The electronic structure of GdN from x-ray spectroscopy Andrew Preston [email protected]...
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Transcript of The electronic structure of GdN from x-ray spectroscopy Andrew Preston [email protected]...
![Page 1: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/1.jpg)
The electronic structure of GdN from x-ray spectroscopy
Andrew Preston
Department of Physics
Boston University
![Page 2: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/2.jpg)
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Kevin Smith Louis Piper Sang Wan Cho
Alex DeMasi
NML at BU
09/09/28
![Page 3: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/3.jpg)
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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
![Page 4: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/4.jpg)
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Overview
High quality thin films Temperature dependant X-ray at the N K- and Gd M-edges
Absorption Emission Resonant emission
![Page 5: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/5.jpg)
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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
![Page 6: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/6.jpg)
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X-ray absorption (XAS)
Ef
Empty
Filled
09/09/28
1
if
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X-ray absorption (XAS)
Ef
Empty
Filled
09/09/28
2
if
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X-ray emission (XES)
Ef
Empty
Filled
09/09/28
if
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Band structure
![Page 10: The electronic structure of GdN from x-ray spectroscopy Andrew Preston andrew@preston.co.nz Department of Physics Boston University.](https://reader035.fdocuments.net/reader035/viewer/2022070412/5697bf811a28abf838c851dd/html5/thumbnails/10.jpg)
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Band structure
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N K-edge XXS
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ReN N K-edge XAS
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N K-edge XXS
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Spin-resolved PDOS
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M-edge XAS and XES
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Thanks
Appl. Phys. Lett. submitted