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9 papers · 2 filters
Electronic properties of LaOFFeAs in the normal state probed by NMR/NQR
H. -J. Grafe, G. Lang, F. Hammerath +12
We report 139La, 57Fe and 75As nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements on powders of the new LaO1-xFxFeAs superconductor for x = 0 and…
Coexistence of superconductivity and charge-density waves in a two-dimensional Holstein model at half-filling
S. Sykora, A. Hübsch, K. W. Becker
In one dimension the coupling of electrons to phonons leads to a transition from a metallic to a Peierls distorted insulated state if the coupling exceeds a critical value. On the…
Strong coupling between magnetic and structural order parameters in SrFe2As2
A. Jesche, N. Caroca-Canales, H. Rosner +11
X-ray and Neutron diffraction as well as muon spin relaxation and Mössbauer experiments performed on SrFeAs polycrystalls confirm a sharp first order transition at $T_0 = 2…
Magnetism, superconductivity, and pairing symmetry in Fe-based superconductors
A. V. Chubukov, D. Efremov, I. Eremin
We analyze antiferromagnetism and superconductivity in novel based superconductors within the itinerant model of small electron and hole pockets near and . We a…
Neutron diffraction on antiferromagnetic ordering in single-crystal BaFe2As2
Y. Su, P. Link, A. Schneidewind +9
Neutron diffraction experiments have been carried out on a Sn-flux grown BaFe2As2 single crystal, the parent compound of the A-122 family of FeAs-based high-Tc superconductors. A t…
The electronic phase diagram of the LaO1-xFxFeAs superconductor
H. Luetkens, H. -H. Klauss, M. Kraken +16
The competition of magnetic order and superconductivity is a key element in the physics of all unconventional superconductors, e.g. in high-transition-temperature cuprates 1, heavy…