The possibility to develop neuromorphic computing devices able to mimic the extraordinary data processing capabilities of biological systems spurs the research on memristive systems. Memristors with additional functionalities such as robust memcapacitance can outperform standard devices in key aspects such as power consumption or miniaturization possibilities. In this work, we demonstrate a large memcapacitive response of a perovskite memristive interface, using the topotactic redox ability of La0.5Sr0.5Mn0.5Co0.5O3-δ (LSMCO, 0 ≤ δ ≤ 0.62). We demonstrate that the multi-mem behavior originates at the switchable n-p diode formed at the Nb:SrTiO3/LSMCO interface. We found for our Nb:SrTiO3/LSMCO/Pt devices a memcapacitive effect CHIGH/CLOW ∼ 100 at 150 kHz. The proof-of-concept interface reported here opens a promising venue to use topotactic redox materials for disruptive nanoelectronics, with straightforward applications in neuromorphic computing technology.
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10 February 2020
Research Article|
February 10 2020
Large memcapacitance and memristance at Nb:SrTiO3/La0.5Sr0.5Mn0.5Co0.5O3-δ topotactic redox interface Available to Purchase
W. Román Acevedo;
W. Román Acevedo
1
Comisión Nacional de Energía Atómica and Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes
, 1650, Buenos Aires, Argentina
2
Consejo Nacional de Investigaciones Científicas y Técnicas
, Godoy Cruz 2290 (1425), Buenos Aires, Argentina
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C. A. M. van den Bosch;
C. A. M. van den Bosch
3
Department of Materials, Imperial College London
, London SW7 2AZ, United Kingdom
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M. H. Aguirre
;
M. H. Aguirre
4
Departmento de Física de Materia Condensada, Universidad de Zaragoza
, Pedro Cerbuna 12, 50009 Zaragoza, Spain
5
Laboratorio de Microscopías Avanzada (LMA), Instituto de Nanociencia de Aragón (INA)-Universidad de Zaragoza
, C/Mariano Esquillor s/n. 50018 Zaragoza, Spain
6
Instituto de Ciencias de Materiales de Aragón (ICMA), Universidad de Zaragoza
, 50009 Zaragoza, Spain
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C. Acha
;
C. Acha
2
Consejo Nacional de Investigaciones Científicas y Técnicas
, Godoy Cruz 2290 (1425), Buenos Aires, Argentina
7
Depto. de Física, FCEyN, Universidad de Buenos Aires & IFIBA, UBA-CONICET
, Pab I, Ciudad Universitaria, Buenos Aires (1428), Argentina
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A. Cavallaro
;
A. Cavallaro
3
Department of Materials, Imperial College London
, London SW7 2AZ, United Kingdom
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C. Ferreyra
;
C. Ferreyra
1
Comisión Nacional de Energía Atómica and Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes
, 1650, Buenos Aires, Argentina
2
Consejo Nacional de Investigaciones Científicas y Técnicas
, Godoy Cruz 2290 (1425), Buenos Aires, Argentina
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M. J. Sánchez
;
M. J. Sánchez
8
Instituto de Nanociencia y Nanotecnología (CONICET-CNEA), Centro Atómico Bariloche and Instituto Balseiro
, 8400 San Carlos de Bariloche, Argentina
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L. Patrone;
L. Patrone
9
INTI, CMNB
, Av. Gral Paz 5445, B1650KNA San Martín, Buenos Aires, Argentina
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A. Aguadero;
A. Aguadero
a)
3
Department of Materials, Imperial College London
, London SW7 2AZ, United Kingdom
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D. Rubi
D. Rubi
a)
1
Comisión Nacional de Energía Atómica and Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes
, 1650, Buenos Aires, Argentina
2
Consejo Nacional de Investigaciones Científicas y Técnicas
, Godoy Cruz 2290 (1425), Buenos Aires, Argentina
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W. Román Acevedo
1,2
C. A. M. van den Bosch
3
M. H. Aguirre
4,5,6
C. Acha
2,7
A. Cavallaro
3
C. Ferreyra
1,2
M. J. Sánchez
8
L. Patrone
9
A. Aguadero
3,a)
D. Rubi
1,2,a)
1
Comisión Nacional de Energía Atómica and Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes
, 1650, Buenos Aires, Argentina
2
Consejo Nacional de Investigaciones Científicas y Técnicas
, Godoy Cruz 2290 (1425), Buenos Aires, Argentina
3
Department of Materials, Imperial College London
, London SW7 2AZ, United Kingdom
4
Departmento de Física de Materia Condensada, Universidad de Zaragoza
, Pedro Cerbuna 12, 50009 Zaragoza, Spain
5
Laboratorio de Microscopías Avanzada (LMA), Instituto de Nanociencia de Aragón (INA)-Universidad de Zaragoza
, C/Mariano Esquillor s/n. 50018 Zaragoza, Spain
6
Instituto de Ciencias de Materiales de Aragón (ICMA), Universidad de Zaragoza
, 50009 Zaragoza, Spain
7
Depto. de Física, FCEyN, Universidad de Buenos Aires & IFIBA, UBA-CONICET
, Pab I, Ciudad Universitaria, Buenos Aires (1428), Argentina
8
Instituto de Nanociencia y Nanotecnología (CONICET-CNEA), Centro Atómico Bariloche and Instituto Balseiro
, 8400 San Carlos de Bariloche, Argentina
9
INTI, CMNB
, Av. Gral Paz 5445, B1650KNA San Martín, Buenos Aires, Argentina
Appl. Phys. Lett. 116, 063502 (2020)
Article history
Received:
October 18 2019
Accepted:
January 27 2020
Connected Content
Citation
W. Román Acevedo, C. A. M. van den Bosch, M. H. Aguirre, C. Acha, A. Cavallaro, C. Ferreyra, M. J. Sánchez, L. Patrone, A. Aguadero, D. Rubi; Large memcapacitance and memristance at Nb:SrTiO3/La0.5Sr0.5Mn0.5Co0.5O3-δ topotactic redox interface. Appl. Phys. Lett. 10 February 2020; 116 (6): 063502. https://doi.org/10.1063/1.5131854
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