TY - JOUR
T1 - Time dependent electric fields generated DC currents in a large gate-defined open dot
AU - Liu, Kai Ming
AU - Umansky, Vladimir
AU - Hsu, Shih-ying
PY - 2010/11/1
Y1 - 2010/11/1
N2 - We present the study of DC currents of an open dot generated from two time dependent electric fields in the absence of external bias. Two electrical setups were applied. In one configuration, two fast oscillating voltages were applied on two side gates; in the other, one of the oscillating biases was directly applied to the source lead. The DC current as a function of frequency, coupling strength, and magnetic field was investigated. The current is sinusoidally dependent with the phase shift and bilinearly dependent with the excitation voltage for both configurations. However, the current as a function of frequency, coupling strength, and magnetic fields behaves differently in these two setups. The results indicate that the currents generated in different setups originate from different mechanisms, and moreover, not from any classical circuitry effect.
AB - We present the study of DC currents of an open dot generated from two time dependent electric fields in the absence of external bias. Two electrical setups were applied. In one configuration, two fast oscillating voltages were applied on two side gates; in the other, one of the oscillating biases was directly applied to the source lead. The DC current as a function of frequency, coupling strength, and magnetic field was investigated. The current is sinusoidally dependent with the phase shift and bilinearly dependent with the excitation voltage for both configurations. However, the current as a function of frequency, coupling strength, and magnetic fields behaves differently in these two setups. The results indicate that the currents generated in different setups originate from different mechanisms, and moreover, not from any classical circuitry effect.
UR - http://www.scopus.com/inward/record.url?scp=79551649346&partnerID=8YFLogxK
U2 - 10.1143/JJAP.49.114001
DO - 10.1143/JJAP.49.114001
M3 - Article
AN - SCOPUS:79551649346
SN - 0021-4922
VL - 49
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 11
M1 - 114001
ER -