The electrochemical impact on electrostatic modulation of the metal-insulator transition in nickelates

Journal Article · Mon Mar 23 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4915269· OSTI ID:22398772

Bubel, Simon; Glaudell, Anne M.; Mates, Thomas E.; Hauser, Adam J. ^[1]; Stemmer, Susanne ^[2]

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1. California Nanosystems Institute (CNSI), University of California Santa Barbara (UCSB), California 93106 (United States)
2. Materials Department, University of California Santa Barbara (UCSB), California 93106 (United States)

For physical studies of correlated electron systems and for realizing novel device concepts, electrostatic modulation of metal-insulator transitions (MITs) is desired. The inherently high charge densities needed to modulate MITs make this difficult to achieve. The high capacitance of ionic liquids are attractive but, voltages are needed that can be in excess of the electrochemical stability of the system. Here, we show temperature/resistivity data that suggest electrostatic modulation of the MIT temperature of NdNiO{sub 3} in a wide regime. However, additional voltammetric and x-ray photoelectron spectroscopy measurements demonstrate the electrochemical impact of the electrostatic doping approach with ionic liquids.

• OSTI ID: 22398772
• Journal Information: Applied Physics Letters, Vol. 106, Issue 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAPACITANCE
CHARGE DENSITY
ELECTRIC POTENTIAL
ELECTROCHEMISTRY
ELECTRON CORRELATION
LIQUIDS
MODULATION
NEODYMIUM COMPOUNDS
NICKELATES
PHASE STABILITY
PHASE TRANSFORMATIONS
POLAROGRAPHY
X-RAY PHOTOELECTRON SPECTROSCOPY