Thermoelectric Power of Multilayered Massless Dirac Fermion System α-(BEDT-TTF)2I3 —Charge Ordering and Zero-Gap States— | Zendy

Ryuichi Kitamura | Zendy; Naoya Tajima | Zendy; Kôji Kajita | Zendy; Reìzo Kato | Zendy; Masafumi Tamura | Zendy; Toshio Naito | Zendy; Yutaka Nishio | Zendy

Open Access

Thermoelectric Power of Multilayered Massless Dirac Fermion System α-(BEDT-TTF)₂I₃ —Charge Ordering and Zero-Gap States—

Author(s) -

Ryuichi Kitamura,

Naoya Tajima,

Kôji Kajita,

Reìzo Kato,

Masafumi Tamura,

Toshio Naito,

Yutaka Nishio

Publication year - 2014

Publication title -

proceedings of the 12th asia pacific physics conference (appc12)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.7566/jpscp.1.012097

Subject(s) - massless particle , helical dirac fermion , seebeck coefficient , condensed matter physics , dirac fermion , zero (linguistics) , fermion , charge (physics) , dirac (video compression format) , thermoelectric effect , physics , quantum mechanics , dirac sea , linguistics , philosophy , neutrino

We have studied the thermoelectric power of an α-(BEDT-TTF)2I3 system paying particular attention to the new type of zero-gap state (ZGS). α-(BEDT-TTF)2I3 exhibits a charge ordering at ambient pressures and transitions from its charge order to ZGS when hydrostatic pressure is applied. We observed a sharp peak at the charge order transition temperature due to the anisotropy change in the conductivity. Above 1.3 GPa, thermoelectric power characteristics of the ZGS could be detected.

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