1.
Phys Rev Lett
; 87(22): 227002, 2001 Nov 26.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11736419
RESUMO
The far-infrared c-axis reflectance of Sr(2)RuO(4) has been measured above and below the 2.5 K superconducting transition temperature of the sample. A plasma edge develops near 70 cm(-1) as the temperature is lowered, which corresponds to a Drude peak in the real optical conductivity associated with the onset of the coherent motion of the carriers. A gaplike suppression of the frequency-dependent scattering rate at low temperatures indicates that the coherent transport is related to a loss of scattering below 60 cm(-1). A strong resonance near 9 meV is responsible for the scattering that destroys coherence.