2026-06-28T10:32:19Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/594002023-08-26T06:50:08Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Domínguez-Adame Acosta, Francisco
author
Maciá Barber, Enrique Alfonso
author
Sánchez, Angel
2023-06-20T19:12:55Z
2023-06-20T19:12:55Z
1993-09-01
0163-1829
10.1103/PhysRevB.48.6054
https://hdl.handle.net/20.500.14352/59400
http://dx.doi.org/10.1103/PhysRevB.48.6054
http://journals.aps.org
Normal modes of one-dimensional disordered chains with two couplings, one of them assigned at random to pairs in an otherwise perfect chain, are investigated. We diagonalize the dynamical matrix to find the normal modes and to study their spatial extent. Multifractal analysis is used to discern clearly the localized or delocalized character of vibrations. In constrast to the general viewpoint that all normal modes in one dimensional random chains are localized, we find a set of extended modes close to a critical frequency, whose number increases with the system size and becomes independent of the defect concentration.
eng
Delocalized vibrations in classical random chains
journal article
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https://docta.ucm.es/bitstreams/9d5f7834-607f-4b75-8097-670a318a3015/download
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Dguez-Adame168libre.pdf
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Dguez-Adame168libre.pdf.txt