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arXiv · 1610.02842

Gapped electron fractionalization in robustly one dimensional Li0.9Mo6O17

Natalia Lera·J. V. Alvarez·J. W. Allen
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Abstract

The angle resolved photoemission spectroscopy lineshapes of quasi one-dimensional (1d) Li0.9Mo6O17 display both agreement with and departures from the one-band Tomonaga-Luttinger model. We show that the departures can be understood by explicitly accounting for the four modes arising from the two quasi-1d bands known to cross the Fermi energy. The key assumption is that the antisymmetric charge mode is gapped with a magnitude near the temperature (T) of a mysterious 25K powerlaw resistivity upturn. The gap is consistent with the lack of a charge or spin density wave accompanying the upturn, is able to control the upturn T, and prevents crossover to a Fermi liquid (FL) down to the superconducting transition at 1.9K.

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Natalia Lera, J. V. Alvarez, J. W. Allen. 2016-10-10. Gapped electron fractionalization in robustly one dimensional Li0.9Mo6O17. https://arxiv.org/abs/1610.02842

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