Title Theory of magnetoelectric photocurrent generated by direct interband transitions in a semiconductor quantum well
نویسندگان
چکیده
منابع مشابه
Magnetoelectric photocurrent generated by direct interband transitions in InGaAs/InAlAs two-dimensional electron gas.
We report the observation of magnetoelectric photocurrent generated via direct interband transitions in an InGaAs/InAlAs two-dimensional electron gas by a linearly polarized incident light. The electric current is proportional to the in-plane magnetic field, which unbalances the velocities of the photoexcited carriers with opposite spins and consequently generates the electric current from a hi...
متن کاملHelicity-dependent photocurrent induced by the in-plane transverse electric current in an InAs quantum well
We report the observation of a new type of helicity-dependent photocurrent induced by an in-plane transverse direct electric current in an InAs quantum well. The amplitude of the photocurrent depends linearly on the transverse current. Moreover, the observed incident azimuth-angle dependence of this photocurrent is different from that induced by the circular photogalvanic effect. This new photo...
متن کاملIntraband and interband photocurrent spectroscopy and induced dipole moments of InAsÕGaAs„001... quantum dots in n – i – n photodetector structures
We have investigated normal-incidence intraand interband spectra of self-assembled steep InAs/ GaAs~001! quantum dots ~QDs! with an average height of ;8.0 nm and average base width of ;21 nm placed in n – i(QDs) – n photodetector structures. The ground state occupation of the QDs in the n – i(QDs) – n configuration is examined and used to assign observed intraband transitions. A photovoltaic ef...
متن کاملOptical and Photocurrent Spectroscopy Studies of Inter- and Intra-Band Transitions in Size-Tailored InAs/GaAs Quantum Dots
Combined interand intra-band spectroscopy studies are presented on structurally well-characterized InAs/GaAs(001) self-assembled quantum dots grown via conventional continuous deposition and the innovative punctuated island growth approach. Temperature and power dependent photoluminescence (PL) and PL Excitation (PLE) on these remarkably uniform quantum dot based samples (with typical PL linewi...
متن کاملThe Effect of Structural Parameters on the Electronic States and Oscillator Strength of a Resonant Tunneling Quantum Well Infrared Photodetector
In this paper a resonant tunnelling quantum well infrared photodetector (RT-QWIP) is discussed. Each period of this photodetector structure comprises of a resonant tunnelling structure (AlAs/AlGaAs/AlAs) nearby a quantum well (AlGaAs/GaAs). In this photodetector, photocurrent is produced when an electron makes a transition from the ground state of the well to an excited state which is coupled t...
متن کامل