Temperature Dependent Polarity Reversal in Au/Nb:SrTiO3 Schottky Junctions
T. Susaki, Y. Kozuka, Y. Tateyama, H. Y. Hwang
TL;DR
This study reveals that the polarity of Au/Nb:SrTiO3 Schottky junctions reverses with temperature due to interface permittivity changes, affecting transport mechanisms and enabling novel junction behaviors.
Contribution
It demonstrates temperature-dependent polarity reversal in Schottky junctions caused by interface permittivity variations, supported by simulations of current-voltage characteristics.
Findings
Polarity reverses with temperature in Au/Nb:SrTiO3 junctions.
Interface permittivity exhibits opposite temperature dependence to bulk.
Tunneling dominates at low temperature due to barrier narrowing.
Abstract
We have observed temperature-dependent reversal of the rectifying polarity in Au/Nb:SrTiO3 Schottky junctions. By simulating current-voltage characteristics we have found that the permittivity of SrTiO3 near the interface exhibits temperature dependence opposite to that observed in the bulk, significantly reducing the barrier width. At low temperature, tunneling current dominates the junction transport due both to such barrier narrowing and to suppressed thermal excitations. The present results demonstrate that novel junction properties can be induced by the interface permittivity.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.