2016
DOI: 10.7566/jpsj.85.094710
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Topological Domain Wall and Valley Hall Effect in Charge Ordered Phase of Molecular Dirac Fermion System α-(BEDT-TTF)2I3

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Cited by 25 publications
(36 citation statements)
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“…Already introduced as the metalto-insulator transition temperature, T * also defines a phase boundary between the massless Dirac phase (with gapless Dirac cones) and the (charge-ordered) massive Dirac phase (with gapped Dirac cones). T DW , which coincides with T * , gives the energy scale for forming a single domain wall determined from the temperature where the domain-wall width W D diverges [15,17], and T M represents a merging transition of two gapped Dirac cones [4,5,15,16,[19][20][21][22][23]. The fact that we have T * = T DW directly supports the notion that the domain wall only appears in the charge-ordered state and disappears in the massless Dirac phase.…”
Section: A Local Electronic Structures and The Massive Dirac Electrosupporting
confidence: 73%
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“…Already introduced as the metalto-insulator transition temperature, T * also defines a phase boundary between the massless Dirac phase (with gapless Dirac cones) and the (charge-ordered) massive Dirac phase (with gapped Dirac cones). T DW , which coincides with T * , gives the energy scale for forming a single domain wall determined from the temperature where the domain-wall width W D diverges [15,17], and T M represents a merging transition of two gapped Dirac cones [4,5,15,16,[19][20][21][22][23]. The fact that we have T * = T DW directly supports the notion that the domain wall only appears in the charge-ordered state and disappears in the massless Dirac phase.…”
Section: A Local Electronic Structures and The Massive Dirac Electrosupporting
confidence: 73%
“…Finally, let us show that an emergent gapless state naturally appears on the the domain wall in the above model [15][16][17]. Figures 2(a) and (b) show the mean-field energy eigenvalue E ν (k a ) around the Fermi level at the transition temperature to the charge-ordered state (hereafter referred to as T * ) for the (AA -BC) asymmetricand (AA -AA ) symmetric-edge patterns, respectively.…”
Section: A Models and Summary Of Previous Studies: Emergent Domain Wmentioning
confidence: 99%
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