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Phase Instability amid Dimensional Crossover in Artificial Oxide Crystal
Seung Gyo Jeong, Taewon Min, Sungmin Woo +13
Artificial crystals synthesized by atomic-scale epitaxy provides the ability to control the dimensions of the quantum phases and associated phase transitions via precise thickness…
Gate tunable spin-orbit coupling and weak antilocalization effect in an epitaxial LaSrMnO thin film
Shao-Pin Chiu, Michihiko Yamanouchi, Tatsuro Oyamada +2
Epitaxial LaSrMnO (LSMO) films have been grown on SrTiO (001) substrates via pulsed laser deposition. In a 22-nm thick LSMO film with a low residual resisti…
Thermopower analysis of metal-insulator transition temperature modulations in vanadium dioxide thin films with lattice distortion
Takayoshi Katase, Kenji Endo, Hiromichi Ohta
Insulator-to-metal (MI) phase transition in vanadium dioxide (VO2) thin films with controlled lattice distortion was investigated by thermopower measurements. VO2 epitaxial films w…
Thermopower analysis of the electronic structure around metal-insulator transition in V1-xWxO2
Takayoshi Katase, Kenji Endo, Hiromichi Ohta
Electronic structure across the metal-insulator (MI) transition of electron-doped V1-xWxO2 epitaxial films (x = 0-0.06) grown on alfa-Al2O3 substrates was studied by means of therm…
Thermopower enhancement by fractional layer control in 2D oxide superlattices
Woo Seok Choi, Hiromichi Ohta, Ho Nyung Lee
We have investigated two-dimensional thermoelectric properties in transition metal oxide heterostructures. In particular, we adopted an unprecedented approach to direct tuning of t…
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…