Cluster-glass dynamics of the Griffiths phase in Tb5−xLaxSi2Ge2

Work at the University of Zaragoza is supported by the Spanish Ministerio de Ciencia, Innovacion y Universidades MAT2017-82970-C2-2-R and Spanish DGA (Grant No. E26). Work at the University of Cantabria is supported by the Spanish Ministerio de Ciencia, Innovacion y Universidades MAT2017-83631-C3-R. J.H.B. would like to thank CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement.