Physics – Condensed Matter – Superconductivity
Scientific paper
2011-11-28
Phys. Rev. B 85, 085121 (2012)
Physics
Condensed Matter
Superconductivity
11 pages, 9 figures
Scientific paper
10.1103/PhysRevB.85.085121
The superconductivity discovered in iron-pnictides is intimately related to a nematic ground state, where the C4 rotational symmetry is broken via the structural and magnetic transitions. We here study the nematicity in NaFeAs with the polarization dependent angle-resolved photoemission spectroscopy. A uniaxial strain was applied on the sample to overcome the twinning effect in the low temperature C2-symmetric state, and obtain a much simpler electronic structure than that of a twinned sample. We found the electronic structure undergoes an orbital-dependent reconstruction in the nematic state, primarily involving the dxy- and dyz-dominated bands. These bands strongly hybridize with each other, inducing a band splitting, while the dxz-dominated bands only exhibit an energy shift without any reconstruction. These findings suggest that the development of orbital-dependent spin polarization is likely the dominant force to drive the nematicity, while the ferro-orbital ordering between dxz and dyz orbitals can only play a minor role here.
Aeschlimann Martin
Chen Fangpei
Cui Xiao-Yu
Feng D. L.
Ge Qing-Qin
No associations
LandOfFree
Symmetry breaking via orbital-dependent reconstruction of electronic structure in uniaxially strained NaFeAs 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 Symmetry breaking via orbital-dependent reconstruction of electronic structure in uniaxially strained NaFeAs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Symmetry breaking via orbital-dependent reconstruction of electronic structure in uniaxially strained NaFeAs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-67520