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초록
We present optical reflectivity and Raman scattering studies of YBa2Cu3O6+x as a function of doping using c-axis polarized light. The c-axis optical response of YBa2Cu3O7 is characterized by a Drude-like conductivity and an electronic Raman continuum, indicating a weak coupling between adjacent CuO2 bilayers which is mediated by the CuO chains. With reduced doping, the c-axis Drude and continuum responses rapidly decrease, revealing a strong sensitivity of the inter-bilayer coupling strength to the removal of oxygen from the chain sites.
키워드
INFRARED REFLECTIVITY; RAMAN SCATTERING; C-AXIS CHARGE TRANSPORT; SINGLE-CRYSTAL; OXIDE SUPERCONDUCTORS; CUO2 PLANES; RESISTIVITY; ANISOTROPY; CONDUCTIVITY
- 제목
- Inter-bilayer charge dynamics in YBa2Cu3O6+x
- 저자
- COOPER, SL; NYHUS, P; REZNIK, D; KLEIN, MV; LEE, WC; GINSBERG, DM; VEAL, BW; PAULIKAS, AP
- 발행일
- 1993-10
- 권
- 54
- 호
- 10
- 페이지
- 1307 ~ 1314