1977
DOI: 10.1143/jpsj.43.415
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Numerical Study of Electron Localization in Anderson Model for Disordered Systems: Spatial Extension of Wavefunction

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Cited by 127 publications
(14 citation statements)
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“…It should be noted that a scaling analysis of the inverse participation ratio 19 is included as a special case of our analysis. The inverse participation ratio defined by P Ϫ1 ϭ ͚ i ͉ i ͉ 4 is coincident with Z q for qϭ2 and lϭa, where a is a lattice constant.…”
Section: ͑4͒mentioning
confidence: 99%
“…It should be noted that a scaling analysis of the inverse participation ratio 19 is included as a special case of our analysis. The inverse participation ratio defined by P Ϫ1 ϭ ͚ i ͉ i ͉ 4 is coincident with Z q for qϭ2 and lϭa, where a is a lattice constant.…”
Section: ͑4͒mentioning
confidence: 99%
“…A first observation is that for a fixed energy 249 E, the localization length can easily change by a factor of two, probably because of big differences in the local environment. Such large fluctuations have been found in exact diagonalizations [29] too, although for this particular value of the disorder W= 5 V, the system used in the diagonalization work was too small to support states with a large localization length. Taking these statistical fluctuations into account there is a clear trend that the localization length reaches its maximum at E = 0, in disagreement with Ref.…”
Section: Localization Lengthmentioning
confidence: 65%
“…Evidently these kinds of analyses can also be applied to the eigenstates obtained from the procedure outlined above. Another, frequently used, quantity that signals the transition from extended to localized motion is the inverse participation ratio (IPR) [25,26,29,42,45]. Our calculations show that as a function of time, the noise on this quantity is larger than on the moments.…”
Section: ~mentioning
confidence: 86%
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“…Величина АЕ определялась в работах 25~29 численно через величину сдвига уровней при переходе от периодических к антипериодическим граничным условиям для волновых функций на границе ячейки L. Хотя полученная таким продолжением решетка и не тождественна масштабно-преобразованной решетке Андерсона, можно при качественном рассмотрении считать, что эффективная связь **) электронов на двух уровнях в соседних ячейках в решетке Андерсона (т. е. аналог интеграла перекрытия V для системы, состоящей из новых ячеек) порядка 29 к гипотезе о том, что в двумерных системах может осуществляться полная локализация при сколь угодно малом беспорядке (аналогично одномерному случаю). В то же время результаты работы 31 подтверждают основные выводы работы 27 . Результаты, получающиеся при численном обсчете трехмерных систем, слишком неопределенны 26~29 ; наиболее полное рас-смотрение трехмерного случая проводилось в работе 32 (для решетки типа алмаза).…”
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