Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study

Details Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study

2012-02-13

arxiv.org/abs/1202.2753v1

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

The thermoelectric coefficients have been measured on the Yb-based heavy fermion compounds beta-YbAlB4 and YbRh2Si2 down to a very low temperature. We observe a striking difference in the behavior of the Seebeck coefficient, S in the vicinity of the Quantum Critical Point (QCP) in the two systems. As the critical field is approached, S/T enhances in beta-YbAlB4 but is drastically reduced in YbRh2Si2. While in the former system, the ratio of thermopower-to-specific heat remains constant, it drastically drops near the QCP in YbRh2Si2. In both systems, on the other hand, the Nernst coefficient shows a diverging behavior near the QCP. The results provide a new window to the way various energy scales of the system behave and eventually vanish near a QCP.

Affiliated with

Also associated with

No associations

Rating

Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study 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 Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermoelectric response near a quantum critical point of beta-YbAlB4 and YbRh2Si2: A comparative study will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-682507