One-dimensional aligned InAs/InP quantum dots chain growth by metalorganic vapor phase epitaxy for 1.55μm application

Teng, Jinghua; Dong, Jian; Chong, Lip Fah; Chua, S. J.; Wang, Y.J.; Chen, A.

doi:10.1016/j.jcrysgro.2007.04.024

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Under these growth conditions it can be seen that dot nucleation on the restricted area on top of the ridge mesa has not led to a more uniform size distribution compared to the unpatterned area. This is similar to the photoluminescence measurements on QD chains on patterned substrates reported elsewhere [14,21,33,12,13,15]. It therefore appears that the forced alignment of dots in chains by substrate pre-patterning does not a priori result in improved dot uniformity.…”

Section: Device Operationsupporting

confidence: 88%

Fabrication of a self-aligned cross-wire quantum-dot chain light emitting diode by molecular beam epitaxial regrowth

Ikpi¹,

Atkinson²,

Bremner³

et al. 2012

Nanotechnology

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The fabrication of a cross-wire p-i-n light emitting diode (LED) by molecular beam epitaxial overgrowth on mesa-patterned GaAs(100) substrates is presented. Micron-wide mesa stripes fabricated by standard photolithography are subsequently narrowed to sub-micron dimensions by GaAs overgrowth due to net migration towards the mesa top. Chains of InAs quantum dots (QDs) can then be grown in a self-aligned manner on top of the narrow GaAs ridge mesa, forming the active region of the QD-chain LED. The kinetics of the overgrowth is discussed and the electroluminescence operation of the LED is presented.

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Section: Device Operationsupporting

confidence: 88%

Fabrication of a self-aligned cross-wire quantum-dot chain light emitting diode by molecular beam epitaxial regrowth

Ikpi¹,

Atkinson²,

Bremner³

et al. 2012

Nanotechnology

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Solution epitaxy of patterned ZnO nanorod arrays by interference lithography

Goh

Teng

et al. 2012

Progress in Crystal Growth and Characterization of Materials

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Entanglement dynamics of one-dimensional driven spin systems in time-varying magnetic fields

Alkurtass¹,

Sadiek²,

Kais³

2011

Phys. Rev. A

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We study the dynamics of entanglement for a one-dimensional spin chain with a nearest neighbor time-dependent Heisenberg coupling J(t) between the spins in presence of a time-dependent external magnetic field h(t) at zero and finite temperatures. We consider different forms of time dependence for the coupling and magnetic field; exponential, hyperbolic and periodic. We examined the system size effect on the entanglement asymptotic value. It was found that for a small system size the entanglement starts to fluctuate within a short period of time after applying the time dependent coupling. The period of time increases as the system size increases and disappears completely as the size goes to infinity. We also found that when J(t) is periodic the entanglement shows a periodic behavior with the same period, which disappears upon applying periodic magnetic field with the same frequency. Solving the particular case where J(t) and h(t) are proportional exactly, we showed that the asymptotic value of entanglement depends only on the initial conditions regardless of the form of J(t) and h(t) applied at t > 0.

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One-dimensional aligned InAs/InP quantum dots chain growth by metalorganic vapor phase epitaxy for 1.55μm application

Cited by 3 publications

References 19 publications

Fabrication of a self-aligned cross-wire quantum-dot chain light emitting diode by molecular beam epitaxial regrowth

Fabrication of a self-aligned cross-wire quantum-dot chain light emitting diode by molecular beam epitaxial regrowth

Solution epitaxy of patterned ZnO nanorod arrays by interference lithography

Entanglement dynamics of one-dimensional driven spin systems in time-varying magnetic fields

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