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Volumn 78, Issue 13, 2008, Pages

Anomalous expansion and phonon damping due to the Co spin-state transition in RCoO3 (R=La, Pr, Nd, and Eu)

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EID: 54449085928     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.78.134402     Document Type: Article
Times cited : (48)

References (45)
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    • One may speculate that the low-temperature maximum of κ is also influenced by twinning. All these single crystals are twinned, but it seems plausible that the average size of the twin domains increases from LaCoO3 to EuCoO3 because the deviation from the cubic symmetry increases. However, the observed correlation between κmax and the magnetic impurity concentration for the different LaCoO3 crystals makes it rather unlikely to explain the different low-temperature maxima of κ in terms of different domain sizes.
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    • We also mention that our attempts to describe the additional damping of κ due to the spin-state transition of LaCoO3 by a resonant scattering process completely failed.
    • We also mention that our attempts to describe the additional damping of κ due to the spin-state transition of LaCoO3 by a resonant scattering process completely failed.


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