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          Institute: MPI für Physik Komplexer Systeme     Collection: Superconductivity and magnetism     Display Documents



ID: 478568.0, MPI für Physik Komplexer Systeme / Superconductivity and magnetism
Heisenberg dimer single molecule magnets in a strong magnetic field
Authors:Efremov, D. V.; Klemm, R. A.
Language:English
Date of Publication (YYYY-MM-DD):2002-11-01
Title of Journal:Physical Review B
Journal Abbrev.:Phys. Rev. B
Volume:66
Issue / Number:17
Sequence Number of Article:174427
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We calculate the static and dynamic properties of single crystal, single molecule magnets consisting of equal spin S=1/2 or 5/2 dimers. The spins in each dimer interact with each other via the Heisenberg exchange interaction and with the magnetic induction B via the Zeeman interaction, and interdimer interactions are negligible. For antiferromagnetic couplings, the static magnetization and specific heat exhibit interesting low-temperature T and strong B quantum effects. We calculate the frequency spectrum of the Fourier transform of the real part of the time autocorrelation function C-11(t) for arbitrary T, B, and compare our results with those obtained for classical spins. We also calculate the inelastic neutron magnetic dynamical structure factor S(q,omega) at arbitrary T, B.
External Publication Status:published
Document Type:Article
Communicated by:Heidrun Näther
Affiliations:MPI für Physik Komplexer Systeme/Visitors Program
External Affiliations:Max Planck Inst Phys Komplexer Syst, Nothnitzer Str 38, D-01187; Dresden, Germany; Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
Identifiers:ISI:000179611700071
ISSN:1098-0121
URL:http://ojps.aip.org/getabs/servlet/GetabsServlet?p...
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