Effects of phonon hardening on the polaron transport in colossal magnetoresistive manganites
SCIE
SCOPUS
- Title
- Effects of phonon hardening on the polaron transport in colossal magnetoresistive manganites
- Authors
- Yu, UJ; Min, BI; Lee, JD
- Date Issued
- 2000-01-01
- Publisher
- AMERICAN PHYSICAL SOC
- Abstract
- It is well established that transport properties of colossal magnetoresistive manganites can be qualitatively explained by the small polaron model incorporating the double-exchange interaction. We have improved this model by taking into account effects of phonon frequency hardening below T-c. It is found that the effects are significant in that the resistivity drop for T < T-c becomes much steeper and the magnetoresistance is enhanced substantially at T-c in accord with experiments. This model is applied to understand the evolution of T-c with the chemical pressure in R(0.7)A(0.3)MnO(3) series.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/12058
- DOI
- 10.1103/PhysRevB.61.84
- ISSN
- 1098-0121
- Article Type
- Article
- Citation
- PHYSICAL REVIEW B, vol. 61, no. 1, page. 84 - 87, 2000-01-01
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