Stripe Conductivity inLa1.775Sr0.225NiO4

Autor:	M. Fischer, V. V. Tsapenko, Leonardo Degiorgi, Yu. G. Pashkevich, Vladimir M. Gnezdilov, Douglas J. Buttrey, Gernot Güntherodt, John M. Tranquada, M. Grove, V. A. Blinkin, V. V. Eremenko, P. Wachter, Peter Lemmens
Rok vydání:	2000
Předmět:	Physics Condensed matter physics Phonon General Physics and Astronomy Order (ring theory) Charge (physics) Conductivity Optical conductivity symbols.namesake Condensed Matter::Superconductivity symbols Condensed Matter::Strongly Correlated Electrons Wave vector Raman spectroscopy Single crystal
Zdroj:	Physical Review Letters. 84:3919-3922
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.84.3919
Popis:	We report Raman light-scattering and optical conductivity measurements on a single crystal of ${\mathrm{La}}_{1.775}{\mathrm{Sr}}_{0.225}{\mathrm{NiO}}_{4}$ which exhibits incommensurate charge-stripe order. The extra phonon peaks induced by stripe order can be understood in terms of the energies of phonons that occur at the charge-order wave vector ${Q}_{c}$. A strong Fano antiresonance for a Ni-O bond-stretching mode provides clear evidence for finite dynamical conductivity within the charge stripes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b5df6dfc6bd742ecc30aae1260140199 https://doi.org/10.1103/physrevlett.84.3919 Zobrazit plný text záznamu