Physics – Condensed Matter – Superconductivity
Scientific paper
2007-11-06
Physics
Condensed Matter
Superconductivity
Scientific paper
Half quantum vortices (HQVs) in superfluid $^3He-A$ have been speculated since 1976. Two years ago, Yamashita et al reported a very unusual NMR satellite in the rotating superfluid $^3He-A$ in a parallel plate geometry. Recently this satellite has been interpreted in terms of HQVs. Also, the strong flux pinnings in the triplet superconductors $UPt_3, Sr_2RuO_4$ and $U_{1-x}Th_xBe_{13}$ have been discovered by Mota and her colleagues which are interpreted in terms of HQVs. We shall first review the bound state spectra around a single vortex in unconventional superconductors, which provides the necessary background. In particular, we find the zero modes of the Majorana fermions in some of triplet superconductors $UPt_3, Sr_2RuO_4$ and $CePt_3Sn$. Armed with these results we analyze the microscopic aspects of HQVs in $UPt_3$ and $Sr_2RuO_4$. We compute the quasiparticle density of states and the local magnetic field around HQVs, which should be accessible to scanning tunneling microscopy (STM), micromagnetometry and neutron scattering below 300 mK.
Kee Hae-Young
Maki Kazumi
Raghavan Aditya
No associations
LandOfFree
Half quantum vortices and Majorana fermions in triplet superconductors 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 Half quantum vortices and Majorana fermions in triplet superconductors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Half quantum vortices and Majorana fermions in triplet superconductors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-134859