Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs

Details Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs

2008-03-31

arxiv.org/abs/0803.4487v2

CHIN. PHYS. LETT. Vol. 26, No. 1 (2009) 017401

Physics

Condensed Matter

Superconductivity

4 pages, 5 figures

Scientific paper

10.1088/0256-307X/26/1/017401

The Fermi surfaces (FS) of LaOFeAs (in $k_z$=0 plane) consist of two hole-type circles around $\Gamma$ point, which do not touch each other, and two electron-type co-centered ellipses around M point, which are degenerate along the M-X line. By first-principles calculations, here we show that additional degeneracy exists for the two electron-type FS, and the crucial role of F-doping and pressure is to enhance this orbital degeneracy. It is suggested that the inter-orbital fluctuation is the key point to understand the unconventional superconductivity in these materials.

Affiliated with

Also associated with

No associations

Rating

Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs 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 Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced Orbital Degeneracy in Momentum Space for LaOFeAs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-197823