Spectral characteristics of conductance fluctuations in ballistic quantum dots

1994 ◽  
Vol 50 (24) ◽  
pp. 18678-18681 ◽  
Author(s):  
J. P. Bird ◽  
K. Ishibashi ◽  
Y. Aoyagi ◽  
T. Sugano ◽  
Y. Ochiai
Keyword(s):  
Quantum Dots ◽  
Spectral Characteristics ◽  
Conductance Fluctuations

Spectral characteristics of conductance fluctuations in ballistic quantum dots: The influence of finite magnetic field and temperature

1995 ◽  
Vol 52 (11) ◽  
pp. 8295-8304 ◽  
Author(s):  
J. P. Bird ◽  
K. Ishibashi ◽  
D. K. Ferry ◽  
Y. Ochiai ◽  
Y. Aoyagi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Spectral Characteristics ◽  
Conductance Fluctuations

Statistics of conductance fluctuations in quantum dots

1993 ◽  
Vol 71 (8) ◽  
pp. 1230-1233 ◽  
Author(s):  
V. N. Prigodin ◽  
K. B. Efetov ◽  
S. Iida
Keyword(s):  
Quantum Dots ◽  
Conductance Fluctuations

scholarly journals Photo-induced conductance fluctuations in mesoscopic Ge/Si systems with quantum dots

2014 ◽  
Author(s):  
N. P. Stepina ◽  
A. V. Dvurechenskii ◽  
A. I. Nikiforov ◽  
J. Moers ◽  
D. Gruetzmacher
Keyword(s):  
Quantum Dots ◽  
Conductance Fluctuations

scholarly journals Researching CdZnS/ZnS (GT) Quantum Dots in Cathodoluminescent Mode

2019 ◽  
Vol 8 (9S2) ◽  
pp. 841-843
Keyword(s):  
Quantum Dots ◽  
Research And Development ◽  
Uv Light ◽  
Spectral Characteristics ◽  
Light Sources ◽  
Application Field ◽  
Medium Pressure

Application field of UV light sources is getting larger at the last decades. Among the most widespread are high and medium pressure vacuum lamps. But there currently is a trend of moving away from using mercury both in household applications and manufacturing. This creates a necessity to conduct research and development for UV sources made and operating without Hg. Cathodoluminescent UV sources are in this category. One of the possible ways to create a viable UV anode phosphor is using quantum dots with needed spectral characteristics.

scholarly journals Исследование электрофизических свойств квантовых точек антимонида индия: значение формы

2021 ◽  
Vol 55 (3) ◽  
pp. 237
Author(s):  
В.Ф. Кабанов ◽  
А.И. Михайлов ◽  
М.В. Гавриков
Keyword(s):  
Electron Microscopy ◽  
Quantum Dots ◽  
Indium Antimonide ◽  
Spectral Characteristics ◽  
Characteristic Size ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Transmission Electron ◽  
Particle Size Analyzer ◽  
Characteristics Analysis

In this work, we studied the influence of the shape of the indium antimonide quantum dots of on some important electrophysical parameters by spectral characteristics analysis, transmission electron microscopy, scanning tunneling microscopy, a laser particle size analyzer, and scanning electron microscopy. It is shown that the real form of quantum dots (spherical and cubic models) at the same characteristic size will noticeably affect the energy spectrum of the investigated objects and, accordingly, their electrophysical and optical properties.

scholarly journals SYNTHESIS AND SPECTRAL CHARACTERISTICS OF PERSPECTIVE NANOSIZED CARBON QUANTUM DOTS FOR ADSORPTION AND CATALYTIC PROCESSES

2020 ◽  
Vol 86 (1) ◽  
pp. 3-11
Author(s):  
Volodymyr Ogenko ◽  
Svitlana Orysyk ◽  
Ljudmila Kharkova ◽  
Oleg Yanko
Keyword(s):  
Quantum Dots ◽  
Bathochromic Shift ◽  
Spectral Characteristics ◽  
Carbon Quantum Dots ◽  
Hypsochromic Shift ◽  
Absorption Bands ◽  
Rhodium Chloride ◽  
Electron Transitions ◽  
Trivalent State ◽  
Adsorption Processes

Processes of interaction between carbon quantum dots (CQDs) and solutions of rhodium, ruthenium and palladium chlorides in the surface layer have been investigated by electron and IR spectroscopy. When rhodium chloride is added to a solution of CQDS, a bathochromic shift of the β- and p-absorption bands (ABs) at 48725 and 41711 cm-1 as well as hypsochromic shift of the α-AB at 28935 cm-1 indicate that rhodium adsorption occurs on the surface of CQDs. The bathochromic shift of the absorption bands at 22400 сm1 together with the hypsochromic shift of ABs corresponding to d-d electron transitions in the metal ions indicates the formation of rhodium with CQDs. When ruthenium and palladium chlorides are added to an aqueous solution of CQDs, the intensive of ABs characterizing the complex anions [RuCl6]3-, [RuCl6]2- or [PdCl4]2- are absent in the UV-Vis spectra. This indicates the passage of adsorption processes of metals on the surface of CQDs.  The present of ABs (at 27055 and 25125 сm-1) indicate the trivalent state of ruthenium ion; the p-ABs bathochromic shift as well as α-ABs hypsochromic shift indicates the probable complex formation of CQDs with Ru3+ ions. The change in the position of the absorption bands of d-d electron transitions (at 25448 сm1) together with the bathochromic shift of p-ABs and hypsochromic shift of α-ABs indicates a change in coordination environment in the palladium ion with the possible formation of Pd → N bond. The IR-spectra data of CQDs showed the presence of a number of characteristic ABs for functionalized CQDs: ν(N–H) at 3260 сm1, (C=O) at 1830, 1840 and 1850 сm1, –С=O(NH) at 1770 сm1, ν(C=N) at 1680 and δ(N–H) at 1640 сm1, which confirms the coordination of metals on the surface of CQDs.

The Magnetic Field Dependent Characteristics of Conductance Fluctuations in Ballistic Quantum Dots

1995 ◽  
Vol 34 (Part 1, No. 8B) ◽  
pp. 4342-4344
Author(s):  
Jonathan P. Bird ◽  
Koji Ishibashi ◽  
Yuichi Ochiai ◽  
Yoshinobu Aoyagi ◽  
Takuo Sugano
Keyword(s):  
Magnetic Field ◽  
Quantum Dots ◽  
Conductance Fluctuations ◽  
Field Dependent ◽  
The Magnetic Field

Coupling effects on the conductance fluctuations in GaAs/AlGaAs double quantum dots

2002 ◽  
Vol 60 (3-4) ◽  
pp. 347-355 ◽  
Author(s):  
Tomomitsu Risaki ◽  
Tetsuya Ida ◽  
Koji Ishibashi ◽  
Takuo Sugano
Keyword(s):  
Quantum Dots ◽  
Double Quantum ◽  
Coupling Effects ◽  
Double Quantum Dots ◽  
Conductance Fluctuations
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