Experimental probing of the anisotropy of the empty p states near the Fermi level in MgB2
arXiv:cond-mat/0301575 · doi:10.1063/1.1583132
Abstract
We have studied the Boron K-edge in the superconductor MgB2 by electron energy loss spectroscopy (EELS) and experimentally resolved the empty p states at the Fermi level that have previously been observed within an energy window of 0.8eV by soft x-ray absorption spectroscopy. Using angular resolved EELS, we find that these states at the immediate edge onset have pxy character in agreement with predictions from first-principle electronic structure calculations.
15 pages, 5 figures