Book ChapterDOI
The DRs in Low Dimensional HD Systems in the Presence of Magnetic Field
Kamakhya Prasad Ghatak
- pp 3-113
TLDR
In this article, the DR in nano-wires of HD III-V semiconductors in the presence of cross fields has been investigated in Sect. 1.2.1.Abstract:
In this chapter the DR in Quantum Wells of HD III–V semiconductors in the presence of magnetic field have been formulated in Sect. 1.2.1. On the basis of these fundamental equations, the DR in Nano Wires of HD III–V semiconductors in the presence of magnetic field has been investigated in Sect. 1.2.2. The Sect. 1.2.3 explores the DR in Quantum Dot of HD III–V semiconductors in the presence of magnetic field. The DR in Quantum Wells of HD III–V semiconductors in the presence of cross fields has been investigated in Sect. 1.2.4. The DR in Nano-Wires of HD III–V semiconductors in the presence of cross fields has been studied in Sect. 1.2.5. The DR in Quantum Dot of HD III–V semiconductors in the presence of cross fields has been investigated in Sect. 1.2.6. The DR in Quantum Wells of HD IV–VI semiconductors in the presence of magnetic field has been studied in Sect. 1.2.7. The DR in Nano Wires of HD IV–VI semiconductors in the presence of magnetic field has been investigated in Sect. 1.2.8. The DR in Quantum Dot of HD IV–VI semiconductors in the presence of magnetic field has been studied in Sect. 1.2.9. The DR in cylindrical Quantum Dot of III–V semiconductors in the presence of crossed electric and magnetic fields has been investigated in Sect. 1.2.10. The DR in Quantum Wells of HD III–V Semiconductors in the presence of arbitrarily oriented magnetic field has been studied in Sect. 1.2.11. The Sect. 1.4 contains 16 open research problems, which form the integral part of this chapter.read more
Citations
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Measurement of the Quantum of Thermal Conductance
Abstract: The physics of mesoscopic electronic systems has been explored for more than 15 years. Mesoscopic phenomena in transport processes occur when the wavelength or the coherence length of the carriers becomes comparable to, or larger than, the sample dimensions. One striking result in this domain is the quantization of electrical conduction, observed in a quasi-one-dimensional constriction formed between reservoirs of two-dimensional electron gas. The conductance of this system is determined by the number of participating quantum states or ‘channels’ within the constriction; in the ideal case, each spin-degenerate channel contributes a quantized unit of 2e2/h to the electrical conductance. It has been speculated that similar behaviour should be observable for thermal transport in mesoscopic phonon systems. But experiments attempted in this regime have so far yielded inconclusive results. Here we report the observation of a quantized limiting value for the thermal conductance, Gth, in suspended insulating nanostructures at very low temperatures. The behaviour we observe is consistent with predictions for phonon transport in a ballistic, one-dimensional channel: at low temperatures, Gth approaches a maximum value of g0 = π2k 2BT/3h, the universal quantum of thermal conductance.
References
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Journal ArticleDOI
GaAs, AlAs, and AlxGa1−xAs: Material parameters for use in research and device applications
TL;DR: In this article, a review of the properties of the Al x Ga1−x As/GaAs heterostructure system is presented, which can be classified into sixteen groups: (1) lattice constant and crystal density, (2) melting point, (3) thermal expansion coefficient, (4), lattice dynamic properties, (5) lattices thermal properties,(6) electronic-band structure, (7) external perturbation effects on the bandgap energy, (8) effective mass, (9) deformation potential, (10) static and
Book
Quantum dot heterostructures
TL;DR: In this paper, the growth and structural characterisation of self-organized Quantum Dots are discussed. But they do not consider the model of ideal and real quantum Dots.
Journal ArticleDOI
Long-term multiple color imaging of live cells using quantum dot bioconjugates
TL;DR: Two approaches presented are endocytic uptake of QDs and selective labeling of cell surface proteins with QDs conjugated to antibodies, which should permit the simultaneous study of multiple cells over long periods of time as they proceed through growth and development.
Journal ArticleDOI
Carbon nanotube quantum resistors
TL;DR: The conductance of multiwalled carbon nanotubes (MWNTs) was found to be quantized and Extremely high stable current densities, J > 10(7) amperes per square centimeter, have been attained.
Journal ArticleDOI
Ultrasensitive solution-cast quantum dot photodetectors
Gerasimos Konstantatos,Ian A. Howard,Armin Fischer,Sjoerd Hoogland,Jason Paul Clifford,Ethan J. D. Klem,Larissa Levina,Edward H. Sargent +7 more
TL;DR: The tailored selection of absorption onset energy through the quantum size effect, combined with deliberate engineering of the sequence of nanoparticle fusing and surface trap functionalization, underlie the superior performance achieved in this readily fabricated family of devices.
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