Original Paper

Quantum tunnelling and decoherence in nanomagnets

  1. Z. Gedik,
  2. Ö. Bozat

Article first published online: 12 JAN 2006

DOI: 10.1002/pssc.200563101

Issue

physica status solidi (c)

physica status solidi (c)

Volume 3, Issue 5, pages 1268–1270, May 2006

Additional Information

How to Cite

Gedik, Z. and Bozat, Ö. (2006), Quantum tunnelling and decoherence in nanomagnets. Phys. Status Solidi C, 3: 1268–1270. doi: 10.1002/pssc.200563101

Author Information

  1. Sabanci University, Faculty of Engineering and Natural Sciences, Tuzla 34956, Istanbul, Turkey

Publication History

  1. Issue published online: 9 MAY 2006
  2. Article first published online: 12 JAN 2006
  3. Manuscript Accepted: 12 DEC 2005
  4. Manuscript Received: 5 JUL 2005

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Keywords:

  • 03.65.Yz;
  • 03.67.–a;
  • 75.45.+j;
  • 85.35.–p

Abstract

Starting from the observation that at very low temperatures an isolated nanomagnet can be treated as an effective two-state system, we introduce a model to study quantum tunnelling and decoherence phenomena. We assume that the total spin of the magnet interacts with a spin bath. We show that depending upon the interaction strengths the molecule can exhibit tunnelling with or without decoherence. We also investigate the case where the spin-spin interaction is mediated by phonons. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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