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Optical spectra measured on cleaved surfaces of double-exchange ferromagnet La1-xSrxMnO3 | K. Takenaka
; K. Iida
; Y. Sawaki
; S. Sugai
; Y. Moritomo
; A. Nakamura
; | Date: |
21 May 1999 | Journal: | Phys. Stat. Sol. (b) 215 (1999) 637 | Subject: | Strongly Correlated Electrons; Materials Science | cond-mat.str-el cond-mat.mtrl-sci | Abstract: | Optical reflectivity spectra were measured on cleaved surfaces of La1-xSrxMnO3 single crystals (x=0.175, T_C=283 K) over a temperature range 10-295 K. The optical conductivity $sigma(omega)$ shows, keeping single-component nature, incoherent-to-coherent crossover with increase of electrical conductivity. The $sigma(omega)$ spectrum of low-temperature ferromagnetic-metallic phase (10 K) exhibits a pronounced Drude-like component with large spectral weight, contrary to the previous result. The present result indicates that the optical spectrum of the manganites is sensitive to condition of sample surfaces. | Source: | arXiv, cond-mat/9905310 | Services: | Forum | Review | PDF | Favorites |
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