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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 | Abstract: | The 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 | Services: | Forum | Review | PDF | Favorites |
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