Multiple charge density wave transitions in Lu_{2} Ir_{3} Si_{5} single crystal

TL;DR

This study investigates Lu_{2} Ir_{3} Si_{5} single crystals, revealing multiple charge density wave transitions with strong first-order characteristics, and shows how high magnetic fields can suppress some of these transitions.

Contribution

It reports the discovery of multiple CDW transitions in Lu_{2} Ir_{3} Si_{5} and characterizes their first-order nature and field dependence, which is novel for this compound.

Findings

Multiple CDW transitions observed in all measurements.

Strong thermal hysteresis indicates first-order transitions.

High magnetic field suppresses one of the CDW transitions.

Abstract

The physical properties of the single-crystalline samples of Lu_{2} Ir_{3} Si_{5} have been investigated by magnetic susceptibility, resistivity and heat capacity studies. We observed multiple charge density wave (CDW) transitions in all the measurements. A strong thermal hysteresis at these transitions suggests a possible first order CDW ordering. In addition, the first order nature is ascertained by a very narrow and a huge cusp (62 J/mol K) in the zero field specific heat data which also suggests a strong interchain coupling. By applying a field of 9T in the specific heat measurement, one of the CDW transitions is suppressed.