J. Phys. Soc. Jpn. 90, 064706 (2021) [6 Pages]
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Single Crystal Growth and Hydrostatic Pressure Study of Charge Density Wave Quantum Critical Lu(Pt1−xPdx)2In

Thomas Gruner1, , Stephen Andrew Hodgson1 , Christoph Geibel2, Oliver Stockert2, and Friedrich Malte Grosche1
+ Affiliations
1Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.2Max Planck Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany
Received March 11, 2021; Accepted April 14, 2021; Published May 19, 2021

Determining the origin and consequences of novel phase transitions is a key task in condensed matter physics research. Recently, Lu(Pt1−xPdx)2In was discovered to present a very rare case of strongly enhanced superconductivity at a charge density wave (CDW) quantum critical point (QCP). Unlike in most other systems, the CDW transition here is of second-order. By tuning it continuously to absolute zero temperature with variation of an external non-thermal control parameter, for instance chemical composition x or pressure p, a CDW QCP is approached. We present how we succeeded in synthesising large high-quality single crystals of the new Lu(Pt1−xPdx)2In series with a large number of intermediate concentrations x. We briefly provide information about the challenges in growing phase-pure single crystals. Furthermore, different anomalies in the temperature dependences of magnetic susceptibility χ(T) and electrical resistivity ρ(T) are presented and discussed. The availability of excellent crystals allowed us to investigate the effect of applied hydrostatic pressure p on the CDW and the superconducting state in Lu(Pt0.5Pd0.5)2In by ρ(T)|p measurements.

©2021 The Physical Society of Japan
https://doi.org/10.7566/JPSJ.90.064706

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