Unusual hole dependence of Tc in HgBa2CuO4+δ

Q. Xiong; Y. Y. Xue; Y. Cao; F. Chen; Y. Y. Sun; J. Gibson; C. W. Chu; L. M. Liu; A. Jacobson

doi:10.1103/PhysRevB.50.10346

Unusual hole dependence of Tc in HgBa2CuO4+δ

Q. Xiong, Y. Y. Xue, Y. Cao, F. Chen, Y. Y. Sun, J. Gibson, C. W. Chu, L. M. Liu, A. Jacobson

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Abstract

The anion doping effect on the superconducting transition temperature (Tc) of HgBa2CuO4+δ has been determined with a wide Tc variation. We found a parabolic variation of Tc with δ over the entire range of superconductivity. Remarkably, the dependence of Tc on p (the number of holes per CuO2) has richer features: for δ≤0.28, Tc is parabolic in p, but with an unusual prefactor and p=0.72δ, giving significantly less than two holes per oxygen; and for δ>0.28, a drastic departure from the parabolic Tc(p) occurs. Implications for the occurrence of superconductivity in this material are discussed.

Original language	English
Pages (from-to)	10346-10349
Number of pages	4
Journal	Physical Review B
Volume	50
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.50.10346
Publication status	Published - 1994

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1103/PhysRevB.50.10346

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title = "Unusual hole dependence of Tc in HgBa2CuO4+δ",

abstract = "The anion doping effect on the superconducting transition temperature (Tc) of HgBa2CuO4+δ has been determined with a wide Tc variation. We found a parabolic variation of Tc with δ over the entire range of superconductivity. Remarkably, the dependence of Tc on p (the number of holes per CuO2) has richer features: for δ≤0.28, Tc is parabolic in p, but with an unusual prefactor and p=0.72δ, giving significantly less than two holes per oxygen; and for δ>0.28, a drastic departure from the parabolic Tc(p) occurs. Implications for the occurrence of superconductivity in this material are discussed.",

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T1 - Unusual hole dependence of Tc in HgBa2CuO4+δ

AU - Xiong, Q.

AU - Xue, Y. Y.

AU - Cao, Y.

AU - Chen, F.

AU - Sun, Y. Y.

AU - Gibson, J.

AU - Chu, C. W.

AU - Liu, L. M.

AU - Jacobson, A.

PY - 1994

Y1 - 1994

N2 - The anion doping effect on the superconducting transition temperature (Tc) of HgBa2CuO4+δ has been determined with a wide Tc variation. We found a parabolic variation of Tc with δ over the entire range of superconductivity. Remarkably, the dependence of Tc on p (the number of holes per CuO2) has richer features: for δ≤0.28, Tc is parabolic in p, but with an unusual prefactor and p=0.72δ, giving significantly less than two holes per oxygen; and for δ>0.28, a drastic departure from the parabolic Tc(p) occurs. Implications for the occurrence of superconductivity in this material are discussed.

AB - The anion doping effect on the superconducting transition temperature (Tc) of HgBa2CuO4+δ has been determined with a wide Tc variation. We found a parabolic variation of Tc with δ over the entire range of superconductivity. Remarkably, the dependence of Tc on p (the number of holes per CuO2) has richer features: for δ≤0.28, Tc is parabolic in p, but with an unusual prefactor and p=0.72δ, giving significantly less than two holes per oxygen; and for δ>0.28, a drastic departure from the parabolic Tc(p) occurs. Implications for the occurrence of superconductivity in this material are discussed.

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Unusual hole dependence of Tc in HgBa2CuO4+δ

Abstract

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