Two energy gaps and Fermi surface 'arcs' in NbSe2

Details Two energy gaps and Fermi surface 'arcs' in NbSe2 Two energy gaps and Fermi surface 'arcs' in NbSe2

2009-04-21

arxiv.org/abs/0904.3277v1

Phys. Rev. Lett. 102 166402 (2009)

Physics

Condensed Matter

Superconductivity

Related work http://www.ifw-dresden.de/institutes/iff/research/SC/arpes

Scientific paper

10.1103/PhysRevLett.102.166402

Using angle-resolved photoemission spectroscopy (ARPES), we report on the direct observation of the energy gap in 2H-NbSe2 caused by the charge-density waves (CDW). The gap opens in the regions of the momentum space connected by the CDW vectors, which implies a nesting mechanism of CDW formation. In remarkable analogy with the pseudogap in cuprates, the detected energy gap also exists in the normal state (T>T0) where it breaks the Fermi surface into 'arcs', it is non-monotonic as a function of temperature with a local minimum at the CDW transition temperature (T0) and it forestalls the superconducting gap by excluding the nested portions of the Fermi surface from participating in superconductivity.

Affiliated with

Also associated with

No associations

Rating

Two energy gaps and Fermi surface 'arcs' in NbSe2 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 Two energy gaps and Fermi surface 'arcs' in NbSe2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two energy gaps and Fermi surface 'arcs' in NbSe2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-371737