Local charge-density change and superconductivity: A positron study

Y. C. Jean; C. S. Sundar; A. Bharathi; J. Kyle; H. Nakanishi; P. K. Tseng; P. H. Hor; R. L. Meng; Z. J. Huang; C. W. Chu; Z. Z. Wang; P. E.A. Turchi; R. H. Howell; A. L. Wachs; M. J. Fluss

doi:10.1103/PhysRevLett.64.1593

Local charge-density change and superconductivity: A positron study

Y. C. Jean, C. S. Sundar, A. Bharathi, J. Kyle, H. Nakanishi, P. K. Tseng, P. H. Hor, R. L. Meng, Z. J. Huang, C. W. Chu, Z. Z. Wang, P. E.A. Turchi, R. H. Howell, A. L. Wachs, M. J. Fluss

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Abstract

The temperature dependence between 10 and 300 K of the positron lifetime was measured in the high-temperature superconductors YBA2(Cu1-xMx)3O6+where M=Zn and Ga with x=0.0 to 0.07 and >0.8. In the undoped and Ga-doped samples, the positron lifetime in the Bloch state, was observed to decrease below Tc. In the Zn-doped samples, a dramatic x-dependent temperature variation of was observed: from a decrease of Tb below Tc for x=0.01 to an increase of for x>0.02. These new experimental results are interpreted in terms of a change in the local charge density of high-Tc oxides associated with the superconducting transition.

Original language	English
Pages (from-to)	1593-1596
Number of pages	4
Journal	Physical review letters
Volume	64
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.64.1593
Publication status	Published - 1990

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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Jean, Y. C., Sundar, C. S., Bharathi, A., Kyle, J., Nakanishi, H., Tseng, P. K., Hor, P. H., Meng, R. L., Huang, Z. J., Chu, C. W., Wang, Z. Z., Turchi, P. E. A., Howell, R. H., Wachs, A. L., & Fluss, M. J. (1990). Local charge-density change and superconductivity: A positron study. Physical review letters, 64(13), 1593-1596. https://doi.org/10.1103/PhysRevLett.64.1593

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title = "Local charge-density change and superconductivity: A positron study",

abstract = "The temperature dependence between 10 and 300 K of the positron lifetime was measured in the high-temperature superconductors YBA2(Cu1-xMx)3O6+where M=Zn and Ga with x=0.0 to 0.07 and >0.8. In the undoped and Ga-doped samples, the positron lifetime in the Bloch state, was observed to decrease below Tc. In the Zn-doped samples, a dramatic x-dependent temperature variation of was observed: from a decrease of Tb below Tc for x=0.01 to an increase of for x>0.02. These new experimental results are interpreted in terms of a change in the local charge density of high-Tc oxides associated with the superconducting transition.",

author = "Jean, {Y. C.} and Sundar, {C. S.} and A. Bharathi and J. Kyle and H. Nakanishi and Tseng, {P. K.} and Hor, {P. H.} and Meng, {R. L.} and Huang, {Z. J.} and Chu, {C. W.} and Wang, {Z. Z.} and Turchi, {P. E.A.} and Howell, {R. H.} and Wachs, {A. L.} and Fluss, {M. J.}",

year = "1990",

doi = "10.1103/PhysRevLett.64.1593",

language = "English",

volume = "64",

pages = "1593--1596",

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T1 - Local charge-density change and superconductivity

T2 - A positron study

AU - Jean, Y. C.

AU - Sundar, C. S.

AU - Bharathi, A.

AU - Kyle, J.

AU - Nakanishi, H.

AU - Tseng, P. K.

AU - Hor, P. H.

AU - Meng, R. L.

AU - Huang, Z. J.

AU - Chu, C. W.

AU - Wang, Z. Z.

AU - Turchi, P. E.A.

AU - Howell, R. H.

AU - Wachs, A. L.

AU - Fluss, M. J.

PY - 1990

Y1 - 1990

N2 - The temperature dependence between 10 and 300 K of the positron lifetime was measured in the high-temperature superconductors YBA2(Cu1-xMx)3O6+where M=Zn and Ga with x=0.0 to 0.07 and >0.8. In the undoped and Ga-doped samples, the positron lifetime in the Bloch state, was observed to decrease below Tc. In the Zn-doped samples, a dramatic x-dependent temperature variation of was observed: from a decrease of Tb below Tc for x=0.01 to an increase of for x>0.02. These new experimental results are interpreted in terms of a change in the local charge density of high-Tc oxides associated with the superconducting transition.

AB - The temperature dependence between 10 and 300 K of the positron lifetime was measured in the high-temperature superconductors YBA2(Cu1-xMx)3O6+where M=Zn and Ga with x=0.0 to 0.07 and >0.8. In the undoped and Ga-doped samples, the positron lifetime in the Bloch state, was observed to decrease below Tc. In the Zn-doped samples, a dramatic x-dependent temperature variation of was observed: from a decrease of Tb below Tc for x=0.01 to an increase of for x>0.02. These new experimental results are interpreted in terms of a change in the local charge density of high-Tc oxides associated with the superconducting transition.

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EP - 1596

JO - Physical review letters

JF - Physical review letters

IS - 13

ER -

Local charge-density change and superconductivity: A positron study

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