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  Formation of heavy d-electron quasiparticles in Sr3Ru2O7

Allan, M. P., Tamai, A., Rozbicki, E., Fischer, M. H., Voss, J., King, P. D. C., et al. (2013). Formation of heavy d-electron quasiparticles in Sr3Ru2O7. New Journal of Physics, 15: 063029, pp. 1-10. doi:10.1088/1367-2630/15/6/063029.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-F305-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-F309-C
Genre: Journal Article

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 Creators:
Allan, M. P.1, Author
Tamai, A.1, Author
Rozbicki, E.1, Author
Fischer, M. H.1, Author
Voss, J.1, Author
King, P. D. C.1, Author
Meevasana, W.1, Author
Thirupathaiah, S.1, Author
Rienks, E.1, Author
Fink, J.1, Author
Tennant, D. A.1, Author
Perry, R. S.1, Author
Mercure, J. F.1, Author
Wang, M. A.1, Author
Lee, Jinho1, Author
Fennie, C, J.1, Author
Kim, E.-A.1, Author
Lawler, M. J.1, Author
Shen, K. M.1, Author
Mackenzie, A. P.2, Author              
Shen, Z.-X.1, AuthorBaumberger, F.1, Author more..
Affiliations:
1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: The phase diagram of Sr3Ru2O7 shows hallmarks of strong electron correlations despite the modest Coulomb interaction in the Ru 4d shell. We use angle-resolved photoelectron spectroscopy measurements to provide microscopic insight into the formation of the strongly renormalized heavy d-electron liquid that controls the physics of Sr3Ru2O7. Our data reveal itinerant Ru 4d-states confined over large parts of the Brillouin zone to an energy range of <6 meV, nearly three orders of magnitude lower than the bare band width. We show that this energy scale agrees quantitatively with a characteristic thermodynamic energy scale associated with quantum criticality and illustrate how it arises from a combination of back-folding due to a structural distortion and the hybridization of light and strongly renormalized, heavy quasiparticle bands. The resulting heavy Fermi liquid has a marked k-dependence of the renormalization which we relate to orbital mixing along individual Fermi surface sheets.

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 Dates: 2013-06-20
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1088/1367-2630/15/6/063029
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Title: New Journal of Physics
  Other : New J. Phys.
Source Genre: Journal
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Publ. Info: Bristol, UK : Institute of Physics Pub.
Pages: - Volume / Issue: 15 Sequence Number: 063029 Start / End Page: 1 - 10 Identifier: ISSN: 1367-2630
CoNE: /journals/resource/954926913666