Electric-Pulse-driven Electronic Phase Separation, Insulator-Metal Transition, and Possible Superconductivity in a Mott Insulator

Electric-Pulse-driven Electronic Phase Separation, Insulator-Metal Transition, and Possible Superconductivity in a Mott Insulator

Experimental evidence of a nonvolatile electric‐pulse‐induced insulator‐to‐metal transition and possible superconductivity in the Mott insulator GaTa4Se8 is reported. Scanning tunneling microscopy experiments show that this unconventional response of the system to short electric pulses arises from a...

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Veröffentlicht in:Advanced materials (Weinheim) 2008-07, Vol.20 (14), p.2760-2765
Hauptverfasser: Vaju, Cristian, Cario, Laurent, Corraze, Benoit, Janod, Etienne, Dubost, Vincent, Cren, Tristan, Roditchev, Dimitri, Braithwaite, Daniel, Chauvet, Olivier
Format: Artikel
Sprache:eng
Schlagworte:
Electric pulses
Electronics
Inorganic nanostructures
Insulators
Nanostructure
Organic electronics
Phase separation
Scanning tunneling microscopy
Semiconductors
Structure-property relationships
Superconductivity
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Zusammenfassung:Experimental evidence of a nonvolatile electric‐pulse‐induced insulator‐to‐metal transition and possible superconductivity in the Mott insulator GaTa4Se8 is reported. Scanning tunneling microscopy experiments show that this unconventional response of the system to short electric pulses arises from a nanometer‐scale electronic phase separation generated in the bulk material (see figure).
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.200702967