Fermi liquid and non-Fermi liquid spectral lineshapes in low-dimensional solids

We exploited angle-resolved photoemission (ARPES) to investigate the nature of the elementary quasiparticle (QP) excitations in selected low-dimensional compounds. In the model quasi two-dimensional conductor TiTe2, we observe spectral lineshapes which are consistent with a Fermi liquid (FL) scenario, and the usual QP scattering mechanisms. In contrast, in typical quasi one-dimensional Peierls systems like TTF-TCNQ, (TaSe4)(2)I and K0.3MoO3 we find clear non-FL lineshapes. We briefly discuss the possible origins of these unusual properties. (C) 2002 Elsevier Science B.V. All rights reserved.


Published in:
Journal Of Electron Spectroscopy And Related Phenomena, 127, 77-84
Year:
2002
Publisher:
Elsevier
ISSN:
0368-2048
Keywords:
Laboratories:




 Record created 2010-04-07, last modified 2018-03-17


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