Multipolar phases and magnetically hidden order: review of the heavy-fermion compound Ce1-xLaxB6
Research output: Contribution to journal › Review article › Contributed › peer-review
Contributors
Abstract
Cerium hexaboride is a cubic f-electron heavy-fermion compound that displays a rich array of low-temperature magnetic ordering phenomena which have been the subject of investigation for more than 50 years. Its complex behaviour is the result of competing interactions, with both itinerant and local electrons playing important roles. Investigating this material has proven to be a substantial challenge, in particular because of the appearance of a 'magnetically hidden order' phase, which remained elusive to neutron-scattering investigations for many years. It was not until the development of modern x-ray scattering techniques that the long suspected multipolar origin of this phase was confirmed. Doping with non-magnetic lanthanum dilutes the magnetic cerium sublattice and reduces the f-electron count, bringing about substantial changes to the ground state with the emergence of new phases and quantum critical phenomena. To this day, Ce1-xLaxB6 and its related compounds remain a subject of intense interest. Despite the substantial progress in understanding their behaviour, they continue to reveal new and unexplained physical phenomena. Here we present a review of the accumulated body of knowledge on this family of materials in order to provide a firm standpoint for future investigations.
Details
Original language | English |
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Article number | 066502 |
Number of pages | 27 |
Journal | Reports on progress in physics |
Volume | 79 |
Issue number | 6 |
Publication status | Published - Jun 2016 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
Scopus | 84979503497 |
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Keywords
Keywords
- multipolar ordering, magnetically hidden order, heavy fermions, cerium hexaboride, INELASTIC NEUTRON-SCATTERING, CRYSTAL-FIELD EXCITATIONS, ANTIFERRO-QUADRUPOLAR, EXCHANGE INTERACTIONS, ELECTRICAL-RESISTIVITY, ELASTIC PROPERTIES, CHARGE-TRANSPORT, LIQUID BEHAVIOR, CYCLOTRON MASS, KONDO-LATTICE