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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Corbino field-effect transistors in a magnetic field
T2 - Highly tunable photodetectors
AU - Winstanley, B.
AU - Schomerus, H.
AU - Principi, A.
N1 - © 2021 American Physical Society
PY - 2021/10/15
Y1 - 2021/10/15
N2 - 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 alternating current terahertz 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.
AB - 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 alternating current terahertz 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.
U2 - 10.1103/PhysRevB.104.165406
DO - 10.1103/PhysRevB.104.165406
M3 - Journal article
VL - 104
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 16
M1 - 165406
ER -