| Full text | |
| Author(s): |
Piva, M. M.
[1, 2]
;
Zhu, W.
[1, 3, 4]
;
Ronning, F.
[1]
;
Thompson, J. D.
[1]
;
Pagliuso, P. G.
[2]
;
Rosa, P. F. S.
[1]
Total Authors: 6
|
| Affiliation: | [1] Los Alamos Natl Lab, Los Alamos, NM 87545 - USA
[2] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[3] Westlake Univ, Inst Nat Sci, Westlake Inst Adv Study, Hangzhou 310024, Zhejiang - Peoples R China
[4] Westlake Univ, Sch Sci, Hangzhou 310024, Zhejiang - Peoples R China
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW MATERIALS; v. 3, n. 7 JUL 23 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
Here, we report the structural and electronic properties of CeAu2Bi, a new heavy-fermion compound crystallizing in a nonsymmorphic hexagonal structure (P63/mmc). The Ce3+ ions form a triangular lattice which orders antiferromagnetically below T-N = 3.1 K with a magnetic hard axis along the c axis. Under applied pressure, T-N increases linearly at a rate of 0.07 K/kbar, indicating that the Ce f electrons are fairly localized. In fact, heat capacity measurements provide an estimate of 150(10) mJ/mol K-2 for the Sommerfeld coefficient. The crystal-field scheme obtained from our thermodynamic data points to a ground state with a dominantly vertical bar j(z) = +/- 1/2 > character, which commonly occurs in systems with a hard c axis. Finally, electronic band structure calculations and symmetry analysis in k space reveal that CeAu2Bi hosts symmetry-protected crossings at k(z) = pi in the paramagnetic state. (AU) | |
| FAPESP's process: | 17/10581-1 - Emergent phenomena in reduced dimension systems |
| Grantee: | Pascoal Jose Giglio Pagliuso |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 15/15665-3 - Studies of orbital differentiation effects in the magnetic and superconducting properties of FeAs based compounds |
| Grantee: | Mário Moda Piva |
| Support type: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 17/25269-3 - High pressure studies in SrFe2As2, CaMn2Bi2 and CeAuBi2 compounds |
| Grantee: | Mário Moda Piva |
| Support type: | Scholarships abroad - Research Internship - Doctorate (Direct) |