Abstract

Abstract The transition metal dichalcogenides are about 60 in number. Two-thirds of these assume layer structures. Crystals of such materials can be cleaved down to less than 1000 Å and are then transparent in the region of direct band-to-band transitions. The transmission spectra of the family have been correlated group by group with the wide range of electrical and structural data available to yield useful working band models that are in accord with a molecular orbital approach. Several special topics have arisen; these include exciton screening, d-band formation, and the metal/insulator transition; also magnetism and superconductivity in such compounds. High pressure work seems to offer the possibility for testing the recent theory of excitonic insulators.

Keywords

Condensed matter physicsSuperconductivityMaterials scienceExcitonMagnetismTransition metalElectronic band structureMetal–insulator transitionMetalPhysicsChemistry

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Publication Info

Year
1969
Type
article
Volume
18
Issue
73
Pages
193-335
Citations
3996
Access
Closed

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J. A. Wilson, A. D. Yoffe (1969). The transition metal dichalcogenides discussion and interpretation of the observed optical, electrical and structural properties. Advances In Physics , 18 (73) , 193-335. https://doi.org/10.1080/00018736900101307

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DOI
10.1080/00018736900101307