Magnetic and Thermoelectric Properties of a Heterogeneous Mixed-Valence System, Yb₂Pt₃Sn₅

Intermediate valence to heavy fermion through a quantum phase transition inYb3(Rh1−xTx)Binod1, Oswald2, Chan3 et al. 2016Phys. Rev. B231170View full textAdd to dashboardCite

“…Therefore, compounds with Ce or Yb can be tuned with extrinsic parameters such as pressure, magnetic field, or doping, resulting in a variety of states such as heavy fermion (HF), 1-3 superconductivity, 4 intermediate valence, 5 and mixed valence 6,7 . While existing literature often uses intermediate and mixed valence terminology interchangeably, these actually refer to two distinct behaviors: temperature-dependent or temperature-independent mixtures of both magnetic and non-magnetic rare earth ions.…”

Two-stage pressure-induced Yb valence change in the hexagonal Laves phase YbAg2 : Investigation by time differential perturbed angular γ−γ correlation spectroscopy method and density functional calculations

“…The 4d-states of silver are involved in metal bonding, making silver in YbAg 2 analogous to other 4d transition metals (for example, Ru) with unoccupied 4d-shell and allowing for the formation of the hexagonal Laves phase. It is also remarkable that the transition to the trivalent state takes place in YbAg 2 under a relatively moderate pressure of [8][9][10][11][12][13][14][15][16] GPa.…”

Intermediate-Valence Quasicrystals of Yb-Based Alloys Under Pressure

“…For Yb-based IV crystalline compounds, 10,11) the relationship between the electronic heat coefficient (γ), which indicates the degree of electron correlations, and the Yb valence (ν) is shown in Figure 4. The plot of γ versus ν exhibits a positively correlated trend.…”