Fabrication technique for nanometer-scale InAs quantum devices: Observation of quantum interference in Aharonov–Bohm rings and Coulomb blockade in quantum dots

Chang, Tay-Rong; Chen, K. A.; Yang, Chaoqun; Yang, Meijun; Park, D.

doi:10.1116/1.1321285

Cited by 2 publications

(1 citation statement)

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“…In the past two decades, in connection with the dis covery of the "Coulomb blockage" phenomenon for semiconductor quantum dots and fabrication of experimental samples of cryogenic single electron transistors based on this phenomenon [1][2][3][4][5], design ers started attempts to use metal nanoparticles, mainly of noble metals Ag, Pd, Ir, Pt, and Au [6,7], in order to fabricate a single electron transistor operating at room temperature. Their sizes can be brought to 1 or even to 0.5 nm.…”

Section: Introductionmentioning

confidence: 99%

I–V characteristics and the spectrum width during electron tunneling through nanosandwiches W-WO2-(Au 147 − )-Al2O3-Al and Nd-Nd2O3-(Au 55 − )-Nd2O3-Nd. Part I: Quantum-chemical calculation of energies of orbitals for anions of nanoclusters Au55 and Au147

Жуков

Маслов

2012

Russ Microelectron

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This work is devoted to the investigation of electron tunneling through "magical" nanoclusters Au 55 and Au 147 . Using the quantum chemical calculation, it is shown that the energy of the highest occupied molec ular orbital (HOMO) level is eV and eV, respectively. It is established that the difference between energy of the lowest unoccupied level LUMO and energy for the anions of clusters ( and ) is 0.86 and 0.24 eV, respectively. Based on the results of the calculations, it is assumed that nanosandwiches W-WO 2 -( )-Al 2 O 3 -Al can be promising structures for implementation of metal nanodiodes based on them, while nanosandwiches Nd-Nd 2 O 3 -( )-Nd 2 O 3 -Nd can be promis ing for implementation of energy filters not producing hot electrons and allowing the fabrication of the ring Aharonov-Bohm interferometers based on normal metals at liquid helium temperatures.

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Section: Introductionmentioning

confidence: 99%

I–V characteristics and the spectrum width during electron tunneling through nanosandwiches W-WO2-(Au 147 − )-Al2O3-Al and Nd-Nd2O3-(Au 55 − )-Nd2O3-Nd. Part I: Quantum-chemical calculation of energies of orbitals for anions of nanoclusters Au55 and Au147

Жуков

Маслов

2012

Russ Microelectron

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Cryogenic scanning tunneling microscope for quantum dot spectroscopy

Chang

Yang

et al. 2001

Review of Scientific Instruments

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We have designed and fabricated a cryogenic scanning tunneling microscope for probing lithography defined nanometer-scale devices. The piezoelectric double tube is capable of scanning an area up to 22 mϫ22 m, while maintaining atomic resolution. In addition, the sample mount has a 5 mmϫ4 mm traveling range. Most importantly, the system is compact and, as a result, it can be inserted into the bore of a superconducting magnet. In this work, we demonstrate a unique application of scanning tunneling system, i.e., the scanning tip is in direct contact with the sample. The spectroscopic information therefore reflects the true characteristics of the devices under test, unlike the typical case where the tunneling barrier through vacuum imposes a large series resistance, on the order of 10 9 ⍀. The design as well as the operation of this compact scanning tunneling microscope is described.

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Fabrication technique for nanometer-scale InAs quantum devices: Observation of quantum interference in Aharonov–Bohm rings and Coulomb blockade in quantum dots

Abstract: Articles you may be interested inCoulomb-modified equilibrium and nonequilibrium properties in a double quantum dot Aharonov-Bohm-Fano interference device

Cited by 2 publications

References 24 publications

I–V characteristics and the spectrum width during electron tunneling through nanosandwiches W-WO2-(Au 147 − )-Al2O3-Al and Nd-Nd2O3-(Au 55 − )-Nd2O3-Nd. Part I: Quantum-chemical calculation of energies of orbitals for anions of nanoclusters Au55 and Au147

I–V characteristics and the spectrum width during electron tunneling through nanosandwiches W-WO2-(Au 147 − )-Al2O3-Al and Nd-Nd2O3-(Au 55 − )-Nd2O3-Nd. Part I: Quantum-chemical calculation of energies of orbitals for anions of nanoclusters Au55 and Au147

Cryogenic scanning tunneling microscope for quantum dot spectroscopy

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