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Angle Resolved Photoemission from Nd(1.85)Ce(0.15)CuO(4) using High Energy Photons : A Fermi Surface Investigation
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- Claesson, Thomas (author)
- KTH,Mikroelektronik och informationsteknik, IMIT
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- Månsson, Martin (author)
- KTH,Mikroelektronik och informationsteknik, IMIT
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- Dallera, Claudia (author)
- INFM-Dipartimento di Fisica, Politecnico di Milano, Italy
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- 2004
- 2004
- English.
- In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 93:13, s. 136402-1-136402-4
- Journal article (peer-reviewed)
Abstract
Subject headings
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- We have performed an angle resolved photoemission study on a single crystal of the optimally electron doped (n-type) cuprate superconductor Nd2-xCexCuO4 (x=0.15) at a photon energy of 400 eV. The Fermi surface is mapped out and is, in agreement with earlier measurements, of hole-type with the expected Luttinger volume. However, comparing with previous low energy measurements, we observe a different Fermi surface shape and a different distribution of spectral intensity around the Fermi surface contour. The observed Fermi surface shape indicates a stronger electron correlation in the bulk as compared to the surface.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Keyword
- Antiferromagnetism; Doping (additives); Electric power measurement; Electron energy analyzers; Electronic structure; Electrons; Fermi surface; Neodymium compounds; Oxide superconductors; Photons; Single crystals; Synchrotron radiation
- Semiconductor physics
- Halvledarfysik
- Material physics with surface physics
- Materialfysik med ytfysik
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- ref (subject category)
- art (subject category)
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- Tjernberg, Oscar
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