@article{oai:sucra.repo.nii.ac.jp:00013371,
 author = {Tajima, N. and 加藤, 礼三 and 谷口, 弘三},
 issue = {2},
 journal = {EPL},
 month = {},
 note = {http://www.iop.org/EJ/abstract/0295-5075/83/2/27008/ | http://www.iop.org/EJ/abstract/0295-5075/83/2/27008/, We have investigated the temperature dependence of the Hall coefficient and the resistivity of an organic Mott insulator, beta '-(BEDT-TTF)(2)ICl2 under ambient and hydrostatic pressures up to 2GPa. The charge gap, Delta, the effective mass, m*, and the scattering lifetime of carriers on Mott Hubbard bands were evaluated by analyzing these transport properties. We found that m* and Delta are written approximately as 1/m* infinity (1 - Delta/U-eff) in the low-pressure region and obtained the value of the effective on-site Coulomb energy, U-eff, of similar to 445meV. Moreover, we reveal that the effective scattering lifetime is proportional to the average distance between carriers in the two-dimensional plane, which suggests the existence of a scattering process attributable to carrier-carrier umklapp scattering in the Mott insulating state. Copyright (C) EPLA, 2008., text, application/pdf},
 pages = {27008-p1--27008-p5},
 title = {Transport properties of an organic Mott insulator beta '-(BEDT-TTF)(2)ICl2},
 volume = {83},
 year = {2008},
 yomi = {カトウ, レイゾウ and タニグチ, ヒロミ}
}