Multiple quantum phase transitions and superconductivity in Ce-based heavy fermions

ZF Weng, M Smidman, L Jiao, X Lu… - Reports on Progress in …, 2016 - iopscience.iop.org
Heavy fermions have served as prototype examples of strongly-correlated electron systems.
The occurrence of unconventional superconductivity in close proximity to the electronic …

On the Ytterbium Valence and the Physical Properties in Selected Intermetallic Phases

S Engel, ECJ Gießelmann, MK Reimann… - ACS Organic & …, 2024 - ACS Publications
The present review summarizes important aspects of the crystal chemistry of ytterbium-
based intermetallic compounds along with a selection of their outstanding physical …

Negative thermal expansion in YbMn2Ge2 induced by the dual effect of magnetism and valence transition

Y Qiao, Y Song, A Sanson, L Fan, Q Sun, S Hu… - npj Quantum …, 2021 - nature.com
Negative thermal expansion (NTE) is an intriguing property, which is generally triggered by
a single NTE mechanism. In this work, an enhanced NTE (α v=− 32.9× 10− 6 K− 1, Δ T= 175 …

Topological transport properties of highly oriented Bi2Te3 thin film deposited by sputtering

L Pandey, S Husain, V Barwal, S Hait… - Journal of Physics …, 2023 - iopscience.iop.org
Topological insulators (TIs) are the promising materials for next-generation technology due
to their exotic features such as spin momentum locking, conducting surface states, etc …

Quantum valence criticality in a correlated metal

K Kuga, Y Matsumoto, M Okawa, S Suzuki, T Tomita… - Science …, 2018 - science.org
A valence critical end point existing near the absolute zero provides a unique case for the
study of a quantum version of the strong density fluctuation at the Widom line in the …

Valence fluctuations in the 3D+ 3 modulated Yb 3 Co 4 Ge 13 Remeika phase

M Feig, L Akselrud, M Motylenko, M Bobnar… - Dalton …, 2021 - pubs.rsc.org
Yb3Co4Ge13 is the first example of a Remeika phase with a 3D+ 3 [space group P3n (α, 0,
0) 000 (0, α, 0) 000 (0, 0, α) 000; a= 8.72328 (1) Å, α= 0.4974 (2)] modulated crystal …

A solid-state 171Yb NMR-spectroscopic characterization of selected divalent ytterbium intermetallics

JM Gerdes, L Schumacher, MR Hansen… - … für Naturforschung B, 2024 - degruyter.com
The intermetallic ytterbium compounds YbZnSn, YbPdSn2, YbAuIn2 and their calcium-
substituted counterparts Yb0. 5Ca0. 5ZnSn, Yb0. 5Ca0. 5PdSn2 and Yb0. 5Ca0. 5AuIn2 …

Valence instability and crystal structures in studied by x-ray absorption spectroscopy and x-ray diffraction

H Yamaoka, Y Michiue, Y Yamamoto, N Tsujii, M Arita… - Physical Review B, 2024 - APS
The electronic and crystal structures of YbCu x Ga 2− x under pressure were investigated by
high-resolution x-ray absorption spectroscopy (XAS) at the Yb-L 3 absorption edge and x …

Rare earth chalcospinels, electronic structure, intermediate-valent, and heavy-fermion character

P de la Mora, G Tavizon - Journal of Solid State Chemistry, 2023 - Elsevier
Abstract Rare earth ARE 2 X 4 (A= Cd, Mg; RE= Ho, Er, Tm, Yb, Lu; X= S, Se) spinels were
studied with quantum DFT calculations to investigate the electronic structure of these …

Enhanced Sommerfeld coefficient near the quantum critical point in YbMn6Ge6− xSnx

P Haraux, L Eichenberger, LVB Diop… - Solid State …, 2022 - Elsevier
Abstract We investigate the YbMn 6 Ge 6− x Sn x alloys (4.00≤ x≤ 5.55) by means of
specific heat measurements in the temperature range 1.9 to 200 K. For x near∼ 4.0, the …