Investigating the dependence of the spin gap and of the spin excitons in the ground state of CeB6 on the external magnetic field
Among the RB6 family of hexaborides (R being a rare earth), CeB6 stands out as the only compound that exhibits an exotic ordered phase in the narrow temperature range between 2.3 and 3.2 K, commonly referred to as an antiferroquadrupolar (AFQ) phase. Its true nature is not yet fully understood and is discussed controversially. In our recent experiment performed on the same sample at IN14, we have observed that the AFQ phase survives down to the lowest temperatures, where it coexists with the antiferromagnetic (AFM) order. We found new, very intense, resonance-like spin excitons in the ground state, maximized at the AFQ wavevector. Here, we propose to investigate the field-dependence of these new excitations at the lowest temperatures, far below the Neel transition (2.3 K), as it is known that the AFQ phase is strongly enhanced by the magnetic field, while the AFM order is suppressed by relatively small fields of the order of 1 Tesla. This experiment will allow us to pinpoint the microscopic origin of the excitons. We suggest to perform this experiment at the IN14 cold-neutron spectrometer on the same 8g single-crystalline sample grown from a 99.6 at. % isotope-enriched 11B powder.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe recommended format for citing this dataset in a research publication is in the following format:
Dmytro Inosov; FRIEMEL Gerd; GHAMBASHIDZE Giorgi; IVANOV Alexandre; JANG Hoyoung; KEIMER Bernhard; LI Yuan and PORRAS PEREZ GUERRERO Juan Pablo. (2012). Investigating the dependence of the spin gap and of the spin excitons in the ground state of CeB6 on the external magnetic field. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1064
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.