Strain-induced metal-insulator transition in ultrathin films of SrRuO3

Gupta, Kapil ; Mandal, Basudeb ; Mahadevan, Priya (2014) Strain-induced metal-insulator transition in ultrathin films of SrRuO3 Physical Review B: Condensed Matter and Materials Physics, 90 (12). Article ID 125109. ISSN 2469-9950

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The ultrathin film limit has been shown to be a rich playground for unusual low-dimensional physics. Taking the example of SrRuO3, which is ferromagnetic and metallic at the bulk limit, one finds that it becomes antiferromagnetic and insulating at the three-monolayers limit when grown on SrTiO3. The origin of the insulating state is traced to strongly orbital-dependent exchange splittings. A modest compressive strain of 1% of the SrTiO3 substrate is then found to drive the system into a highly confined two-dimensional 100% spin polarized metallic state. This metal-insulator transition driven by a modest strain could be useful in two-state device applications.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:102980
Deposited On:02 Feb 2018 03:55
Last Modified:02 Feb 2018 03:55

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