Physics – Condensed Matter – Superconductivity
Scientific paper
2008-06-26
Physics
Condensed Matter
Superconductivity
5 pages, 4 figures Minor changes: fixed unit cell size, added references
Scientific paper
The discovery of high temperature superconductivity in La[O1-xFx]FeAs at the beginning of this year [1] has generated much excitement and has led to the rapid discovery of similar compounds with as high as 55 K transition temperatures [2]. The high superconducting transition temperatures are seemingly incompatible with the electron-phonon driven pairing of conventional superconductors, resulting in wide speculation as to the mechanism and nature of the superconductivity in these materials. Here we report results of the first scanning tunneling microscopy study of the 32 K superconductor (Sr1-xKx)Fe2As2. We find two distinct topographic regions on the sample, one with no apparent atomic corrugation, and another marked by a stripe-like modulation at double the atomic periodicity. In the latter the stripes appear to modulate the local density of states, occasionally revealing a Delta = 10 mV gap with a shape consistent with unconventional (non-s wave) superconductivity.
Boyer M. C.
Chatterjee Kamalesh
Chen Guo-Feng
Hudson E. W.
Luo Jian-Lin
No associations
LandOfFree
Scanning tunneling microscopy of the 32 K superconductor (Sr1-xKx)Fe2As2 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 Scanning tunneling microscopy of the 32 K superconductor (Sr1-xKx)Fe2As2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning tunneling microscopy of the 32 K superconductor (Sr1-xKx)Fe2As2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-692100