Electronic band structure study of colossal magnetoresistance in Tl2Mn2O7

Dong Kyun Seo, M. H. Whangbo, M. A. Subramanian

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The electronic structure of Tl2Mn2O7 was examined by performing tight binding band calculations. The overlap between the Mnt2g- and Tl 6s-block bands results in a partial filling of the Tl 6s-block bands. The associated Fermi surface consists of 12 cigar-shape electron pockets with each electron pocket about 1/1000 of the first Brillouin zone in size. The Tl 6s-block bands have orbital contributions from the Mn atoms, and the carrier density is very low. These are important for the occurrence of a colossal magnetoresistance in Tl2Mn2O7.

Original languageEnglish
Pages (from-to)417-421
Number of pages5
JournalSolid State Communications
Volume101
Issue number6
Publication statusPublished - Feb 1997

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Colossal magnetoresistance
Band structure
Fermi surface
Electrons
electronics
Tobacco Products
Electronic structure
Carrier concentration
Atoms
Brillouin zones
Fermi surfaces
electrons
occurrences
electronic structure
orbitals
atoms

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Electronic band structure study of colossal magnetoresistance in Tl2Mn2O7 . / Seo, Dong Kyun; Whangbo, M. H.; Subramanian, M. A.

In: Solid State Communications, Vol. 101, No. 6, 02.1997, p. 417-421.

Research output: Contribution to journalArticle

Seo, DK, Whangbo, MH & Subramanian, MA 1997, 'Electronic band structure study of colossal magnetoresistance in Tl2Mn2O7 ', Solid State Communications, vol. 101, no. 6, pp. 417-421.
Seo, Dong Kyun ; Whangbo, M. H. ; Subramanian, M. A. / Electronic band structure study of colossal magnetoresistance in Tl2Mn2O7 In: Solid State Communications. 1997 ; Vol. 101, No. 6. pp. 417-421.
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