Abstract
Thermoelectric power S of single crystals for a nonmagnetic heavy fermion compound CeNi2Ge2 and for the alloys of Ce(Ni1-xPdx)2Ge2 was investigated well below 1 K. S/T, S divided by temperature T, logarithmically increases with lowering temperature below 10 K, approaching a large magnitude of about 10 μV/K2 in the lowest temperatures along the c-axis of a tetragonal crystal structure for the sample with x=0.06. This behavior strikingly coincides with the temperature dependence of C/T which leads to a large Sommerfeld coefficient γ of 630 mJ/K2 mol in the zero-temperature limit. On the other hand, S/T for CeNi2Ge2 shows a complex temperature dependence at low temperatures in both axes, and is different from its C/T behavior. These results are regarded as the consequence originating from a non-Fermi-liquid nature evolved at low temperatures in the vicinity of the antiferromagnetic quantum critical point.
Original language | English |
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Pages (from-to) | 146-147 |
Number of pages | 2 |
Journal | Physica B: Condensed Matter |
Volume | 378-380 |
Issue number | SPEC. ISS. |
DOIs | |
Publication status | Published - May 1 2006 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering