dc.creator | Michor, H. | |
dc.creator | Sereni, Julian Gustavo Renzo | |
dc.creator | Giovannini, M. | |
dc.creator | Kampert, E. | |
dc.creator | Salamakha, L. | |
dc.creator | Hilscher, G. | |
dc.creator | Bauer, E. | |
dc.date.accessioned | 2021-02-19T19:11:16Z | |
dc.date.accessioned | 2022-10-15T05:43:57Z | |
dc.date.available | 2021-02-19T19:11:16Z | |
dc.date.available | 2022-10-15T05:43:57Z | |
dc.date.created | 2021-02-19T19:11:16Z | |
dc.date.issued | 2017-03 | |
dc.identifier | Michor, H.; Sereni, Julian Gustavo Renzo; Giovannini, M.; Kampert, E.; Salamakha, L.; et al.; Elucidating the lack of magnetic order in the heavy-fermion CeCu2Mg; American Physical Society; Physical Review B; 95; 11; 3-2017; 1-7 | |
dc.identifier | 2469-9950 | |
dc.identifier | http://hdl.handle.net/11336/126141 | |
dc.identifier | 2469-9969 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/4351190 | |
dc.description.abstract | Magnetic, transport, and thermal properties of CeCu2Mg are investigated to elucidate the lack of magnetic order in this heavy-fermion compound with a specific heat value, Cmag/T|T→0≈1.2 J/mol K2 and robust effective magnetic moments (μeff≈2.46μB). The lack of magnetic order is attributed to magnetic frustration favored by the hexagonal configuration of the Ce sublattice. In fact, the effect of magnetic field on Cmag/T and residual resistivity ρ0 does not correspond to that of a Fermi liquid (FL) because a broad anomaly appears at Tmax≈1.2 K in Cmag(T)/T, without changing its position up to μ0H=7.5 T. However, the flattening of Cmag/T|T→0 and its magnetic susceptibility χT→0, together with the T2 dependence of ρ(T), reveal a FL behavior for T≤2 K which is also supported by Wilson and Kadowaki-Woods ratios. The unusual coexistence of FL and frustration phenomena can be understood by placing paramagnetic CeCu2Mg in an intermediate section of a frustration-Kondo model. The entropy, Smag, reaches 0.87Rln6 at T≃100 K, with a tendency to approach the expected value Smag=Rln6 of the J=5/2 ground state of Ce3+. | |
dc.language | eng | |
dc.publisher | American Physical Society | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevB.95.115146 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prb/abstract/10.1103/PhysRevB.95.115146 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | MAGNETISM | |
dc.subject | FRUSTRATION | |
dc.subject | CE COMPOUNDS | |
dc.title | Elucidating the lack of magnetic order in the heavy-fermion CeCu2Mg | |
dc.type | info:eu-repo/semantics/article | |
dc.type | info:ar-repo/semantics/artículo | |
dc.type | info:eu-repo/semantics/publishedVersion | |