Beyond anderson localization in 1D: Anomalous localization of microwaves in random waveguides

Fernández-Marín, A. A. ; Méndez-Bermúdez, J. A. ; Carbonell, J. ; Cervera, F. ; Sánchez-Dehesa, J. ; Gopar, V. A. (Universidad de Zaragoza)

Resumen: Experimental evidence demonstrating that anomalous localization of waves can be induced in a controllable manner is reported. A microwave waveguide with dielectric slabs randomly placed is used to confirm the presence of anomalous localization. If the random spacing between slabs follows a distribution with a power-law tail (Lévy-type distribution), unconventional properties in the microwave-transmission fluctuations take place revealing the presence of anomalous localization. We study both theoretically and experimentally the complete distribution of the transmission through random waveguides characterized by a=1/2 ("Lévy waveguides") and a=3/4, a being the exponent of the power-law tail of the Lévy-type distribution. As we show, the transmission distributions are determined by only two parameters, both of them experimentally accessible. Effects of anomalous localization on the transmission are compared with those from the standard Anderson localization.

Idioma: Inglés

DOI: 10.1103/PhysRevLett.113.233901

Año: 2014

Publicado en: PHYSICAL REVIEW LETTERS 113, 23 (2014), 233901 [5 pp]
ISSN: 0031-9007

Factor impacto JCR: 7.512 (2014)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 6 / 78 = 0.077 (2014) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/MINECO/Consolider-Ingenio//CSD2008-00066
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2012-35719-C02-02
Financiación: info:eu-repo/grantAgreement/ES/MINECO/TEC2010-19751

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Física Teórica (Departamento de Física Teórica)