ELECTRON BIPRISM OPERATION OF SPLIT-GATE HETEROSTRUCTURES HAVING A SINGLE IMPURITY WITHIN THE CHANNEL

Date

1994-11-01

Author

BULUTAY, C
GUNALP, N
Tomak, Mehmet

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

44
views

0
downloads

In the phase-coherent transport regime the possibility of a solid-state electron biprism employing an intentionally implanted impurity in a split-gate heterostructure is theoretically studied. The impurity-assisted interference phenomenon has been investigated under several impurity profiles and positions within the constriction. The effect of gate width on quenching the interference has also been considered. A quantitative explanation is offered which is based on the Fourier analysis of the wave function at the aperture and the guided-mode dynamics within the constriction.

Subject Keywords

Scanning tunneling microscope, Atomic-scale manipulation, Quantized conductance, Point contacts, Transport, Holography, Scattering

URI

https://hdl.handle.net/11511/38614

Journal

JOURNAL OF APPLIED PHYSICS

DOI

https://doi.org/10.1063/1.357182

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

Accurate formation energies of charged defects in solids: A systematic approach Vinichenko, Dmitry; Sensoy, Mehmet Gokhan; Friend, Cynthia M.; Kaxiras, Efthimios (2017-06-30) Defects on surfaces of semiconductors have a strong effect on their reactivity and catalytic properties. The concentration of different charge states of defects is determined by their formation energies. First-principles calculations are an important tool for computing defect formation energies and for studying the microscopic environment of the defect. The main problem associated with the widely used supercell method in these calculations is the error in the electrostatic energy, which is especially pronou...
Quantum chemical treatment of cyanogen azide and its univalent and divalent ionic forms Türker, Burhan Lemi; Atalar, Taner (Elsevier BV, 2008-05-30) An explosive material, cyanogen azide (CN4) and its univalent and divalent anionic and cationic forms have been studied quantum chemically by using different theoretical approaches. In this study, the structures considered have been screened for their relative stabilities. Also, they have been investigated whether the charged forms play a role in the usual explosion process or any electrical charging during storage cause explosion. Various quantum chemical properties are obtained and discussed. It has been ...
Theoretical electronic spectra for models having ferredoxin-core Türker, Burhan Lemi (2002-10-31) Ferredoxin-core model [Fe4S4] type iron-sulfur cluster having four cysteine moieties in the amide form, has been considered theoretically for electronic excitation spectrum. The neutral as well as the -/+ 2 charged forms of the model have been investigated within the restrictions of ZINDO/S (RHF) approach involving configuration interaction considerations. The charged forms, especially the negative one exhibited some bathochromic shift and hyperchromic effect.
Hydrogen adsorption on Co2+ - and Ni2+- exchanged -US-Y and -ZSM-5. A combined sorption, DR UV–Vis, synchrotron XRD and DFT study Sarohan, Nurkan; Özbek, Murat Oluş; Kaya, Yasemin; Abdellatief, Mahmoud; İpek Torun, Bahar (2022-08-01) Hydrogen adsorption on Co2+and Ni2+exchanged Ultrastable-Y (US–Y) and ZSM-5 are investigated experimentally at 298K and up to 50bar as well as theoretically. The experimentally calculated initial isosteric heat of H2adsorption values are between −28 and −32kJ/mol for Ni2+-ZSM-5, -16kJ/mol for Co2+-ZSM-5, -23kJ/mol for Ni2+-US-Y and −18kJ/mol for Co2+-US-Y. Due to the optimumheat of adsorptionvalues observed on Co2+and Ni2+exchanged US-Y and ZSM-5, a reversiblevolumetricH2storage capacity of 20g H2/L is achi...
Oxygen vacancies on Pd/TiO2 are detected at low pressures by ESR spectroscopy at ambient temperatures Üner, Deniz; Yarar, Melis (2022-1-01) All rights reserved.A low field benchtop electron spin resonance (ESR) (also referred to as electron paramagnetic resonance (EPR)) spectrometer is used to reveal paramagnetic centres such as oxygen vacancies and Ti+3 centres over 0.5%Pd/TiO2. The measurement was performed at room temperature after the sample was reduced in situ under mild hydrogen pressures and evacuated to P < 10–6 Torr. The measurement was possible due to a T1 compensation effect under vacuum: Correlation times at low pressures enabled su...

Citation Formats

C. BULUTAY, N. GUNALP, and M. Tomak, “ELECTRON BIPRISM OPERATION OF SPLIT-GATE HETEROSTRUCTURES HAVING A SINGLE IMPURITY WITHIN THE CHANNEL,” JOURNAL OF APPLIED PHYSICS, pp. 5309–5317, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38614.