Spectroscopic indications of polaronic carriers in the quasi-one-dimensional conductor (TaSe4)2I

L. Perfetti; H. Berger; A. Reginelli; L. Degiorgi; H. Höchst; J. Voit; G. Margaritondo; M. Grioni

doi:10.1103/PhysRevLett.87.216404

Spectroscopic indications of polaronic carriers in the quasi-one-dimensional conductor (TaSe₄)₂I

L. Perfetti
, H. Berger
, A. Reginelli
, L. Degiorgi
, H. Höchst
, J. Voit
, G. Margaritondo
, M. Grioni

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

Abstract

Angle-resolved photoemission (ARPES) on the quasi-one-dimensional conductor (TaSe₄)₂I shows a hidden Fermi-surface crossing in its metallic state and the opening of a Peierls gap at low temperatures. The underlying quasiparticles have vanishing spectral weight and extremely short coherence lengths. They are interpreted as polarons in the strong-coupling adiabatic limit, and almost all their ARPES weight is incoherent. These observations suggest a scenario where the long-standing contradictions between ARPES and other experiments on Peierls materials could be resolved.

Original language	English
Pages (from-to)	216404-1-216404-4
Journal	Physical Review Letters
Volume	87
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.87.216404
Publication status	Published - 19 Nov 2001
Externally published	Yes

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10.1103/PhysRevLett.87.216404

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title = "Spectroscopic indications of polaronic carriers in the quasi-one-dimensional conductor (TaSe4)2I",

abstract = "Angle-resolved photoemission (ARPES) on the quasi-one-dimensional conductor (TaSe4)2I shows a hidden Fermi-surface crossing in its metallic state and the opening of a Peierls gap at low temperatures. The underlying quasiparticles have vanishing spectral weight and extremely short coherence lengths. They are interpreted as polarons in the strong-coupling adiabatic limit, and almost all their ARPES weight is incoherent. These observations suggest a scenario where the long-standing contradictions between ARPES and other experiments on Peierls materials could be resolved.",

author = "L. Perfetti and H. Berger and A. Reginelli and L. Degiorgi and H. H{\"o}chst and J. Voit and G. Margaritondo and M. Grioni",

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AU - Perfetti, L.

AU - Berger, H.

AU - Reginelli, A.

AU - Degiorgi, L.

AU - Höchst, H.

AU - Voit, J.

AU - Margaritondo, G.

AU - Grioni, M.

PY - 2001/11/19

Y1 - 2001/11/19

N2 - Angle-resolved photoemission (ARPES) on the quasi-one-dimensional conductor (TaSe4)2I shows a hidden Fermi-surface crossing in its metallic state and the opening of a Peierls gap at low temperatures. The underlying quasiparticles have vanishing spectral weight and extremely short coherence lengths. They are interpreted as polarons in the strong-coupling adiabatic limit, and almost all their ARPES weight is incoherent. These observations suggest a scenario where the long-standing contradictions between ARPES and other experiments on Peierls materials could be resolved.

AB - Angle-resolved photoemission (ARPES) on the quasi-one-dimensional conductor (TaSe4)2I shows a hidden Fermi-surface crossing in its metallic state and the opening of a Peierls gap at low temperatures. The underlying quasiparticles have vanishing spectral weight and extremely short coherence lengths. They are interpreted as polarons in the strong-coupling adiabatic limit, and almost all their ARPES weight is incoherent. These observations suggest a scenario where the long-standing contradictions between ARPES and other experiments on Peierls materials could be resolved.

U2 - 10.1103/PhysRevLett.87.216404

DO - 10.1103/PhysRevLett.87.216404

M3 - Article

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SN - 0031-9007

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JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

ER -

Spectroscopic indications of polaronic carriers in the quasi-one-dimensional conductor (TaSe4)2I

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Spectroscopic indications of polaronic carriers in the quasi-one-dimensional conductor (TaSe₄)₂I