Lower Critical Field of U<sub>0.97</sub>Th<sub>0.03</sub>Be<sub>13</sub>: Evidence for Two Coexisting Superconducting Order Parameters
- Rauchschwalbe, U.
- Steglich, F.
- Stewart, G.
- Giorgi, A.
- Fulde, P.
- Maki, K.
Publication date
August 1987
DOIAbstract
Evidence is presented for the coexistence of two superconducting order parameters in U0.97Th0.03Be13 below Tcb = 0.26 K. Measurements of the lower critical magnetic field performed for the first time and published data on the specific heat prove that the lower transition in U0.97Th0.03Be13 is a superconducting transition below which a new order parameter adds to the one existing below Tca = 0.48 K. Our conclusion contrasts the picture where one order parameter is replaced by another one
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