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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 interbilayer coupling strength to the removal of oxygen from the chain sites. We suggest that interbilayer charge transport in YBa2Cu3O6+x may be governed by carrier scattering from in-plane fluctuations.
키워드
ANISOTROPY; RESISTIVITY
- 제목
- INTERBILAYER CHARGE DYNAMICS IN YBA2CU3O6+X
- 저자
- S. L. Cooper; P. Nyhus; D. Reznik; M. V. Klein; W. C. Lee; D. M. Ginsberg; B. W. Veal; A. P. Paulikas; B. Dabrowski
- 발행일
- 1993-03
- 권
- 70
- 호
- 10
- 페이지
- 1533 ~ 1536