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arXiv · 1301.5705

Orthogonal Dirac semimetal on honeycomb lattice and the electron spectral function in orthogonal metallic states

Yin Zhong·Hong-Gang Luo
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Abstract

Recently, a concept of orthogonal metal has been introduced to reinterpret the disordered state of slave-spin representation in the Hubbard model as an exotic gapped metallic state. We have extended this concept to study the slave-spin representation of Hubbard model on the honeycomb lattice.[Phys. Rev. B \textbf{86}, 165134 (2012)] It is found that a novel gapped metallic state coined orthogonal Dirac semimetal is identified. Such state corresponds to the disordered phase of slave-spin and has the same thermal-dynamical and transport properties as Dirac semimetal but its singe-particle excitation is gapped. More importantly, for generical orthogonal metallic states, the electron spectral function which may be probed in future angle-resolved photoemission spectroscopy (ARPES) experiments are studied.

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Yin Zhong, Hong-Gang Luo. 2013-01-24. Orthogonal Dirac semimetal on honeycomb lattice and the electron spectral function in orthogonal metallic states. https://doi.org/10.1142/s021797921361002x

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