Oxygen Isotope Effect in the High Temperature Superconductors YBa<Subscript>2</Subscript>Cu<Subscript>3</Subscript>O<Subscript>7−δ</Subscript> and La<Subscript>1.85</Subscript>Sr<Subscript>0.15</Subscript>CuO<Subscript>4</Subscript>, with <Superscript>18</Superscript>O Substituted by Diffusion: Fid-Bau Portal

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Oxygen Isotope Effect in the High Temperature Superconductors YBa2Cu3O7−δ and La1.85Sr0.15CuO4, with 18O Substituted by Diffusion

Cohen, Marvin L. / Morris, D. E. / Stacy, A. / Zettl, A.

Abstract One of the most suggestive tests for electron-phonon coupling in conventional superconductors is the isotope effect, where Tc is sensitive to ionic mass: Tc ∝ M−α. The presence of an isotope shift would demonstrate an important role played by the phonons in the superconductivity mechanism. The high-Tc superconducting oxide La1.85Sr0.15CuO4 and YBa2Cu3O7−δ have many structural1 and electronic2 features in common. An important feature common to both the layered perovskite K2NiF4 structure of La2−xMxCuO4 (M = Ba, Sr, or Ca) and the distorted oxygen-defect pervoskite structure of RBa2Cu3O7−δ (R = Y or some lanthanide rare-earth elements) is the existence of two-dimensional copper-oxygen planes which are most responsible for the metallic conduction.

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Oxygen Isotope Effect in the High Temperature Superconductors YBa2Cu3O7−δ and La1.85Sr0.15CuO4, with 18O Substituted by Diffusion

Cohen, Marvin L. / Morris, D. E. / Stacy, A. / Zettl, A.

Abstract One of the most suggestive tests for electron-phonon coupling in conventional superconductors is the isotope effect, where Tc is sensitive to ionic mass: Tc ∝ M−α. The presence of an isotope shift would demonstrate an important role played by the phonons in the superconductivity mechanism. The high-Tc superconducting oxide La1.85Sr0.15CuO4 and YBa2Cu3O7−δ have many structural1 and electronic2 features in common. An important feature common to both the layered perovskite K2NiF4 structure of La2−xMxCuO4 (M = Ba, Sr, or Ca) and the distorted oxygen-defect pervoskite structure of RBa2Cu3O7−δ (R = Y or some lanthanide rare-earth elements) is the existence of two-dimensional copper-oxygen planes which are most responsible for the metallic conduction.

Oxygen Isotope Effect in the High Temperature Superconductors YBa2Cu3O7−δ and La1.85Sr0.15CuO4, with 18O Substituted by Diffusion

Cohen, Marvin L. / Morris, D. E. / Stacy, A. / Zettl, A.

Abstract One of the most suggestive tests for electron-phonon coupling in conventional superconductors is the isotope effect, where Tc is sensitive to ionic mass: Tc ∝ M−α. The presence of an isotope shift would demonstrate an important role played by the phonons in the superconductivity mechanism. The high-Tc superconducting oxide La1.85Sr0.15CuO4 and YBa2Cu3O7−δ have many structural1 and electronic2 features in common. An important feature common to both the layered perovskite K2NiF4 structure of La2−xMxCuO4 (M = Ba, Sr, or Ca) and the distorted oxygen-defect pervoskite structure of RBa2Cu3O7−δ (R = Y or some lanthanide rare-earth elements) is the existence of two-dimensional copper-oxygen planes which are most responsible for the metallic conduction.

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Title:

Oxygen Isotope Effect in the High Temperature Superconductors YBa2Cu3O7−δ and La1.85Sr0.15CuO4, with 18O Substituted by Diffusion

Contributors:

Cohen, Marvin L. (author) / Morris, D. E. (author) / Stacy, A. (author) / Zettl, A. (author)

Published in:

Novel Superconductivity ; 733-738

Publication date:

1987-01-01

Size:

6 pages

ISBN:

978-1-4612-9076-6 , 978-1-4613-1937-5

DOI:

https://doi.org/10.1007/978-1-4613-1937-5_83

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Oxygen Isotope , Isotope Effect , Isotope Shift , Isotope Substitution , Lawrence Berkeley Laboratory Physics , Strongly Correlated Systems, Superconductivity , Characterization and Evaluation of Materials

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