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Anomalous Phonon Li...
Anomalous Phonon Lifetime Shortening in Paramagnetic CrN Caused by Spin-Lattice Coupling: A Combined Spin and Ab Initio Molecular Dynamics Study
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- Stockem, Irina (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Max Planck Inst Eisenforsch GmbH, Germany
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- Bergman, Anders (author)
- Univ Versailles, France; CEA, France
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- Glensk, Albert (author)
- Max Planck Inst Eisenforsch GmbH, Germany
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- Hickel, Tilmann (author)
- Max Planck Inst Eisenforsch GmbH, Germany
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- Koermann, Fritz (author)
- Max Planck Inst Eisenforsch GmbH, Germany; Delft Univ Technol, Netherlands
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- Grabowski, Blazej (author)
- Max Planck Inst Eisenforsch GmbH, Germany
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- Neugebauer, Joerg (author)
- Max Planck Inst Eisenforsch GmbH, Germany
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- Alling, Björn (author)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Max Planck Inst Eisenforsch GmbH, Germany
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(creator_code:org_t)
- AMER PHYSICAL SOC, 2018
- 2018
- English.
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In: Physical Review Letters. - : AMER PHYSICAL SOC. - 0031-9007 .- 1079-7114. ; 121:12
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We study the mutual coupling of spin fluctuations and lattice vibrations in paramagnetic CrN by combining atomistic spin dynamics and ab initio molecular dynamics. The two degrees of freedom are dynamically coupled, leading to nonadiabatic effects. Those effects suppress the phonon lifetimes at low temperature compared to an adiabatic approach. The dynamic coupling identified here provides an explanation for the experimentally observed unexpected temperature dependence of the thermal conductivity of magnetic semiconductors above the magnetic ordering temperature.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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