English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Surface and bulk electronic structure of aluminium diboride

Sunko, V., Milosavljević, D., Mazzola, F., Clark, O. J., Burkhardt, U., Kim, T. K., et al. (2020). Surface and bulk electronic structure of aluminium diboride. Physical Review B, 102(3): 035143, pp. 1-9. doi:10.1103/PhysRevB.102.035143.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0006-D258-A Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D515-2
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Sunko, V.1, Author              
Milosavljević, D.1, Author              
Mazzola, F.2, Author
Clark, O. J.2, Author
Burkhardt, U.3, Author              
Kim, T. K.2, Author
Rosner, H.1, Author              
Grin, Yu.4, Author              
Mackenzie, A. P.5, Author              
King, P. D. C.2, Author
Affiliations:
1Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
2External Organizations, ou_persistent22              
3Ulrich Burkhardt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863422              
4Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              
5Andrew Mackenzie, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863463              

Content

show
hide
Free keywords: -
 Abstract: We report a combined experimental and theoretical study of the surface and bulk electronic structure of aluminium diboride, a nonsuperconducting sister compound of the superconductor MgB2. We perform angle-resolved photoemission measurements with variable photon energy, and compare them to density functional theory calculations to disentangle the surface and bulk contributions to the measured spectra. Aluminium diboride is known to be aluminium deficient, Al1-delta B2, which would be expected to lead to a hole doping as compared to the nominally stoichimoetric compound. Nonetheless, we find that the bulk a states, which mediate superconductivity in MgB2, remain more than 600 meV below the Fermi level. However, we also observe a states originating from the boron terminated surface, with an order of magnitude smaller binding energy of 70 meV, and demonstrate how surface hole-doping can bring these across the Fermi level.

Details

show
hide
Language(s): eng - English
 Dates: 2020-07-222020-07-22
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 102 (3) Sequence Number: 035143 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008