Electronic band structure study of colossal magnetoresistance in Tl2Mn2O7

D. K. Seo; M. H. Whangbo; M. A. Subramanian

doi:10.1016/S0038-1098(96)00622-9

Electronic band structure study of colossal magnetoresistance in Tl₂Mn₂O₇

D. K. Seo, M. H. Whangbo, M. A. Subramanian

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The electronic structure of Tl₂Mn₂O₇ was examined by performing tight binding band calculations. The overlap between the Mnt_2g- 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 language	English (US)
Pages (from-to)	417-421
Number of pages	5
Journal	Solid State Communications
Volume	101
Issue number	6
DOIs	https://doi.org/10.1016/S0038-1098(96)00622-9
State	Published - Feb 1997
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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title = "Electronic band structure study of colossal magnetoresistance in Tl2Mn2O7",

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.",

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year = "1997",

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AU - Seo, D. K.

AU - Whangbo, M. H.

AU - Subramanian, M. A.

PY - 1997/2

Y1 - 1997/2

N2 - 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.

AB - 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.

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JO - Solid State Communications

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Electronic band structure study of colossal magnetoresistance in Tl₂Mn₂O₇

Abstract

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