Raman and infrared (IR) spectra of an underdoped La1.90Sr0.10CuO4 single crystal have been measured as a function of temperature. Both techniques provide unconventional low-energy spectra. The IR conductivity exhibits features peaked at finite frequencies which do not have a counterpart in the Raman response. Below approximately 100 K a transfer of both Raman and IR spectral weight towards lower energies is found and a new component in the Raman response builds up being characterized by a very long lifetime of electrons propagating along the Cu-O bonds.

Raman Scattering versus infrared conductivity: Evidence for one-dimensional conduction in LSCO / Venturini, F; ZHANG Q., M; Hackl, R; Lupi, Stefano; Ortolani, Michele; Calvani, Paolo. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 66:(2002), pp. 060502-1-060502-4. [10.1103/PhysRevB.66.060502]

Raman Scattering versus infrared conductivity: Evidence for one-dimensional conduction in LSCO

LUPI, Stefano;ORTOLANI, MICHELE;CALVANI, Paolo
2002

Abstract

Raman and infrared (IR) spectra of an underdoped La1.90Sr0.10CuO4 single crystal have been measured as a function of temperature. Both techniques provide unconventional low-energy spectra. The IR conductivity exhibits features peaked at finite frequencies which do not have a counterpart in the Raman response. Below approximately 100 K a transfer of both Raman and IR spectral weight towards lower energies is found and a new component in the Raman response builds up being characterized by a very long lifetime of electrons propagating along the Cu-O bonds.
2002
High Tc cuprates
01 Pubblicazione su rivista::01a Articolo in rivista
Raman Scattering versus infrared conductivity: Evidence for one-dimensional conduction in LSCO / Venturini, F; ZHANG Q., M; Hackl, R; Lupi, Stefano; Ortolani, Michele; Calvani, Paolo. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 66:(2002), pp. 060502-1-060502-4. [10.1103/PhysRevB.66.060502]
File allegati a questo prodotto
File Dimensione Formato  
Venturini_Raman scattering_2002.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 68.07 kB
Formato Adobe PDF
68.07 kB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/32335
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 62
social impact