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Exotic Charge-Density Wave in Ladder Planes of Sr14Cu24O41 (CROSBI ID 518237)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Ivek, Tomislav ; Vuletić, Tomislav ; Tomić, Silvia ; Korin-Hamzić, Bojana ; Dresse, Martin ; Gorshunov, Boris ; Akimitsu, J. Exotic Charge-Density Wave in Ladder Planes of Sr14Cu24O41 // Recent Developments in Low Dimensional Charge Density Wave Conductors / Dumas, Jean ; Biljaković, Katica (ur.). Zagreb: Institut za fiziku, 2006

Podaci o odgovornosti

Ivek, Tomislav ; Vuletić, Tomislav ; Tomić, Silvia ; Korin-Hamzić, Bojana ; Dresse, Martin ; Gorshunov, Boris ; Akimitsu, J.

engleski

Exotic Charge-Density Wave in Ladder Planes of Sr14Cu24O41

The quantum spin-chain and ladder material Sr14Cu24O41 presents an interesting opportunity to study collective charge dynamics in the charge ordered state inside a spin-gapped en¬ vi¬ ron¬ ment (for a most recent review see [1]). We have characterized the charge response of sin¬ gle crystals along the crystallographic directions parallel to ladder legs and rungs by means of dc resistivity and low frequency dielectric spectroscopy. The ground state in the ladder planes can be identified as a charge density wave insulator, but of a non-standard nature. Resonant X ray scattering [2] shows that the charge order develops in the ladder planes with a 2D long-range order. Our results demonstrate that the CDW sets in below an insulator-to-in¬ su¬ la¬ tor phase transition and possesses an anisotropic phason-like dispersion [1, 3]. In varying dc fields only negligible nonlinear effects emerging from the background noise were observed, at va¬ ri¬ an¬ ce with strong nonlinearities [4] above a finite threshold field reported by other authors [4, 5].

spin ladders; charge density wave; anisotropic phason response

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Podaci o prilogu

2006.

objavljeno

Podaci o matičnoj publikaciji

Recent Developments in Low Dimensional Charge Density Wave Conductors

Dumas, Jean ; Biljaković, Katica

Zagreb: Institut za fiziku

Podaci o skupu

Workshop on Recent Developments in Low Dimensional Charge Density Wave Conductors

predavanje

29.06.2006-03.07.2006

Skradin, Hrvatska

Povezanost rada

Fizika