Results 111 to 120 of about 36,563 (205)

Spin transport and accumulation in the persistent photoconductor Al$_{0.3}$Ga$_{0.7}$As

open access: yes, 2013
Electrical spin transport and accumulation have been measured in highly Si doped Al0.3Ga0.7As utilizing a lateral spin transport device. Persistent photoconductivity allows for the tuning of the effective carrier density of the channel material in situ ...
Chen, Lin   +8 more
core   +1 more source

Spin characterization and control over the regime of radiation-induced zero-resistance states

open access: yes, 2004
Over the regime of the radiation-induced zero-resistance states and associated oscillatory magnetoresistance, we propose a low magnetic field analog of quantum-Hall-limit techniques for the electrical detection of electron spin- and nuclear magnetic ...
Mani, R. G.
core   +1 more source

GaAs/AlGaAs- и InGaAs/AlGaAs-гетероструктуры для мощных полупроводниковых инфракрасных излучателей

open access: yesЖурнал технической физики, 2021
Определен внутренний квантовый выход люминесценции GaAs/AlGaAs- и InGaAs/AlGaAs-гетероструктур для инфракрасных светодиодов. Исследовано влияние ростовых условий гетероструктур, выращенных методом молекулярно-лучевой эпитаксии и пост-ростового отжига на квантовый выход гетероструктур.
openaire   +2 more sources

Gate voltage tuning of photo-responses in n-AlGaAs/GaAs/AlGaAs double-heterojunction

open access: yesAIP Advances
We demonstrate that the gate voltage Vg tunes the Schottky photocurrent ISG for the irradiation of two lights (Light A and B) in an n-AlGaAs/GaAs/AlGaAs double-heterojunction.
Takuya Kawazu
doaj   +1 more source

Numerical Analysis of AlGaAs/InGaAs/GaAs pHEMT

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника
Introduction. In most technological processes, the parameters of transistors may exhibit variations in values. As a result, integrated circuit (IC) parameters may spread beyond the nominal values stated in the technological specification.
A. V. Sapozhnikov   +3 more
doaj   +1 more source

Gating of high-mobility two-dimensional electron gases in GaAs/AlGaAs heterostructures

open access: yes, 2010
We investigate high-mobility two-dimensional electron gases in AlGaAs heterostructures by employing Schottky-gate-dependent measurements of the samples' electron density and mobility.
C Rössler   +7 more
core   +1 more source

A study of transport suppression in an undoped AlGaAs/GaAs quantum dot single-electron transistor

open access: yes, 2013
We report a study of transport blockade features in a quantum dot single-electron transistor, based on an undoped AlGaAs/GaAs heterostructure. We observe suppression of transport through the ground state of the dot, as well as negative differential ...
Aagesen, M.   +5 more
core   +1 more source

Efficient Electrical Spin Injection from a Magnetic Metal / Tunnel Barrier Contact into a Semiconductor

open access: yes, 2002
We report electrical spin injection from a ferromagnetic metal contact into a semiconductor light emitting diode structure with an injection efficiency of 30% which persists to room temperature.
Hanbicki, Aubrey T.   +4 more
core   +1 more source

Intersubband transitions in pseudomorphic InGaAs/GaAs/AlGaAs multiple step quantum wells [PDF]

open access: yes, 1993
Intersubband transitions from the ground state to the first and second excited states in pseudomorphic AlGaAs/InGaAs/GaAs/AlGaAs multiple step quantum wells have been observed.
Chen, Y. W.   +3 more
core  

Influence of Barrier Width on QWIP Operating Voltage

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника
Introduction. Quantum well infrared photodetectors (QWIP) are characterized by a wide application range. A large market demand for such photodetectors determines the importance of elucidating the principle of their operation.Aim.
L. S. Bogoslovskaya   +2 more
doaj   +1 more source

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