Temat: 85.35.Ds - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Linear and Non-Linear Response in T-Shaped Electron Waveguides
Autorzy:: Bek, M.
Bułka, B.
Wróbel, J.
Powiązania:: https://bibliotekanauki.pl/articles/1791289.pdf
Data publikacji:: 2009-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.23.-b
73.63.Rt
85.35.Ds
85.35.Be
Opis:: We present theoretical studies of three-terminal ballistic junction in linear and non-linear regime. Various conductance and voltage dips and peaks are observed and their origin is explained as influence of the bend resistance and the threshold effect.
Źródło:: Acta Physica Polonica A; 2009, 116, 5; 829-831
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Aharonov-Bohm Effect and Valley Polarization in Nanoscopic Graphene Rings
Autorzy:: Rycerz, A.
Powiązania:: https://bibliotekanauki.pl/articles/1810559.pdf
Data publikacji:: 2009-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.23.-b
73.63.Rt
85.35.Ds
Opis:: The conductance of an Aharonov-Bohm interferometer is studied in a tight-binding model of graphene. Two point contacts with zigzag edges, which function as valley filters, are connected by a ring with an irregular boundary. We find that the narrowest rings show strong current suppression and nearly sinusoidal magnetoconductance oscillations, whereas for wide rings higher harmonics are equally represented. In the intermediate width range, oscillations with a basic periodicity are suppressed when two valley filters have opposite polarity, while higher harmonics are unaffected. The effect is interpreted in terms of a relatively weak intervalley scattering in the system.
Źródło:: Acta Physica Polonica A; 2009, 115, 1; 322-325
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Spin Thermoelectric Effects in a Strongly Correlated Double Quantum Dot System
Autorzy:: Karwacki, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/1386717.pdf
Data publikacji:: 2015-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.23.-b
73.63.Kv
72.15.Qm
85.35.Ds
Opis:: Spin thermoelectric effects through a strongly correlated double quantum dot system embedded in a Aharonov-Bohm ring coupled to two leads with Rashba spin-orbit coupling have been investigated theoretically by means of the finite-U slave-boson technique. This method provides a reliable description of electron transport through quantum dot systems in the low temperature regime T ≪ $T_{K}$, where $T_{K}$ is the so-called Kondo temperature. Particular emphasis is put on the possibility of the so-called spin Seebeck effect in such a system as a more sensitive probe of the Kondo state.
Źródło:: Acta Physica Polonica A; 2015, 127, 2; 478-480
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Thermoelectric and Interference Effects in a Kondo-Correlated Quantum Dot with Rashba Spin-Orbit Coupling
Autorzy:: Karwacki, Ł.
Trocha, P.
Barnaś, J.
Powiązania:: https://bibliotekanauki.pl/articles/1399158.pdf
Data publikacji:: 2013-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.23.-b
73.63.Kv
72.15.Qm
85.35.Ds
Opis:: Thermoelectric effects in spin-polarized transport through a strongly correlated quantum dot coupled to two ferromagnetic leads is investigated theoretically by means of the finite-U slave boson technique. The dot is coupled to the leads both symmetrically via the spin-conserving tunneling processes and asymmetrically via spin-nonconserving Rashba-induced tunneling terms. The asymmetric coupling leads to various interference effects which modify transport properties. We have analyzed such thermoelectric coefficients like the electronic contribution to heat conductance κ, thermopower S, and thermoelectric efficiency ZT.
Źródło:: Acta Physica Polonica A; 2013, 124, 5; 901-904
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 5.

Tytuł:: Scanning-Gate Microscopy of Semiconductor Nanostructures: An Overview
Autorzy:: Martins, F.
Hackens, B.
Sellier, H.
Liu, P.
Pala, M. G.
Baltazar, S.
Desplanque, L.
Wallart, X.
Bayot, V.
Huant, S.
Powiązania:: https://bibliotekanauki.pl/articles/2047914.pdf
Data publikacji:: 2011-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.21.La
73.23.Ad
03.65.Yz
85.35.Ds
Opis:: This paper presents an overview of scanning-gate microscopy applied to the imaging of electron transport through buried semiconductor nanostructures. After a brief description of the technique and of its possible artifacts, we give a summary of some of its most instructive achievements found in the literature and we present an updated review of our own research. It focuses on the imaging of GaInAs-based quantum rings both in the low magnetic field Aharonov-Bohm regime and in the high-field quantum Hall regime. In all of the given examples, we emphasize how a local-probe approach is able to shed new, or complementary, light on transport phenomena which are usually studied by means of macroscopic conductance measurements.
Źródło:: Acta Physica Polonica A; 2011, 119, 5; 569-575
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 6.

Tytuł:: Josephson-Like Effect in Mesoscopic Loop Structures
Autorzy:: Paśko, W.
Powiązania:: https://bibliotekanauki.pl/articles/2044516.pdf
Data publikacji:: 2005-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 78.47.+p
03.67.-a
73.23.Ad
75.47.Jn
85.35.Ds
Opis:: The quantum interference is considered in time-dependent magnetic field that is quantum beats in mesoscopic loop structure. The similarities between this effect and Josephson, scalar Aharonov-Bohm and Aharonov-Casher effects, as well as their differences are treated and a possible application of the effect to the construction of the device, complementary to SQUIDs, is analysed.
Źródło:: Acta Physica Polonica A; 2005, 108, 5; 817-824
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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