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Localisation and transport in bidimensional random models with separable Hamiltonians

التفاصيل البيبلوغرافية
العنوان: Localisation and transport in bidimensional random models with separable Hamiltonians
المؤلفون: G Corona-Patricio, U Kuhl, F Mortessagne, P Vignolo, L Tessieri
المصدر: New Journal of Physics, Vol 21, Iss 7, p 073041 (2019)
بيانات النشر: IOP Publishing, 2019.
سنة النشر: 2019
المجموعة: LCC:Science
LCC:Physics
مصطلحات موضوعية: Anderson localization, wave propagation, bi-dimensional systems, electronic transmission, Science, Physics, QC1-999
الوصف: We consider two bidimensional random models characterised by the following features: (a) their Hamiltonians are separable in polar coordinates and (b) the random part of the potential depends either on the angular coordinate or on the radial one, but not on both. The disorder correspondingly localises the angular or the radial part of the eigenfunctions. We analyse the analogies and the differences which exist between the selected 2D models and their 1D counterparts. We show how the analogies allow one to use correlated disorder to design a localisation length with pre-defined energy dependence and to produce directional localisation of the wavefunctions in models with angular disorder. We also discuss the importance of finite-size and resonance effects in shaping the eigenfunctions of the model with angular disorder; for the model with disorder associated to the radial variable we show under what conditions the localisation length coincides with the expression valid in the 1D case.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1367-2630
العلاقة: https://doaj.org/toc/1367-2630Test
DOI: 10.1088/1367-2630/ab2fd9
الوصول الحر: https://doaj.org/article/9ac4e47f6ef04aa5b48f592641839b2aTest
رقم الانضمام: edsdoj.9ac4e47f6ef04aa5b48f592641839b2a
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:13672630
DOI:10.1088/1367-2630/ab2fd9