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

Angle-resolved photoemission (ARPES) on the quasi-one-dimensional conductor (TaSe4)(2)I 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 Lin-Lit, 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.


Published in:
Physical Review Letters, 87, 21, 216404
Year:
2001
ISSN:
0031-9007
Keywords:
Note:
Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland. ETH Zurich, Festkorperphys Lab, CH-8093 Zurich, Switzerland. Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA. Univ Bayreuth, D-95440 Bayreuth, Germany. Perfetti, L, Ecole Polytech Fed Lausanne, Inst Phys Appl, CH-1015 Lausanne, Switzerland.
ISI Document Delivery No.: 496NA
216404
Laboratories:




 Record created 2006-10-03, last modified 2018-03-18


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)