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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Electrical and structural properties of ABO3/SrTiO3 interfacesдоклад на конференции
- Авторы: Калабухов А.С., Claeson T., Aurino P.P., Gunnarsson R., Winkler D., Sakharov and M P Volkov V.I., Tuzla N., Borjesson J., Boikov Y.A., Serenkov I.T., Olsson E.
- Конференция : 2012 MRS Spring Meeting
- Даты проведения конференции: 2012
- Тип доклада: не указан
- Докладчик: не указан
- Место проведения: Moscone Convention Center, San-Francisco, United States, United States
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Аннотация доклада:
Electrical transport and microstructure of interfaces between nm-thick films of various perovskite oxides grown by pulsed laser deposition (PLD) on TiO2- terminated SrTiO3 (STO) substrates are compared. LaAlO3/STO and KTaO3/STO interfaces become quasi-2DEG after a critical film thickness of 4 unit cell layers. The conductivity survives long anneals in oxygen atmosphere. LaMnO3/STO interfaces remain insulating for all film thicknesses and NdGaO3/STO interfaces are conducting but the conductivity is eliminated after oxygen annealing. Medium-energy ion spectroscopy and scanning transmission electron microscopy detect cationic intermixing within several atomic layers from the interface in all studied interfaces. Our results indicate that the electrical reconstruction in the polar oxide interfaces is a complex combination of different mechanisms, and oxygen vacancies play an important role.
- Добавил в систему: Калабухов Алексей Сергеевич