High-resolution X-ray emission and absorption study of the B 2p valence band electronic structure of MgB2

C. McGuinness; K. E. Smith; S. M. Butorin; J. H. Guo; J. Nordgren; T. Vogt; G. Schneider; J. Reilly; J. J. Tu; P. D. Johnson; D. K. Shuh

doi:10.1209/epl/i2001-00495-1

High-resolution X-ray emission and absorption study of the B 2p valence band electronic structure of MgB₂

C. McGuinness¹, K. E. Smith¹, S. M. Butorin², J. H. Guo², J. Nordgren², T. Vogt³, G. Schneider³, J. Reilly³, J. J. Tu³, P. D. Johnson³ and D. K. Shuh⁴

2001 EDP Sciences
Europhysics Letters, Volume 56, Number 1 Citation C. McGuinness et al 2001 EPL 56 112 DOI 10.1209/epl/i2001-00495-1

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¹ Department of Physics, Boston University 590 Commonwealth Avenue, Boston, MA 02215, USA

² Department of Physics, Uppsala University - Box 530, 75121 Uppsala, Sweden

³ Department of Physics, Brookhaven National Laboratory - Upton, NY 11973, USA

⁴ Chemical Sciences Division, Lawrence Berkeley National Laboratory Berkeley, CA 94720, USA

Dates

Received 30 April 2001
Accepted 6 July 2001

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Abstract

The occupied and unoccupied valence band states of MgB₂have been studied using high-resolution soft X-ray emission and soft X-ray absorption spectroscopies. In particular, the B 2ppartial density of states was measured near the Fermi level. The states at the Fermi edge are identified by comparison to calculation as being of B 2p_xy origin. Resonant inelastic X-ray scattering indicates the existence of low-energy excitations at the B 1s-edge absorption threshold.

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