Hidden one-dimensional electronic structure and non-Fermi liquid angle resolved photoemission line shapes of $η$-Mo$_4$O$_{11}$

Details Hidden one-dimensional electronic structure and non-Fermi liquid angle resolved photoemission line shapes of $η$-Mo$_4$O$_{11}$ Hidden one-dimensional electronic structure and non-Fermi liquid angle resolved photoemission line shapes of $η$-Mo$_4$O$_{11}$

2005-07-15

arxiv.org/abs/cond-mat/0507382v2

Phys. Rev. B 72, 035126 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

3 figures; Erratum added to include missed references

Scientific paper

10.1103/PhysRevB.72.035126

We report angle resolved photoemission (ARPES) spectra of $\eta$-Mo$_4$O$_{11}$, a layered metal that undergoes two charge density wave (CDW) transitions at 109 K and 30 K. We have directly observed the ``hidden one-dimensional (hidden-1d)'' Fermi surface and an anisotropic gap opening associated with the 109 K transition, in agreement with the band theoretical description of the CDW transition. In addition, as in other hidden-1d materials such as NaMo$_6$O$_{17}$, the ARPES line shapes show certain anomalies, which we discuss in terms of non-Fermi liquid physics and possible roles of disorder.

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