We measure specific heat on neutron-irradiated MgB2 samples, whose critical temperature is reduced down to 8.7 K keeping the superconducting transition extremely sharp. The results clearly show the present of two superconducting gap in the range of temperature between 39 and 21 K, whereas a single gap behavior is observed when T-c is lower than 11 K.
Observation of the gap merging in neutron irradiated MgB2
MANFRINETTI, PIETRO;PUTTI, MARINA
2007-01-01
Abstract
We measure specific heat on neutron-irradiated MgB2 samples, whose critical temperature is reduced down to 8.7 K keeping the superconducting transition extremely sharp. The results clearly show the present of two superconducting gap in the range of temperature between 39 and 21 K, whereas a single gap behavior is observed when T-c is lower than 11 K.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
