Abstract
SmCoIn5 crystallizes in the tetragonal HoCoGa5 type structure. This type of crystal structure have attracted much attention because new heavy-fermion superconductivity with very high superconducting transition temperature Tc=18.5 K was discovered in PuCoGa5. It is expected that Sm has a similar ground state to Pu compounds. Thus we have measured the electrical resistivity on a single crystal of SmCoIn5 using a cubic anvil pressure cell at temperature 2-300 K under high pressure from 2 to 8 GPa. The value of TN that was 11.9 K at ambient pressure in SmCoIn5 increased to 13.2 K at P=2 GPa,. Above 2 GPa, It decreased monotonously with increasing pressure and was 12.6 K at 8 GPa. It may be thought that the 4f electrons in SmCoIn5 are more localized than 5f electrons in PuCoGa5.
Original language | English |
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Pages (from-to) | 62-63 |
Number of pages | 2 |
Journal | journal of the physical society of japan |
Volume | 76 |
Issue number | SUPPL. A |
DOIs | |
Publication status | Published - 2007 |
Keywords
- Electrical resistivity
- Pressure effects
- SmCoIn
ASJC Scopus subject areas
- Physics and Astronomy(all)