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Oxygen Vacancy Dependence of Magnetic Behavior in the LaAlO 3 /SrTiO 3 Heterostructures
Author(s) -
Hu HaiLong,
Ao Lei,
Pham Anh,
Wang Danyang,
Wang Yu,
Chen Zhigang,
Kong Charlie,
Tan Thiam Teck,
Zu Xiaotao,
Li Sean
Publication year - 2016
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201600547
Subject(s) - spintronics , magnetism , heterojunction , materials science , condensed matter physics , ferromagnetism , oxygen , optoelectronics , physics , quantum mechanics
The discovery of magnetism at the LaAlO 3 /SrTiO 3 heterostructures has attracted a lot of interests in regards to the origin of magnetic properties appearing in this nonmagnetic system. In this paper, the existence of a robust ferromagnetic state in the LaAlO 3 /SrTiO 3 heterostructures is demonstrated. The oxygen vacancy dependence of magnetic phenomena demonstrates the correlation between the magnetic properties and the oxygen vacancies. The strong ferromagnetism can be also manipulated by controlling the partial pressure of oxygen during the film deposition process. The well‐controlled magnetism may open an avenue for the applications of magnetic storage and spintronics with the LaAlO 3 /SrTiO 3 heterostructures.