scholarly journals Frontispiece: Intermediate Valence States in Lanthanide Compounds

2021 ◽  
Vol 27 (23) ◽  
Author(s):  
Maxime Tricoire ◽  
Nolwenn Mahieu ◽  
Thomas Simler ◽  
Grégory Nocton
Keyword(s):  
Intermediate Valence ◽  
Valence States

Intermediate valence states in the Falicov-Kimball model

1978 ◽  
Vol 17 (2) ◽  
pp. 758-764 ◽  
Author(s):  
J. W. Schweitzer
Keyword(s):  
Intermediate Valence ◽  
Valence States

scholarly journals Intermediate valence states in lanthanide compounds

2020 ◽  
Author(s):  
Maxime Tricoire ◽  
Nolwenn Mahieu ◽  
Thomas Simler ◽  
Grégory Nocton
Keyword(s):  
Intermediate Valence ◽  
Valence States

Mixed valence and superconductivity

2007 ◽  
Vol 366 (1862) ◽  
pp. 47-54 ◽  
Author(s):  
Sven Larsson
Keyword(s):  
Potential Energy Surfaces ◽  
Inelastic Neutron Scattering ◽  
Mixed Valence ◽  
Inelastic Neutron ◽  
Intermediate Valence ◽  
Phonon Modes ◽  
X Ray ◽  
X Ray Scattering ◽  
Valence States ◽  
Energy Surfaces

Mixed-valence (MV) systems are referred to here as MV-2 and MV-3 depending on whether two or three consecutive valence states are involved. MV-3 systems range from systems with Hubbard U ≫0, corresponding to a single stable, intermediate valence state, and U ≪0, corresponding to stable alternating valences differing by two units. Experiments using inelastic neutron scattering or inelastic X-ray scattering show softening of breathing phonon modes in MV systems compared with related systems with a single valence. It is hypothesized that softening is due to coupling between potential energy surfaces, corresponding to differing localizations of the electron. As predicted, softening is larger in the delocalized case. A mechanism for superconductivity is suggested.

scholarly journals Transport in carbon nanotubes: Two-level SU(2) regime reveals subtle competition between Kondo and intermediate valence states

2011 ◽  
Vol 83 (12) ◽  
Author(s):  
C. A. Büsser ◽  
E. Vernek ◽  
P. Orellana ◽  
G. A. Lara ◽  
E. H. Kim ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Intermediate Valence ◽  
Valence States

Valence state analysis of elements by EPMA and its application

1990 ◽  
Vol 48 (2) ◽  
pp. 230-231
Author(s):  
Chen Liqing ◽  
Liu Zuqin ◽  
Zhang Wei
Keyword(s):  
Valence State ◽  
Line Intensities ◽  
Valence States ◽  
Valence Electrons ◽  
Fe And Mn ◽  
Intensity Ratios ◽  
State Analysis

Valence state analyses of Fe and Mn in oxides by EPMA have been reported in literature. In this paper, the effects of valence state on intensity ratios ILα/IKα and ILα/ILβ of Cu, Ni, Co, Fe, Mn, Cr and their oxides, and on intensity ratios ILβ2/ILα1 and ILγ1/ILα1 of Mo, Nb, Zr and their oxides were studied. It was observed that intensity ratios change with valence states in accordance with some regularities, and these effects could be utilized for analyzing the valence states of catalysts.Valence state analysis of elements by EPMA is based on the fact that changes in the states of valence electrons in the outer shells of an atom cause corresponding changes in line intensities. The M electrons of Cu, Ni, Co, Fe, Mn, Cr and the N electrons of Mo, Nb, Zr are valence electrons. Line Kα1,2 and six lines of L are produced from the transitions of K-L2,3 and L-M or L-N respectively.

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