Temperature dependence of the excitonic insulator phase model in 1T-TiSe₂
- Monney, Claude Institut de Physique, Université de Fribourg, Switzerland
- Cercellier, H. Institut Néel, CNRS, Grenoble, France
- Battaglia, Corsin Institut de Physique, Université de Fribourg, Switzerland
- Schwier, Eike Fabian Institut de Physique, Université de Fribourg, Switzerland
- Didiot, Clément Institut de Physique, Université de Fribourg, Switzerland
- Garnier, Michael G. Institut de Physique, Université de Fribourg, Switzerland
- Beck, Hans Institut de Physique, Université de Fribourg, Switzerland
- Aebi, Philipp Institut de Physique, Université de Fribourg, Switzerland
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05.06.2009
Published in:
- Physica B: Condensed Matter. - 2009, vol. 404, no. 19, p. 3172-3175
English
Recently, detailed calculations of the excitonic insulator phase model adapted to the case of 1T-TiSe2 have been presented. Through the spectral function theoretical photoemission intensity maps can be generated which are in very good agreement with experiment [H. Cercellier, et al., Phys. Rev. Lett. 99 (2007) 146403]. In this model, excitons condensate in a BCS-like manner and give rise to a charge density wave, characterized by an order parameter. Here, we assume an analytical form of the order parameter, allowing to perform temperature dependent calculations. The influence of this order parameter on the electronic spectral function, to be observed in photoemission spectra, is discussed. The resulting chemical potential shift and an estimation of the resistivity are also shown.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 12904
- DOI 10.1016/j.physb.2009.07.047
- Persistent URL
- https://folia.unifr.ch/unifr/documents/301431
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