2001
DOI: 10.1016/s0921-4534(01)00617-7
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Specific heat in the superconducting and normal state (2–300 K, 0–16 T), and magnetic susceptibility of the 38 K superconductor MgB2: evidence for a multicomponent gap

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Cited by 379 publications
(353 citation statements)
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“…The dc magnetization data shows a small ferromagnetic component that is temperature-independent for temperatures less than 300 K. This is likely to be due to the Fe impurity clusters in this sample. Similar observations were reported by other researchers [21,28,44]. We estimate the Fe clusters fraction to be no more that 0.02 % of the total sample mass from the saturation magnetization of the ferromagnetic impurity.…”
Section: Methodssupporting
confidence: 91%
“…The dc magnetization data shows a small ferromagnetic component that is temperature-independent for temperatures less than 300 K. This is likely to be due to the Fe impurity clusters in this sample. Similar observations were reported by other researchers [21,28,44]. We estimate the Fe clusters fraction to be no more that 0.02 % of the total sample mass from the saturation magnetization of the ferromagnetic impurity.…”
Section: Methodssupporting
confidence: 91%
“…λ also has not changed significantly with irradiation. Our value of λ is higher than 0.61-0.63 obtained from specific heat data [20,22], but close to that obtained from theoretical band structure calculations by Y. Kong et al [17].…”
Section: Resistivity Analysissupporting
confidence: 88%
“…The phenomenological two-gap model fit of the data of Ref. [5] gives results [4] that are similar to ours, while the data of Ref. [6] has a lowtemperature exponential behavior that is very similar to that shown in Fig.…”
supporting
confidence: 80%