Memristive behaviors in Pt/BaTiO3/Nb:SrTiO3 ferroelectric tunnel junctions
Creators
- 1. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China and Department of Materials Science and Engineering, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093 (China)
- 2. College of Physics, Qingdao University, Qingdao 266071 (China)
Description
We demonstrate memristive behaviors in Pt/BaTiO3/Nb:SrTiO3 metal/ferroelectric/semiconductor ferroelectric tunnel junctions, in which the semiconductor electrode can be switched between the accumulated and the depleted states by polarization reversal in the BaTiO3 barrier via the ferroelectric field effect. An extra barrier, against electron tunneling, forms in the depleted region of the Nb:SrTiO3 electrode surface, which together with the ferroelectric barrier itself modulate the tunneling resistance with the change of effective polarization. Continuous resistance modulation over four orders of magnitude is hence achieved by application of programmed voltage pulses with different polarity, amplitude, and repetition numbers, as a result of the development of the extra barrier
Additional details
Identifiers
- DOI
- 10.1063/1.4892846;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 105
- Journal Issue
- 5
- Journal Page Range
- p. 052910-052910.4
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46020700
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- BARIUM COMPOUNDS; CONDUCTOR DEVICES; ELECTRODES; FERROELECTRIC MATERIALS; NIOBIUM; PLATINUM; POLARIZATION; SEMICONDUCTOR MATERIALS; STRONTIUM TITANATES; TITANIUM OXIDES; TUNNEL EFFECT
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; DIELECTRIC MATERIALS; ELECTRICAL EQUIPMENT; ELEMENTS; EQUIPMENT; MATERIALS; METALS; OXIDES; OXYGEN COMPOUNDS; PLATINUM METALS; REFRACTORY METALS; STRONTIUM COMPOUNDS; TITANATES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS
Optional Information
- Notes
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