Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5

Details Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5 Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5

2010-10-15

arxiv.org/abs/1010.3175v1

Phys. Rev. Lett. 106, 087003 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.106.087003

The low-temperature thermal expansion of CeCoIn5 single crystals measured parallel and perpendicular to magnetic fields B oriented along the c axis yields the volume thermal-expansion coefficient $\beta$. Considerable deviations of $\beta(T)$ from Fermi-liquid behavior occur already within the superconducting region of the (B, T) phase diagram and become maximal at the upper critical field $B^0_{c2}$. However, $\beta(T)$ and the Gr\"uneisen parameter $\Gamma$ are incompatible with a quantum critical point (QCP) at $B^0_{c2}$, but allow for a QCP shielded by superconductivity and extending to negative pressures for $B < B^0_{c2}$. Together with literature data we construct a tentative (p, B, T) phase diagram of CeCoIn5 suggesting a quantum critical line in the (p, B) plane.

Affiliated with

Also associated with

No associations

Rating

Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards the identification of a quantum critical line in the (p, B) phase diagram of CeCoIn5 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-204174