Corbino FETs in magnetic field: highly tunable photodetectors

Bailey Winstanley, Henning Schomerus, Alessandro Principi

Research output: Contribution to journalArticlepeer-review

Abstract

We study gated field effect transistors (FETs) with an eccentric Corbino-disk geometry, such that the drain spans its circumference while the off-center inner ring acts as a source. An AC THz potential difference is applied between source and gate while a static source-drain voltage, rectified by the nonlinearities of FET electrons, is measured. When a magnetic field is applied perpendicular to the device, a strong resonance appears at the cyclotron frequency. The strength of the resonance can be tuned by changing the eccentricity of the disk. We show that there is an optimum value of the eccentricity that maximizes the responsivity of the FET.
Original languageEnglish
JournalPhysical Review B
Publication statusAccepted/In press - 24 Aug 2021

Fingerprint

Dive into the research topics of 'Corbino FETs in magnetic field: highly tunable photodetectors'. Together they form a unique fingerprint.

Cite this