Are there crystal field levels in UPd2Al3? We answer, THERE ARE
| dc.creator | Radwanski, R. J. | |
| dc.creator | Ropka, Z. | |
| dc.date | 2004-12-09 | |
| dc.date | 2004-12-19 | |
| dc.date.accessioned | 2026-07-07T10:08:14Z | |
| dc.date.available | 2026-07-07T10:08:14Z | |
| dc.description | We claim that crystal field (CEF) levels exist in UPd2Al3 in contrary to a recent claim of Hiess et al. (cond-mat/0411041) and Bernhoeft et al. (cond-mat/0411042), that there is no experimental evidence for discrete crystal field levels in this superconducting heavy-fermion antiferromagnet. We claim that excitations revealed by Krimmel et al. (J. Phys.: Condens. Matter 8 (1996) 1677 in inelastic-neutron-scattering (INS) studies are i) crystal-field excitations described by us within ii) the 5f3 (U3+) configuration. Moreover, our 5f3 (U3+) scheme, presented in Physica B 276-278 (2000) 803 and in Czech. J. Phys. 54 (2004) D295, provides a clear physical explanation for the 1.7 meV excitation (magnetic exciton) as associated to the removal of the Kramers-doublet ground state degeneracy in the antiferromagnetic state. The crystal-field theory completed by strong intra-atomic correlations and intersite spin-dependent interactions to the Quantum Atomistic Solid State Theory (QUASST), offers the meV energy scale needed for description of magnetic and electronic properties of compounds containing open-shell 3d, 4f, 5f atoms. The derived set of CEF parameters for the U3+ state reproduces both the INS excitations, temperature dependence of the heat capacity, large uranium magnetic moment as well as its direction. PACS: 71.70.E, 75.10.D Keywords: Crystalline Electric Field, Heavy fermion, magnetism, UPd2Al3 | |
| dc.description | 10 pages in RevTex4, 2 figures, in version 2 only title is changed from: Are, or not, CEF levels? We answer, ARE | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0412257 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0412257 | |
| dc.identifier | Acta Physica 2 (2007) 14 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/170927 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Are there crystal field levels in UPd2Al3? We answer, THERE ARE | |
| dc.type | text |