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LMGP Seminar : C. ACHA - Resistive switching characteristics of complex oxides RRAM devices

Published on May 15, 2013
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Conference May 24, 2013
Friday at 11:00 am - LMGP Conference room - 2nd floor
LMGP / Grenoble INP Minatec
3 parvis Louis Néel - Grenoble 
Accès : Tram B - Cité Internationale

Free entrance - No registration required  
Carlos ACHA

Carlos ACHA

Carlos Acha
Departamento de Física - FCEyN - Universidad de Buenos Aires and IFIBA - CONICET (Argentina)
Carlos ACHA is visiting Michel Boudard at the LMGP laboratory for 1 month, until mid of june.

Resistive switching characteristics of complex oxides RRAM devices


Abstract

The resistive random access memories (RRAM) based on the non-volatile change of the resistance of metal-oxide interfaces upon the application of an electric field are nowadays an interesting emerging technology. Their possible technological application as a replacement of the actual non-volatile RAM memory devices is encouraging new basic research in order to obtain a perfect control of all the parameters that influence the effect.
In this talk I will present our recent studies performed on YBa2Cu3O7-d (YBCO) - metal interfaces. I will show the non-volatile and polarity dependent resistance switching (RS) effect on these devices as well as different characteristics associated with it: the macroscopic extension of the effect to the bulk YBCO, how the superconducting state is modified, the existence of intrinsic relaxation processes that affect the resistivity after applying the pulses, the temperature sensitivity of the effect, a simple circuit model that describes the IV-characteristics and the appearance of fatigue effects upon applying  cyclic electric strains.  
Most of the effects here presented will be discussed by considering the physics derived from an electric field-induced oxygen ion migration, which controls the electric transport properties of these metal-complex oxide interfaces.

 

Brief CV

Since 1998 Carlos Acha is a Professor of the University of Buenos Aires. He is actually the Director of the Low Temperature Physics Labs of the Physics Department at Faculty of Sciences at Buenos Aires.
His work is focused on topics of condensed matter physics with experimental approach. He actually works in two main fields: high pressure effects on the properties of Fe-based superconductors and the studies of resistive switching effects on interfaces of complex oxides with metals, with potential applications as RRAM memories or as possible implementations of logic or neuromorphic circuits.


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Date of update August 27, 2013

  • Tutelle CNRS
  • Tutelle Grenoble INP
Univ. Grenoble Alpes