Luttinger Fermi surface of metallic gap spectral weight in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub>...

Abstract

Angle-resolved photoemission measurements for bulk single crystals of ${\mathrm{Nd}}_{2\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Ce}}_{\mathit{x}}$${\mathrm{CuO}}_{4\mathrm{\ensuremath{-}}\mathit{y}}$ with x=0.15 show that the spectral weight which builds in the gap of the x=0 insulator displays a Luttinger Fermi surface, the first such observation for a material which is electron doped and which must be driven metallic by alloying. This finding greatly strengthens our previous ocnclusion that the metal's chemical potential lies in gap-filling spectral weight, and sharpens the distinction between theories in which this does or does not occur.

Keywords

Fermi surfaceCondensed matter physicsPhysicsMetalSpectral lineFermi Gamma-ray Space TelescopeMaterials scienceQuantum mechanicsSuperconductivity

Affiliated Institutions

University of Michigan US

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Publication Info

Year: 1993
Type: article
Volume: 70
Issue: 20
Pages: 3163-3166
Citations: 107
Access: Closed

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Luttinger Fermi surface of metallic gap spectral weight in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Nd</mml:mi></mml:mrow><mml:mrow><mml:mn>1.85</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi></mml:mrow><mml:mrow><mml:mn>0.15</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CuO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="italic">y</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>

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APA Style

                            
                                
                                    R. O. Anderson, 
                                
                                    R. Claessen, 
                                
                                    J. W. Allen
                                
                                et al.
                            
                            (1993). 
                            Luttinger Fermi surface of metallic gap spectral weight in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Nd</mml:mi></mml:mrow><mml:mrow><mml:mn>1.85</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi></mml:mrow><mml:mrow><mml:mn>0.15</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CuO</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn><mml:mi mathvariant="normal">−</mml:mi><mml:mi mathvariant="italic">y</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>. 
                            Physical Review Letters
                            , 70
                            (20)
                            , 3163-3166.
                            https://doi.org/10.1103/physrevlett.70.3163
                        

Identifiers

DOI: 10.1103/physrevlett.70.3163