Relaxation time of the order parameter in a high-temperature superconductor

G. L. Eesley; J. Heremans; M. S. Meyer; G. L. Doll; S. H. Liou

doi:10.1103/PhysRevLett.65.3445

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Relaxation time of the order parameter in a high-temperature superconductor

G. L. Eesley, J. Heremans, M. S. Meyer, G. L. Doll, S. H. Liou

DOI 10.1103/PhysRevLett.65.3445 · Physical Review Letters

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Abstract

We present femtosecond time-resolved measurements on the high-Tc superconductor Tl2Ba2Ca2Cu3O10. At temperatures below Tc, we observe a relaxation process which is distinct from the equilibration of hot carriers in the normal state. Our results demonstrate an increasing relaxation rate as the superconducting gap opens. This is consistent with the behavior of conventional metallic superconductors.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Tl2Ba2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	120	Pressure not reported	onset
Tl2Ba2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	106	Pressure not reported	zero_resistance
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2Ca2Cu3O10 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown