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Title: Localized Control of Curie Temperature in Perovskite Oxide Film by Capping-Layer-Induced Octahedral Distortion

Journal Article · · Physical Review Letters
 [1];  [2];  [3];  [4];  [2];  [5];  [2];  [4];  [1];  [2];  [1]
  1. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
  2. Univ. of Twente, Enschede (Netherlands). MESA+ Inst. for Nanotechnology
  3. Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy; Soochow Univ., Suzhou, Jiangsu (China). College of Physics, Optoelectronics and Energy
  4. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
  5. Chinese Academy of Sciences (CAS), Ningbo (China). Key Lab. of Magnetic Materials and Devices & Zhejiang Province Key Lab. of Magnetic Materials and Application Technology, Ningbo Inst. of Materials Technology and Engineering

With reduced dimensionality, it is often easier to modify the properties of ultrathin films than their bulk counterparts. Strain engineering, usually achieved by choosing appropriate substrates, has been proven effective in controlling the properties of perovskite oxide films. An emerging alternative route for developing new multifunctional perovskite is by modification of the oxygen octahedral structure. Here we report the control of structural oxygen octahedral rotation in ultrathin perovskite SrRuO3 films by the deposition of a SrTiO3 capping layer, which can be lithographically patterned to achieve local control. Here, using a scanning Sagnac magnetic microscope, we show an increase in the Curie temperature of SrRuO3 due to the suppression octahedral rotations revealed by the synchrotron x-ray diffraction. Lastly, this capping-layer-based technique may open new possibilities for developing functional oxide materials.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF)
Grant/Contract Number:
DMR-1350122; ECCS-1542152; FG02-05ER46237; AC02-76SF00515
OSTI ID:
1410802
Alternate ID(s):
OSTI ID: 1405207
Journal Information:
Physical Review Letters, Vol. 119, Issue 17; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 24 works
Citation information provided by
Web of Science

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Cited By (6)

Interface Engineered Room‐Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films journal November 2019
Spin chirality fluctuation in two-dimensional ferromagnets with perpendicular magnetic anisotropy journal August 2019
Real-space charge-density imaging with sub-ångström resolution by four-dimensional electron microscopy journal October 2019
Interfacial oxygen-octahedral-tilting-driven electrically tunable topological Hall effect in ultrathin SrRuO 3 films journal July 2019
Interface Engineered Room-Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films. text January 2020
Interface Engineered Room-Temperature Ferromagnetic Insulating State in Ultrathin Manganite Films. text January 2019

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