https://doi.org/10.1140/epjb/e2013-40563-7
Regular Article
Equation of state and electrical resistivity of the heavy fermion superconductor CeCoIn5 to 51 GPa
1 Department of Physics, The University of Alabama at Birmingham, Birmingham, 35294-1170 Alabama, USA
2 National High Magnetic Field Laboratory, Florida State University, FL 32310 Tallahassee, USA
3 Lawrence Livermore National Laboratory, CA 94550 Livermore, USA
a
e-mail: dhilton@uab.edu
Received: 27 July 2012
Received in final form: 11 June 2013
Published online: 24 July 2013
We have used X-ray diffraction to study the structural phase of CeCoIn5 in external pressure. Using high-pressure X-ray diffraction, we find that the crystalline phase is stable in the P4/mmm phase for pressures ≤51.2 GPa. From our measured equation of state, we find a bulk modulus given by B0 = 72.8 ± 2.9 GPa and a first pressure derivative of B′ = 5.1 ± 0.3. Measurement of the electrical resistivity of CeCoIn5 to pressures as high as 34.4 GPa shows the existence of a peak in resistivity at p∗ = 8.2 ± 0.2 GPa.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag, 2013
