Spectroscopic Evidence for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>5</mml:mn><mml:mi>f</mml:mi></mml:math>C...

Abstract

The $5f$ spectral weight in the heavy-fermion materials U${\mathrm{Al}}_{2}$ and U${\mathrm{Pt}}_{3}$ has been measured by electron spectroscopy, and compared to that in density-functional calculations. The one-electron $5f$ widths are both too large to account for the enhanced values of the specific-heat coefficient $\ensuremath{\gamma}$, and too small to account for the measured widths. In the Anderson Hamiltonian, both discrepancies arise from the $5f$ Coulomb interaction. It is pointed out that an enhanced $\ensuremath{\gamma}$ value does not imply enhanced magnitude of the $5f$ spectral weight at ${E}_{\mathrm{F}}$.

Keywords

PhysicsCoulombHamiltonian (control theory)SpectroscopyElectronAnderson impurity modelAtomic physicsQuantum mechanicsMathematics

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Publication Info

Year: 1985
Type: article
Volume: 54
Issue: 24
Pages: 2635-2638
Citations: 100
Access: Closed

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Spectroscopic Evidence for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>5</mml:mn><mml:mi>f</mml:mi></mml:math>Coulomb Interaction in U<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>and U<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Pt</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

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APA Style

                            
                                
                                    J. W. Allen, 
                                
                                    S.-J. Oh, 
                                
                                    L. E. Cox
                                
                                et al.
                            
                            (1985). 
                            Spectroscopic Evidence for the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>5</mml:mn><mml:mi>f</mml:mi></mml:math>Coulomb Interaction in U<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Al</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>and U<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Pt</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>. 
                            Physical Review Letters
                            , 54
                            (24)
                            , 2635-2638.
                            https://doi.org/10.1103/physrevlett.54.2635
                        

Identifiers

DOI: 10.1103/physrevlett.54.2635