title: Charge-density-wave transitions in the local-moment magnet Er5Ir4Si10
abstract: We report the observation of a new type of charge-density wave (CDW) in the large magnetic-moment rare-earth intermetallic compound, Er5Ir4Si10, which then orders magnetically at low temperatures. Single crystal x-ray diffraction shows the development of a 1D incommensurate CDW at 155 K, which then locks into a purely commensurate state below 55 K. The well-localized Er3+ moments are antiferromagnetically ordered below 2.8 K. We observe very sharp anomalies in the specific heat at 145 and 2.8 K, signifying the bulk nature of these transitions. Our data suggest the coexistence of strongly coupled CDW with local-moment antiferromagnetism in Er5Ir4Si10.
authors.affiliation: Kamerlingh Onnes Laboratory, Leiden University, 2300 RA Leiden, The Netherlands.
authors.initials: F
authors.lastname: Galli
authors.initials: S
authors.lastname: Ramakrishnan
authors.initials: T
authors.lastname: Taniguchi
authors.initials: GJ
authors.lastname: Nieuwenhuys
authors.initials: JA
authors.lastname: Mydosh
authors.initials: S
authors.lastname: Geupel
authors.initials: J
authors.lastname: Ludecke
authors.lastname: van Smaalen S