A directional specific heat study on the gap structure of overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$

Details A directional specific heat study on the gap structure of overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$ A directional specific heat study on the gap structure of overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$

2011-10-15

arxiv.org/abs/1110.3403v1

Physics

Condensed Matter

Superconductivity

5 pages, 4 figures

Scientific paper

Low-temperature specific heat is measured on the overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_2$As$_2$ ($x$ = 0.13) single crystal under magnetic fields along different directions. A clear anisotropy is observed on the electronic specific heat coefficient \gamma(H). The value of \gamma(H) is clearly larger with magnetic field along [001] (c-axis) than that within the ab-plane of the crystal lattice, which cannot be attributed to the effect by anisotropy of the upper critical field. Meanwhile, the data show a rather small difference when the direction of the field is rotated from [100] to [110] direction within the ab-plane. Our results suggest that a considerable part of the line nodes is not excited to contribute to the quasiparticle density of states by the field when the field is within the ab-plane. The constraint on the topology of the gap nodes is discussed based on the data.

Affiliated with

Also associated with

No associations

Rating

A directional specific heat study on the gap structure of overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$ 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 A directional specific heat study on the gap structure of overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A directional specific heat study on the gap structure of overdoped Ba(Fe$_{1-x}$Co$_{x}$)$_{2}$As$_{2}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-687681