Optical properties of Ca0.5Sr0.5RuO3 and La0.5Sr0.5CoO3: Metallic oxides which look like cuprate superconductors

Ivan Bozovic; J. H. Kim; J. S. Harris; C. B. Eom; Julia M. Phillips; J. T. Cheung

doi:10.1016/0921-4534(94)91799-X

Optical properties of Ca_0.5Sr_0.5RuO₃ and La_0.5Sr_0.5CoO₃: Metallic oxides which look like cuprate superconductors

Ivan Bozovic, J. H. Kim, J. S. Harris, C. B. Eom, Julia M. Phillips, J. T. Cheung

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Isotropic oxides Ca_0.5Sr_0.5RuO₃ and La_0.5Sr_0.5CoO₃ are metallic; ρ(T) is roughly linear and it reaches few hundred μωcm at room temperature. We have synthesized optical-quality thin films of these two materials and studied their reflectance, ellipsometric, and Raman spectra over a broad spectral range. Great resemblance is observed to the corresponding spectra of cuprate superconductors; in particular, reflectance decreases with frequency in a nearly linear fashion throughout the infrared, and the electronic Raman scattering continuum is nearly independent of energy. The 'anomalous' dielectric response described above is considered to be the route cause of high-T_c superconductivity in some theoretical models; however, neither of the two metals under study is superconducting at least down to 4.2 K.

Original language	English
Pages (from-to)	1149-1150
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	235-240
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(94)91799-X
Publication status	Published - 1994 Dec

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(94)91799-X

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title = "Optical properties of Ca0.5Sr0.5RuO3 and La0.5Sr0.5CoO3: Metallic oxides which look like cuprate superconductors",

abstract = "Isotropic oxides Ca0.5Sr0.5RuO3 and La0.5Sr0.5CoO3 are metallic; ρ(T) is roughly linear and it reaches few hundred μωcm at room temperature. We have synthesized optical-quality thin films of these two materials and studied their reflectance, ellipsometric, and Raman spectra over a broad spectral range. Great resemblance is observed to the corresponding spectra of cuprate superconductors; in particular, reflectance decreases with frequency in a nearly linear fashion throughout the infrared, and the electronic Raman scattering continuum is nearly independent of energy. The 'anomalous' dielectric response described above is considered to be the route cause of high-Tc superconductivity in some theoretical models; however, neither of the two metals under study is superconducting at least down to 4.2 K.",

author = "Ivan Bozovic and Kim, {J. H.} and Harris, {J. S.} and Eom, {C. B.} and Phillips, {Julia M.} and Cheung, {J. T.}",

year = "1994",

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doi = "10.1016/0921-4534(94)91799-X",

language = "English",

volume = "235-240",

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journal = "Physica C: Superconductivity and its Applications",

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T1 - Optical properties of Ca0.5Sr0.5RuO3 and La0.5Sr0.5CoO3

T2 - Metallic oxides which look like cuprate superconductors

AU - Bozovic, Ivan

AU - Kim, J. H.

AU - Harris, J. S.

AU - Eom, C. B.

AU - Phillips, Julia M.

AU - Cheung, J. T.

PY - 1994/12

Y1 - 1994/12

N2 - Isotropic oxides Ca0.5Sr0.5RuO3 and La0.5Sr0.5CoO3 are metallic; ρ(T) is roughly linear and it reaches few hundred μωcm at room temperature. We have synthesized optical-quality thin films of these two materials and studied their reflectance, ellipsometric, and Raman spectra over a broad spectral range. Great resemblance is observed to the corresponding spectra of cuprate superconductors; in particular, reflectance decreases with frequency in a nearly linear fashion throughout the infrared, and the electronic Raman scattering continuum is nearly independent of energy. The 'anomalous' dielectric response described above is considered to be the route cause of high-Tc superconductivity in some theoretical models; however, neither of the two metals under study is superconducting at least down to 4.2 K.

AB - Isotropic oxides Ca0.5Sr0.5RuO3 and La0.5Sr0.5CoO3 are metallic; ρ(T) is roughly linear and it reaches few hundred μωcm at room temperature. We have synthesized optical-quality thin films of these two materials and studied their reflectance, ellipsometric, and Raman spectra over a broad spectral range. Great resemblance is observed to the corresponding spectra of cuprate superconductors; in particular, reflectance decreases with frequency in a nearly linear fashion throughout the infrared, and the electronic Raman scattering continuum is nearly independent of energy. The 'anomalous' dielectric response described above is considered to be the route cause of high-Tc superconductivity in some theoretical models; however, neither of the two metals under study is superconducting at least down to 4.2 K.

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Optical properties of Ca_0.5Sr_0.5RuO₃ and La_0.5Sr_0.5CoO₃: Metallic oxides which look like cuprate superconductors

Abstract

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