Measurements of noise spectral densities for a high-Tc superconductor: Single-crystal Bi2Sr2CaCu2Ox

K. H. Han; M. K. Joo; Sung-Ho Suck Salk; H. J. Shin; Sung-Ik Lee

doi:10.1103/PhysRevB.46.11835

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Measurements of noise spectral densities for a high-Tc superconductor: Single-crystal Bi2Sr2CaCu2Ox

K. H. Han, M. K. Joo, Sung-Ho Suck Salk, H. J. Shin, Sung-Ik Lee

DOI 10.1103/PhysRevB.46.11835 · Physical Review B

T1

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Abstract

The noise power spectral density for a Bi2Sr2Ca1Cu2Ox single crystal has been examined as a function of magnetic field, temperature, and frequency. In the normal state, the normalized noise power spectral density Sn(f) was observed to be several orders of magnitude greater than that of normal metals. Near the superconducting transition temperature, we observed a marked increase in Sn(f) with and without an external magnetic field. Moreover, in this region, we observed an unusual frequency dependence of the noise power spectral density on the external magnetic field.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	85	Pressure not reported	onset
Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	78.8	Pressure not reported	zero_resistance
YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown