Sliding density wave in Sr14Cu24O41 ladder compounds.
We used transport and Raman scattering measurements to identify the insulating state of self-doped spin (1/2) two-leg ladders of Sr14Cu24O41 as a weakly pinned, sliding density wave with nonlinear conductivity and a giant dielectric response that persists to remarkably high temperatures.
Blumberg
G
G
Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974, USA. girsh@bell-labs.com
Littlewood
P
P
Gozar
A
A
Dennis
B S
BS
Motoyama
N
N
Eisaki
H
H
Uchida
S
S