Výsledky vyhledávání - "Yu. V. Dubrovskii"

Wavelet analysis and its application in tunneling and x-ray spectroscopy

Autor: Yu. V. Dubrovskii, Marina Chukalina, H. Funke

Publikováno v: Low Temperature Physics. 30:930-936

The capabilities and limitations of wavelet analysis are demonstrated for the illustrative case of two practial applications: investigation of magneto-tunneling signals and the extended x-ray absorption fine structure (EXAFS) of uranium. A brief intr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6b71110eb99732e35265cda9406dffe7
https://doi.org/10.1063/1.1820026

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Resonant tunneling of electrons through virtual interference states formed as a result of reflection from the boundary of strongly doped region of GaAs

Autor: Yu. N. Khanin, Yu. V. Dubrovskii, E. E. Vdovin

Publikováno v: Journal of Experimental and Theoretical Physics. 99:530-538

The paper is devoted to analysis of the electron transport through one-barrier GaAs/AlAs/GaAs heterostructures. The oscillating component of transport characteristics of symmetric one-barrier GaAs/AlAs/GaAs heterostructures with spacers, which is ass

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4618a166d89e94472050a6b381d2d42
https://doi.org/10.1134/1.1809681

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Resonant Γ-X tunneling in single-barrier GaAs/AlAs/GaAs heterostructures

Autor: Yu. N. Khanin, E. E. Vdovin, Yu. V. Dubrovskii

Publikováno v: Semiconductors. 38:419-430

The electron transport through single-barrier GaAs/AlAs/GaAs heterostructures is studied. This transport is caused by resonant tunneling between the two-dimensional states related to the Γ valley of the GaAs conduction band and various two-or zero-d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30808a3f7181538b7bf82888a1916d70
https://doi.org/10.1134/1.1734669

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Zero bias anomalies of transport characteristics of single-barrier GaAs/AlAs/GaAs heterostructures as a result of resonance tunneling between parallel two-dimensional electron gases and suppression of resonance tunneling in a magnetic field as a manifestation of the Coulomb gap in the tunnel density of states

Autor: Yu. N. Khanin, Yu. V. Dubrovskii, E. E. Vdovin

Publikováno v: Semiconductors. 37:692-698

Electron tunnel transport across single-barrier GaAs/AlAs/GaAs heterostructures is investigated. It is shown that “zero bias anomalies”—extrema in differential conductivity close to the zero bias—in the structures investigated are caused by r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3396f09c71c997cea1743e7de174ecc
https://doi.org/10.1134/1.1582537

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Spatial mapping of the electron eigenfunctions in InAs self-assembled quantum dots by magnetotunnelling

Autor: A. V. Veretennikov, Yu. N. Khanin, Mohamed Henini, E. E. Vdovin, G. Hill, Yu. V. Dubrovskii, Andrew Levin, Laurence Eaves, P. C. Main, Amalia Patanè

Publikováno v: Nanotechnology. 14:16-19

We use magnetotunnelling spectroscopy as a non-invasive probe to produce two-dimensional spatial images of the probability density of an electron confined in a self-assembled semiconductor quantum dot. The images reveal clearly the elliptical symmetr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fef2e18b6e4f61a0fb75fdb7585bb48
https://doi.org/10.1088/0957-4484/14/1/304

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Conductance anomalies in gated V-groove quantum wires

Autor: G. Hill, J.S. Roberts, Sergey V. Morozov, Peter A. Houston, Ivan A. Larkin, V V Larkin, D. Yu. Ivanov, Yu. V. Dubrovskii, John H. Jefferson

Publikováno v: Nanotechnology. 13:487-490

We present transconductance measurements on gated V-groove GaAs/AlGaAs quantum wire heterostructures grown by metal-organic chemical vapour deposition. The results show anomalously large negative magnetoresistance for a magnetic field perpendicular t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::129473a80c0c4b35cc837dae13260595
https://doi.org/10.1088/0957-4484/13/4/309

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Magnetic field induced linear Coulomb gap in tunnelling between disordered two-dimensional electron systems

Autor: D. Yu. Ivanov, P. C. Main, J. C. Portal, Mohamed Henini, Duncan K. Maude, G. Hill, Laurence Eaves, E. E. Vdovin, V. A. Volkov, Yu. V. Dubrovskii, V. G. Popov, Richard Hill

Publikováno v: Physica E: Low-dimensional Systems and Nanostructures. 12:300-303

We have investigated equilibrium tunnelling between disordered two-dimensional electron systems at temperatures below 0:3 K over a wide range of magneticeld, B, applied perpendicular to the electron layers. In zeroeld, we observe a narrow conductance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::41ceef08deedb967c7f95787622d1b63
https://doi.org/10.1016/s1386-9477(01)00350-2

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Probing the electronic properties of disordered two-dimensional systems by means of resonant tunnelling

Autor: Andrew Levin, V. V. Sirotkin, Mohamed Henini, P. N. Brounkov, Yu. N. Khanin, P. C. Main, G. Hill, Amalia Patanè, Laurence Eaves, Ivan A. Larkin, D. K. Maude, D. Yu. Ivanov, E. E. Vdovin, J. C. Portal, Yu. V. Dubrovskii

Publikováno v: Nanotechnology. 12:491-495

We investigate resonant tunnelling in GaAs/(AlGa)As double-barrier resonant-tunnelling diodes in which a single layer of InAs self-assembled quantum dots is embedded in the centre of the GaAs quantum well. The dots provide a well-defined and controll

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1ec8a2d9e9278a319a0ee568d7b090d4
https://doi.org/10.1088/0957-4484/12/4/322

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Anisotropy of electronic wave functions in self-assembled InAs dots embedded in the center of a GaAs quantum well studied by magnetotunneling spectroscopy

Autor: E. E. Vdovin, Mohamed Henini, A. V. Veretennikov, Andrew Levin, Laurence Eaves, P. C. Main, Yu. V. Dubrovskii, Yu. N. Khanin, Amalia Patanè, G. Hill

Publikováno v: Journal of Experimental and Theoretical Physics Letters. 74:41-45

We present an experimental study of electron wave functions in InAs/GaAs self-assembled quantum dots by magnetotunneling spectroscopy. The electronic wave functions have a biaxial symmetry in the growth plane, with axes corresponding to the main crys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35f0954ebd78ba095b9be548a1f60004
https://doi.org/10.1134/1.1402204

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