Abstract
We demonstrate electrostatic control of the metal-insulator transition in the typical correlated-electron material NdNiO3 through a large effective capacitance of the electric double layer at the electrolyte/NdNiO 3 interface. The metal-insulator transition temperature (TMI) of NdNiO3 is shown to decrease drastically with increasing hole concentration through the application of a negative gate voltage (V G). The shift in TMI (Δ TMI) is larger for thinner NdNiO 3; for VG of -2.5 V, Δ TMI of 5-nm-thick NdNiO3 is as large as 40 K, and the resistivity change near 95 K is one order of magnitude. This study may be potentially applicable to Mott transistor devices.
| Original language | English |
|---|---|
| Article number | 142110 |
| Journal | Applied Physics Letters |
| Volume | 97 |
| Issue number | 14 |
| DOIs | |
| State | Published - 4 Oct 2010 |
| Externally published | Yes |