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29 March 2024
 
  » arxiv » cond-mat/0005228

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Low-temperature specific heat of La0.78Pb0.22MnO3-d manganite
L. Ghivelder ; R.S. Freitas ; R.E. Rapp ; F.A.B. Chaves ; M. Gospodinov ; M.A. Gusmao ;
Date 14 May 2000
Subject Strongly Correlated Electrons; Materials Science | cond-mat.str-el cond-mat.mtrl-sci
Affiliation IF-UFRJ, Rio de Janeiro, Brazil, Bulgarian Academy of Sciences, Sofia, IF-UFRGS, Porto-Alegre, Brazil
AbstractThe specific heat of the perovskite manganite La0.78Pb0.22MnO3-d was measured from 0.5 to 25 K. The results yield values of the electronic density of states, the Debye temperature, and the spin-wave stiffness constant of the compound. The magnetic contribution was found to be consistent with the existence of a gap in the spin-wave spectrum, and a phonon term in T^5 was needed to fit the data.
Source arXiv, cond-mat/0005228
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