183 citations · 258 across the 6 of their papers we have counts for
6 papers
Electric field thermopower modulation analysis of an interfacial conducting layer formed between Y2O3 and rutile TiO2
Taku Mizuno, Yuki Nagao, Akira Yoshikawa +4
Electric field modulation analysis of thermopower (S) - carrier concentration (n) relation of a bilayer laminate structure composed of a 1.5-nm thick conducting layer, probably Tin…
Electric field modulation of thermopower for transparent amorphous oxide thin film transistors
Hirotaka Koide, Yuki Nagao, Kunihito Koumoto +5
To clarify the electronic density of states (DOS) around the conduction band bottom for state of the art transparent amorphous oxide semiconductors (TAOSs), InGaZnO4 and In2MgO4, w…
Experimental characterization of the electronic structure of anatase TiO2: Thermopower modulation
Yuki Nagao, Akira Yoshikawa, Kunihito Koumoto +3
Thermopower (S) for anatase TiO2 epitaxial films (n3D: 1E17-1E21 /cm3) and the gate voltage (Vg) dependence of S for thin film transistors (TFTs) based on TiO2 films were investiga…
A Single-Crystalline, Epitaxial SrTiO3 Thin-Film Transistor
Kosuke Uchida, Akira Yoshikawa, Kunihito Koumoto +3
We report herein fabrication and characterization of a thin-film transistor (TFT) using single-crystalline, epitaxial SrTiO3 film, which was grown by a pulsed laser deposition tech…
Electric-Field Modulation of Thermopower for the KTaO3 Field Effect Transistors
Akira Yoshikawa, Kosuke Uchida, Kunihito Koumoto +3
We show herein fabrication and field-modulated thermopower for KTaO3 single-crystal based field-effect transistors (FETs). The KTaO3 FET exhibits field effect mobility of ~8 cm2/Vs…
Enhanced effective mass in doped SrTiO3 and related perovskites
Wilfried Wunderlich, Hiromichi Ohta, Kunihito Koumoto
The effective mass is one of the main factors determining the Seebeck coefficient and electronic conductivity. Nb-doping increases the effective mass because of two reasons, lattic…