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Title: High On/Off Ratio Memristive Switching of Manganite/Cuprate Bilayer by Interfacial Magnetoelectricity

Journal Article · · Advanced Materials Interfaces
 [1];  [2];  [3];  [3];  [4];  [5];  [6];  [7];  [7];  [7];  [8];  [3];  [3];  [3];  [9]
  1. Vanderbilt Univ., Nashville, TN (United States); University of Memphis, TN (United States)
  2. SuperSTEM Laboratory, Daresbury (United Kingdom); Oxford University (United Kingdom)
  3. Complutense University of Madrid (Spain)
  4. Vanderbilt Univ., Nashville, TN (United States)
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Argonne National Lab. (ANL), Argonne, IL (United States)
  7. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  8. Complutense University of Madrid (Spain); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  9. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Memristive switching serves as the basis for a new generation of electronic devices. Conventional memristors are two-terminal devices in which the current is turned on and off by redistributing point defects, e.g., vacancies. Memristors based on alternative mechanisms have been explored, but achieving both high on/off ratio and low switching energy, as needed in applications, remains a challenge. This paper reports memristive switching in La0.7Ca0.3MnO3/PrBa2Cu3O7 bilayers with an on/off ratio greater than 103 and results of density functional theory calculations in terms of which it is concluded that the phenomenon is likely the result of a new type of interfacial magnetoelectricity. More specifically, this study shows that an external electric field induces subtle displacements of the interfacial Mn ions, which switches on/off an interfacial magnetic “dead layer”, resulting in memristive behavior for spin-polarized electron transport across the bilayer. The interfacial nature of the switching entails low energy cost, about of a tenth of atto Joule for writing/erasing a “bit”. To conclude, the results indicate new opportunities for manganite/cuprate systems and other transition metal oxide junctions in memristive applications.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725; FG02-09ER46554; AC02-­06CH11357; AC02-05CH11231; DMR130121; AC02-06CH11357
OSTI ID:
1311245
Alternate ID(s):
OSTI ID: 1352661; OSTI ID: 1456954; OSTI ID: 1597786
Journal Information:
Advanced Materials Interfaces, Vol. 3, Issue 16; ISSN 2196-7350
Publisher:
Wiley-VCHCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Interface-induced multiferroism by design in complex oxide superlattices journal June 2017

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