Optical probing of the metal-to-insulator transition in a two-dimensional high-mobility electron gas (Articolo in rivista)

Type
Label
  • Optical probing of the metal-to-insulator transition in a two-dimensional high-mobility electron gas (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Dionigi F, F Rossella, V Bellani, M Amado, E Diez, K Kowalik, G Biasiol and L Sorba (2011)
    Optical probing of the metal-to-insulator transition in a two-dimensional high-mobility electron gas
    in New journal of physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Dionigi F, F Rossella, V Bellani, M Amado, E Diez, K Kowalik, G Biasiol and L Sorba (literal)
Pagina inizio
  • 063003 (literal)
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  • 13 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • F Dionigi 1,7, F Rossella 1, V Bellani 1,8, M Amado 2,3, E Diez 3, K Kowalik 4,9, G Biasiol 5 and L Sorba 6 1 Dipartimento di Fisica ‘A Volta’ and CNISM, Università degli Studi di Pavia, 27100 Pavia, Italy 2 GISC and Departamento de Física de Materiales, Universidad Complutense, 28040 Madrid, Spain 3 Laboratorio de Bajas Temperaturas, Universidad de Salamanca, 37008 Salamanca, Spain 4 Laboratoire National des Champs Magnétiques Intenses, CNRS, 38042 Grenoble, France 5 Istituto Officina dei Materiali CNR, Laboratorio TASC, 34149 Trieste, Italy 6 NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, 56126 Pisa, Italy (literal)
Titolo
  • Optical probing of the metal-to-insulator transition in a two-dimensional high-mobility electron gas (literal)
Abstract
  • We study the quantum Hall liquid and the metal–insulator transition in a high-mobility two-dimensional electron gas, by means of photoluminescence and magnetotransport measurements. In the integer and fractional regime at ½ > 1/3, by analyzing the emission energy dispersion we probe the magneto-Coulomb screening and the hidden symmetry of the electron liquid. In the fractional regime above ½ = 1/3, the system undergoes metal-toinsulator transition, and in the insulating phase the dispersion becomes linear with evidence of an increased renormalized mass. (literal)
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