Nuclear exchange spin couplings in metal trihydrides: A tight binding approximation
Hiller, Eric M. ; Harris, Robert A.
College Park, Md. : American Institute of Physics (AIP)
Published 1993
College Park, Md. : American Institute of Physics (AIP)
Published 1993
| ISSN: |
1089-7690
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|---|---|
| Source: |
AIP Digital Archive
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| Topics: |
Physics
Chemistry and Pharmacology
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| Notes: |
A multiband tight binding model of the metal trihydrides, including on-site repulsion and exchange, is examined. By linearly coupling the system to a harmonic bath we show that the multiband model yields an effective temperature dependent Heisenberg spin Hamiltonian. This system exhibits a temperature dependent competition between ferro- and antiferromagnetic exchange spin couplings. The resulting spin spectrum is consistent with observed anomalous isotope dependent metal trihydride H-N.M.R. spectra.
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| Type of Medium: |
Electronic Resource
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| URL: |