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Article
Open AccessEffect of Disorder on Magnetotransport in Semiconductor Artificial Graphene
Magnetotransport in mesoscopic samples with semiconductor artificial graphene has been simulated within the Landauer–Büttiker formalism. Model four-terminal systems in a high-mobility two-dimensional electron ...
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Article
Open AccessWannier Diagrams for Semiconductor Artificial Graphene
Quantum transport has been simulated in hexagonal semiconductor lattices of antidots with a period of 80 nm and short-range disorder. Wannier diagrams, i.e., DoS(n, B) maps of the density of states, where n is th...
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Article
Low-Frequency Microwave Response of a Quantum Point Contact
The low-frequency microwave photoconductance of a short (100 nm) quantum point contact based on a high-mobility two-dimensional electron gas in the frequency range of 2–3 GHz is investigated for the first time...
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Article
Photon-Stimulated Transport in a Quantum Point Contact (Brief Review)
Studies of photon-stimulated transport through a quantum point contact based on a high-mobility two-dimensional electron gas in a GaAs quantum well are reviewed. This review includes a brief historical introdu...
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Article
Simulation of the Quantum Hall Effect in Samples with Weak Long-Range Disorder
The fine structure of the density of states is studied numerically in the quantum Hall effect mode during the ballistic transmission of an electron through an area of 1 µm2 of a two-dimensional electron gas with ...
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Article
Photon-Assisted Electron Transmission through a Quantum Point Contact
The theory of coherent photon-assisted electron transmission through a one-dimensional smooth barrier is successfully used to model the results of measuring the terahertz photoconductivity of a tunneling point...
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Article
Steps of the Giant Terahertz Photoconductance of a Tunneling Point Contact
The photoresponse of the conductance of a tunneling quantum point contact to irradiation in the frequency range of 0.5–1.7 THz has been simulated within the theory of photon-assisted tunneling. The simulation ...
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Article
Scaling of the conductance and resistance of square lattices with an exponentially wide spectrum of the resistances of links
The conductance G̅ and \(\overline {{G^{ - 1}}} \) ...
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Article
Percolation and the electron–electron interaction in an array of antidots
A square lattice of microcontacts with a period of 1 μm in a dense low-mobility two-dimensional electron gas is studied experimentally and numerically. At the variation of the gate voltage V ...
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Article
Introscopy in nano- and mesoscopic physics: Single electronics and quantum ballistics
A method is presented to be used in a computational experiment aimed at studying the internal structure of nano- and mesoscopic objects, i.e., conducting subsystems and quantum phenomena in solid submicron obj...
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Article
Response to the comment on “Photon-assisted electron transport through a quantum point contact in a microwave field” (JETP Lett. 102, 378 (2015))
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Article
Photon-assisted electron transport through a quantum point contact in a microwave field
It has been shown by the numerical solution of the time-dependent Schrödinger equation that the transmittance of an electron through a smooth one-dimensional barrier in a microwave field can increase by orders...
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Article
Semiconductor artificial graphene: Effects in weak magnetic fields
Two-dimensional quantum transport through the stripe of the hexagonal lattice of antidots built in the multimode channel in the GaAs/AlGaAs structure has been studied numerically. It has been found that the lo...
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Article
Phase drift and temperature-induced ordering of h/e oscillations in a small ring interferometer
Continuous phase drift and thermal ordering of the Aharonov-Bohm oscillations in a small ring interferometer have been revealed by numerical calculation of the conductance. It has been found that the sign and ...
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Article
Temperature dependence of conductance and thermopower anomalies of quantum point contacts
It has been shown within the Landauer approach that the presence of the 0.7 anomaly in the conductance of a ballistic microcontact and the respective plateau in the thermopower implies pinning of the potential...
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Article
Introscopy of quantum nanoelectronic devices
Semiconductor nanoelectronic quantum devices are one of the achievements of contemporary physics and laboratory nanotechnologies. Short thin current channels are formed by electric fields in the plane of the t...
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Article
Coherent scattering in a small quantum dot
Ballistic transport in an open small (100 nm) three-terminal quantum dot has been analyzed. The dot is based on the high-mobility 2D electron gas of the AlGaAs/GaAs heterojunction. It has been shown that the g...
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Article
Ballistic electron wave functions and negative magnetoresistance in a small ring interferometer
By two-dimensional ballistic magnetotransport calculations, it is demonstrated that large-scale resistance peaks, typical of small ring interferometers in zero magnetic field, are suppressed at B∼1 T. This result...
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Article
Aharonov-Bohm oscillation amplitude in small ballistic interferometers
Small-radius (110 nm) ring interferometers were fabricated by the local anodic oxidation of AlGaAs/GaAs heterostructures containing 2D electron gas. Measurements and modeling show that a small ring asymmetry, ...
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Article
Single-electron charging of triangular quantum dots in a ring interferometer
Small-size semiconductor ring interferometers operating in the Coulomb blockade regime have been experimentally and theoretically studied. The conductance as a function of the gate voltage exhibits narrow quas...
