Jm 76.30.-v 

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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • M. Sieling
    • 1
  • W. Palme
    • 1
  • B. Lüthi
    • 1
  1. 1.Physikalisches InstitutUniversität FrankfurtFrankfurtGermany

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