Universal Correlations between Tc and nsm* (Carrier Density over Effective Mass) in High-Tc Cuprate Superconductors

Y. J. Uemura; G. M. Luke; B. J. Sternlieb; J. H. Brewer; J. F. Carolan; W. N. Hardy; R. Kadono; J. R. Kempton; R. F. Kiefl; S. R. Kreitzman; P. Mulhern; T. M. Riseman; D. Ll. Williams; B. X. Yang; S. Uchida; H. Takagi; J. Gopalakrishnan; A. W. Sleight; M. A. Subramanian; C. L. Chien; M. Z. Cieplak; Gang Xiao; V. Y. Lee; B. W. Statt; C. E. Stronach; W. J. Kossler; X. H. Yu

doi:10.1103/PhysRevLett.62.2317

Universal Correlations between Tc and nsm* (Carrier Density over Effective Mass) in High-Tc Cuprate Superconductors

Y. J. Uemura, G. M. Luke, B. J. Sternlieb, J. H. Brewer, J. F. Carolan, W. N. Hardy, R. Kadono, J. R. Kempton, R. F. Kiefl, S. R. Kreitzman, P. Mulhern, T. M. Riseman, D. Ll. Williams, B. X. Yang, S. Uchida, H. Takagi, J. Gopalakrishnan, A. W. Sleight, M. A. Subramanian, C. L. Chien, M. Z. Cieplak, Gang Xiao, V. Y. Lee, B. W. Statt, C. E. Stronach, W. J. Kossler, X. H. Yu

DOI 10.1103/PhysRevLett.62.2317 · Physical Review Letters

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Abstract

The muon-spin-relaxation rate σ has been measured in sixteen specimens of high-Tc cuprate superconductors (the 2:1:4, 1:2:3, 2:2:1:2, and 2:2:2:3 series). This has allowed us to study the magnetic field penetration depth λ and thus the superconducting carrier density ns divided by the effective mass m*(σ∝1λ2∝nsm*). A universal linear relation between Tc and σ(T→0)∝nsm* has been found with increasing carrier doping. In heavily doped samples, however, Tc shows saturation and suppression with increasing nsm*. This saturation starts at different values of nsm* for materials with different multiplicities of CuO planes.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
(La2-xSrx)CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	38	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	90	Pressure not reported	unknown
Tl2Ba2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	125	Pressure not reported	unknown
(Tl0.5Pb0.5)Sr2CaCu2O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	75	Pressure not reported	onset
(Tl0.5Pb0.5)Sr2Ca2Cu3O9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	110	Pressure not reported	onset
La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	30	Pressure not reported	onset
(Y0.7Ca0.3)Ba2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	80	Pressure not reported	onset
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	75	Pressure not reported	onset
Bi2-xPbxSr2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	110	Pressure not reported	onset
Tl2Ba2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	125	Pressure not reported	onset