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  6. Single crystal growth and physical characterization to fine tune YbIn1−xTxCu4 (T = Au, Ag) towards the critical endpoint of the valence transition
 
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Title(s)
TitleLanguage
Single crystal growth and physical characterization to fine tune YbIn1−xTxCu4 (T = Au, Ag) towards the critical endpoint of the valence transition
en
 
Author(s)
NameORCIDGNDAffiliation
Ocker, Michelle 
0009-0003-4975-871X
Physics 
 
Project(s)
TRR 288: Elastic Tuning and Response of Electronic Quantum Phases of Matter 
 
Faculty
13 Physics
 
Date Issued
05 May 2025
 
Publisher(s)
Phys. Rev. B
Goethe-Universität Frankfurt
 
Handle
https://gude.uni-frankfurt.de/handle/gude/583
 
DOI
10.25716/gude.1gf6-abhx
 

Type(s) of data
Dataset
 
Language(s)
en
 
Abstract(s)
AbstractLanguage
Pure as well as Ag- and Au-substituted YbInCu$_4$ single crystals were structurally and chemically characterized and investigated by means of heat capacity, magnetization, resistivity and ultrasonic measurements.
We studied the influence of different compositions of the initial melt as well as of Au and Ag substitutions on the valence change and investigated whether this change occurs via a first-order phase transition or via crossover. We constructed a phase diagram of YbInCu$_4$ as a function of various substitutions and show that the position of the critical endpoint of the valence transition depends on the substituent and on the conditions under which the samples were grown. Multiple thermal cycles through the first-order transition lead to a significant modification of the physical properties which clearly demonstrated the influence of defects in substituted YbInCu$_4$.
en
 

License
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) cclicense-logocclicense-logocclicense-logocclicense-logo
 

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Jul 1, 2025
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Acquisition Date
Jul 1, 2025
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