Heavy Fermion Behaviors of Amorphous Ce_9Cu_<91> Alloy in High Magnetic Fields(Transport and Fermiology)
Heavy fermion behaviors observed in the amorphous(a-) Ce_9Cu_<91> alloy are markedly suppressed by applying high magnetic fields, H. The electronic specific heat coefficient, which is extremely large at H=0 Oe becomes smaller for H>100 kOe. With increasing H, the magnetization curve increases nonlinearly, where the magnetic susceptibility estimated for H>100 kOe is one order smaller than that for H<10 kOe. At 4.2 K, the magnetoresistance is negative and its absolute value is very small owing to the disorder scattering. These features indicate that a dense Kondo behavior is strongly suppressed in a high magnetic field.
- Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy
Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy 38 (2), 330-337, 1993-06-30