Wszystkie pola: disordered systems - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Quantum Kinetic Theory of the '$2k_{F}$' Scattering Mechanism for Three-Dimensional Structurally Disordered Systems in the Ioffe-Regel limit
Autorzy:: Spisak, B.
Wołoszyn, M.
Powiązania:: https://bibliotekanauki.pl/articles/1402579.pdf
Data publikacji:: 2015-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.55.Jv
72.15.Lh
72.15.Rn
Opis:: Effect of the coherent backscattering of the conduction electrons in three-dimensional structurally disordered metals specified by the Ioffe-Regel criterion is considered within the framework of the Morgan-Howson-Šaub theory of localisation which is based on the generalised kinetic equation for the Wigner distribution function and effective medium approximation. A formula for the electrical resistivity including the weak localisation correction is expressed in terms of the dimensionless transport parameter $k_{F}l$. The asymptotic form of the formula is derived and discussed in the context of the diagrammatic approach.
Źródło:: Acta Physica Polonica A; 2015, 128, 2; 213-215
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Phase Space Description of Localization in Disordered One-Dimensional Systems
Autorzy:: Wołoszyn, M.
Spisak, B. J.
Maksymowicz, A. Z.
Powiązania:: https://bibliotekanauki.pl/articles/2047103.pdf
Data publikacji:: 2006-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.21.Hb
73.20.Fz
71.23.An
Opis:: The degree of electronic localization in disordered one-dimensional systems is discussed. The model is simplified to a set of Diracδ-like functions used for the potential in the Schrödinger equation and calculations are carried out for the ground state. The disorder of topological character is introduced by the random shifts of the potential peaks. For comparison, we also discuss two aperiodic systems of the potential peaks: Thue-Morse and Fibonacci sequences. The localization, both in the momentum and the real space, is analyzed for different disorder strengths and sizes of the system. We calculate the localization length, and additionally we express the localization effects in terms of the inverse participation function and also by means of the Husimi quasi-classical distribution function in the phase space of the electron (position, momentum) coordinate system. We present the influence of disorder generated by the random and aperiodic sequences of potential on the energy spectrum.
Źródło:: Acta Physica Polonica A; 2006, 110, 4; 523-535
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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