Infrared Absorption from Charge Density Waves in Magnetic Manganites

P. Calvani, G. De Marzi, P. Dore, S. Lupi, P. Maselli, F. D’Amore, S. Gagliardi, Sang-Wook Cheong

Research output: Contribution to journalArticle

85 Scopus citations

Abstract

The infrared absorption of charge density waves coupled to a magnetic background is first observed in two manganites La1-xCaxMnO3 with x = 0.5 and x = 0.67. In both cases a BCS-like gap 2Δ\(T\), which for x = 0.5 follows the hysteretic ferromagnetic-antiferromagnetic transition, fully opens at a finite T0<TN, with 2Δ\(T0\)/kBTc∼=5. These results may also explain the unusual coexistence of charge ordering and ferromagnetism in La0.5Ca0.5MnO3.

Original languageEnglish (US)
Pages (from-to)4504-4507
Number of pages4
JournalPhysical review letters
Volume81
Issue number20
DOIs
StatePublished - Nov 16 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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