@article{oai:ynu.repo.nii.ac.jp:00003933,
 author = {Jung, W. H. and Wakai, H. and Nakatsugawa, Hiroshi and Iguchi, E.},
 issue = {5},
 journal = {Journal of Applied Physics},
 month = {},
 note = {application/pdf, The thermoelectric power and dc conductivity of ＄La_{2/3}TiO_{3-δ}＄ (δ=0.057, 0.07, and 0.16) were investigated. The thermoelectric power is negative between 80 and 350 K. The measured thermoelectric power of ＄La_{2/3}TiO_{3-δ}＄ increases linearly with temperature, in agreeent with the model proposed by C. Wood and D. Emin [Phys. Rev. B 29, 4582(1984)],and represented by A+BT. This temperature dependence indicates that the charge carrier in this material is a small polaron.There exists a linear relation between log(σT) and 1/T in the range of 200–300 K, the activation energies for small polaron hopping were 0.15, 0.21, and 0.24 eV for δ=0.16, 0.07, and 0.057, respectively. These properties are discussed in terms of a hopping process involving small polarons.This conclusion is confirmed theoretically. Based upon polaron energies obtained experimentally, several parameters relevant to small polaron transport in this material are estimated.},
 pages = {2560--2563},
 title = {Small polarons in ＄La_{2/3}TiO_{3-δ}＄},
 volume = {88},
 year = {2000}
}