title: Electron-hole doping asymmetry of Fermi surface reconstructed in a simple Mott insulator.
abstract: It is widely recognized that the effect of doping into a Mott insulator is complicated and unpredictable, as can be seen by examining the Hall coefficient in high Tc cuprates. The doping effect, including the electron-hole doping asymmetry, may be more straightforward in doped organic Mott insulators owing to their simple electronic structures. Here we investigate the doping asymmetry of an organic Mott insulator by carrying out electric-double-layer transistor measurements and using cluster perturbation theory. The calculations predict that strongly anisotropic suppression of the spectral weight results in the Fermi arc state under hole doping, while a relatively uniform spectral weight results in the emergence of a non-interacting-like Fermi surface (FS) in the electron-doped state. In accordance with the calculations, the experimentally observed Hall coefficients and resistivity anisotropy correspond to the pocket formed by the Fermi arcs under hole doping and to the non-interacting FS under electron doping.
authors: Condensed Molecular Materials Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
authors: Yoshitaka
authors: Y
authors: Kawasugi
authors: Computational Condensed Matter Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.|Computational Materials Science Research Team, RIKEN Advanced Institute for Computational Science (AICS), Kobe, Hyogo 650-0047, Japan.
authors: Kazuhiro
authors: 0000-0002-2765-8297
authors: K
authors: Seki
authors: Department of Applied Physics, Waseda University, Tokyo 169-8555, Japan.
authors: Yusuke
authors: Y
authors: Edagawa
authors: Condensed Molecular Materials Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
authors: Yoshiaki
authors: Y
authors: Sato
authors: Department of Applied Physics, Waseda University, Tokyo 169-8555, Japan.
authors: Jiang
authors: J
authors: Pu
authors: Department of Applied Physics, Waseda University, Tokyo 169-8555, Japan.
authors: Taishi
authors: T
authors: Takenobu
authors: Computational Condensed Matter Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.|Computational Materials Science Research Team, RIKEN Advanced Institute for Computational Science (AICS), Kobe, Hyogo 650-0047, Japan.|Computational Quantum Matter Research Team, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan.
authors: Seiji
authors: S
authors: Yunoki
authors: Condensed Molecular Materials Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.|Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, National Institutes of Natural Sciences, Okazaki, Aichi 444-8585, Japan.
authors: Hiroshi M
authors: HM
authors: Yamamoto
authors: Condensed Molecular Materials Laboratory, RIKEN, Wako, Saitama 351-0198, Japan.
authors: Reizo
authors: R
authors: Kato