Formation of short-range magnetic order and avoided ferromagnetic quantum criticality in pressurized <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>LaCrGe</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:math>
Elena Gati, John M. Wilde, R. Khasanov, Li Xiang, Sachith Dissanayake, Ritu Gupta, Masaaki Matsuda, Feng Ye, Bianca Haberl, Udhara S. Kaluarachchi, R. J. McQueeney, A. Kreyßig, Sergey L. Bud’ko, P. C. Canfield
Abstract
Quantum criticality is believed to be avoided in ferromagnetic metals for fundamental reasons, which gives rise to a manifold of realized phase diagrams. Here, the authors revisit the temperature-pressure phase diagram of a prime example system (LaCrGe${}_{3}$), to explore the avoided criticality by thermodynamic and microscopic techniques. The results strongly suggest that a short-range magnetically ordered cluster phase emerges as the ferromagnetic transition is suppressed towards zero temperature. This insight points towards the influence of disorder that is inevitably present even in stoichiometric compounds.