1 / 16

The electronic structure of GdN from x-ray spectroscopy

The electronic structure of GdN from x-ray spectroscopy. Andrew Preston andrew@preston.co.nz Department of Physics Boston University. NML at BU. Co-authors. Ben Ruck , Joe Trodahl Victoria University of Wellington, New Zealand Walter Lambrecht Case Western Reserve James Downes

wylie
Download Presentation

The electronic structure of GdN from x-ray spectroscopy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University

  2. NML at BU

  3. Co-authors • Ben Ruck, Joe Trodahl • Victoria University of Wellington, New Zealand • Walter Lambrecht • Case Western Reserve • James Downes • Macquari University, Australia • Louis Piper, Kevin Smith • Boston University

  4. Overview • High quality thin films • Temperature dependant • X-ray at the N K- and GdM-edges • Absorption • Emission • Resonant emission

  5. GdN • Half-filled 4f shell • Phys. Rev. B 73, 235335 (2006) • Semiconducting • Ferromagnetic 70 K • Phys. Rev. B 76, 085211 (2007) • Optical redshift • J. Appl. Phys. 106, 063910 (2009) • Epitaxial GdN • n ~ 4 x 1020 cm-3 • Negative magnetoresistance • YSZ capping layer

  6. X-ray absorption (XAS) Empty Ef Filled

  7. X-ray absorption (XAS) Empty Ef Filled

  8. X-ray emission (XES) Empty Ef Filled

  9. Band structure

  10. Band structure

  11. N K-edge XXS

  12. ReN N K-edge XAS

  13. N K-edge XXS

  14. Spin-resolved PDOS

  15. M-edge XAS and XES

  16. Thanks • Appl. Phys. Lett. submitted

More Related