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Orbitally selective breakdown of Fermi liquid quasiparticles in Ca1.8Sr0.2RuO4

Sutter, D. (author)
Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
Kim, M. (author)
Coll France, F-75231 Paris 05, France;Univ Paris Saclay, Ctr Phys Theor, CNRS, Ecole Polytech, F-91128 Palaiseau, France
Matt, C. E. (author)
Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
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Horio, M. (author)
Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
Fittipaldi, R. (author)
CNR SPIN, I-84084 Salerno, Italy;Univ Salerno, Dipartimento Fis ER Caianiello, I-84084 Salerno, Italy
Vecchione, A. (author)
CNR SPIN, I-84084 Salerno, Italy;Univ Salerno, Dipartimento Fis ER Caianiello, I-84084 Salerno, Italy
Granata, V (author)
CNR SPIN, I-84084 Salerno, Italy;Univ Salerno, Dipartimento Fis ER Caianiello, I-84084 Salerno, Italy
Hauser, K. (author)
Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
Sassa, Yasmine (author)
Uppsala universitet,Molekyl- och kondenserade materiens fysik
Gatti, G. (author)
Ecole Polytech Fed Lausanne, Inst Phys, CH-1015 Lausanne, Switzerland
Grioni, M. (author)
Ecole Polytech Fed Lausanne, Inst Phys, CH-1015 Lausanne, Switzerland
Hoesch, M. (author)
Diamond Light Source, Harwell Campus, Didcot OX11 0DE, Oxon, England
Kim, T. K. (author)
Diamond Light Source, Harwell Campus, Didcot OX11 0DE, Oxon, England
Rienks, E. (author)
Helmholtz Zentrum Berlin, Bessy 2, D-12489 Berlin, Germany
Plumb, N. C. (author)
Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
Shi, M. (author)
Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
Neupert, T. (author)
Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
Georges, A. (author)
Coll France, F-75231 Paris 05, France;Univ Paris Saclay, Ctr Phys Theor, CNRS, Ecole Polytech, F-91128 Palaiseau, France;Univ Geneva, Dept Quantum Matter Phys, CH-1211 Geneva 4, Switzerland;Flatiron Inst, Ctr Computat Quantum Phys, 162 5th Ave, New York, NY 10010 USA
Chang, J. (author)
Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland
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 (creator_code:org_t)
AMER PHYSICAL SOC, 2019
2019
English.
In: Physical Review B. - : AMER PHYSICAL SOC. - 2469-9950 .- 2469-9969. ; 99:12
Related links:
https://urn.kb.se/re...
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https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We present a comprehensive angle-resolved photoemission spectroscopy study of Ca1.8Sr0.2RuO4. Four distinct bands are revealed and along the Ru-O bond direction their orbital characters are identified through a light polarization analysis and comparison to dynamical mean-field theory calculations. Bands assigned to d(xz),d(yz) orbitals display Fermi liquid behavior with fourfold quasiparticle mass renormalization. Extremely heavy fermions-associated with a predominantly d(xy) band character-are shown to display non-Fermi-liquid behavior. We thus demonstrate that Ca1.8Sr0.2RuO4 is a hybrid metal with an orbitally selective Fermi liquid quasiparticle breakdown.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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