C

C. TARANTINI

Last name: C. TARANTINI

2006 (v1)

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Observation of the Crossover from Two-Gap to Single-Gap Superconductivity through Specific Heat Measurements in Neutron-Irradiated MgB2

PUTTI, MARINA MANFRINETTI, PIETRO M. AFFRONTE

We report specific heat measurements on neutron-irradiated MgB2 samples, for which the critical temperature is lowered to 8.7 K, but the superconducting transition remains extremely sharp, indicative of a defect structure extremely homogeneous. Our results evidence the presence of two superconducting gaps in the temperature range above 21 K,...

Uploaded on: March 25, 2023
2003 (v1)

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Effect of two bands on critical fields in MgB2 thin films with various resistivity values

V. FERRANDO P. MANFRINETTI D. MARRÈ

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Uploaded on: March 25, 2023
2005 (v1)

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Critical field of Al-doped MgB2 samples: Correlation with the suppression of the s-band gap

PUTTI, MARINA MANFRINETTI, PIETRO PALENZONA, ANDREA

In this paper, a study of the effect of Al substitution on the upper critical field, Bc2, in AlxMg1−xB2 samples is presented. We find a straightforward correlation between Bc2 and the σ-band gap, Δσ, evaluated by pointcontact measurements. Up to x=0.2, Bc2 can be well described within a clean limit model and its decrease with x is directly...

Uploaded on: April 14, 2023