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Soft x-ray spectroscopy measurements of the p-like density of states of B in MgB2 and evidence for surface boron oxides on exposed surfaces | T. A. Callcott
; L. Lin
; G. T. Woods
; G. P. Zhang
; J. R. Thompson
; M. Paranthaman
; D. L. Ederer
; | Date: |
28 Mar 2001 | Subject: | Superconductivity | cond-mat.supr-con | Affiliation: | 1,2), M. Paranthaman, and D. L. Ederer ( The University of Tennessee, Knoxville, TN, Oak Ridge National Laboratory, Oak ridge, TN, Tulane University, New Orleans, LA | Abstract: | Soft X-ray absorption and fluorescence measurements are reported for the K-edge of B in MgB2. The measurements confirm a high density of B pxy(sigma)-states at the Fermi edge and extending to approximately 0.9 eV above the edge. A strong resonance is observed in elastic scattering through a core-exciton derived from out-of-plane pz(pi*)-states. Another strong resonance, observed in both elastic and inelastic spectra, is identified as a product of surface boron oxides. | Source: | arXiv, cond-mat/0103593 | Services: | Forum | Review | PDF | Favorites |
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