Spin-exchange Hamiltonian and topological degeneracies in elemental gadolinium
Source abstract
Abstract
Elemental Gd is a textbook example of a spin-only ferromagnet, but due to its complex magnon dispersion, its magnetic exchange Hamiltonian has never been fully determined. Here, the authors use modern inelastic time-of-flight neutron scattering to fully map and fit the Gd spectrum to a spin wave model. The results show long-range magnetic interactions, in accord with RKKY conduction-mediated exchange. The authors also identify symmetry-protected topological degeneracies in the magnon dispersion, which should appear in other ferromagnetic hcp metals.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Magnetic properties of thin films · Nuclear Physics and Applications · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187 Dresden, Germany
Quantum Science Center, Oak Ridge National Laboratory, Tennessee 37831, USA
Funding
U.S. Department of Energy · Office of Science · Basic Energy Sciences · Division of Materials Sciences and Engineering
References (48)
Show source-provided references
1. G. Urbain · Comptes Rendus · 1935 · 200 · 2132
2. D. Bauer · 2011
3. D. Schüler · Öko-Institut eV Darmstadt · 2011 · 49 · 30
4. 10.1063/PT.3.439710.1063/PT.3.4397 ↗
5. 10.1103/PhysRevLett.128.09720110.1103/PhysRevLett.128.097201 ↗
6. 10.1103/PhysRev.132.109210.1103/PhysRev.132.1092 ↗
7. 10.1103/PhysRev.165.73310.1103/PhysRev.165.733 ↗
8. 10.1103/PhysRevB.5.99710.1103/PhysRevB.5.997 ↗
9. 10.1103/RevModPhys.25.22910.1103/RevModPhys.25.229 ↗
10. 10.1103/PhysRevLett.45.5010.1103/PhysRevLett.45.50 ↗
11. 10.1038/4336310.1038/43363 ↗
12. 10.1103/PhysRevB.72.09442310.1103/PhysRevB.72.094423 ↗
13. 10.1103/PhysRevB.79.05440610.1103/PhysRevB.79.054406 ↗
14. 10.1103/PhysRevLett.24.1610.1103/PhysRevLett.24.16 ↗
15. G. L. Squires · 201210.1017/CBO9781139107808 ↗
16. J. Jensen · 199110.1093/oso/9780198520276.001.0001 ↗
17. 10.1103/PhysRevB.17.234810.1103/PhysRevB.17.2348 ↗
18. 10.1063/1.487005010.1063/1.4870050 ↗
19. 10.1088/1742-6596/251/1/01205810.1088/1742-6596/251/1/012058 ↗
20. 10.1016/j.physb.2006.05.37910.1016/j.physb.2006.05.379 ↗
21. 10.1016/j.physb.2006.05.28110.1016/j.physb.2006.05.281 ↗
22. 10.1016/j.nima.2014.07.02910.1016/j.nima.2014.07.029 ↗
23. 10.1038/s41592-019-0686-210.1038/s41592-019-0686-2 ↗
24. 10.1063/1.32888810.1063/1.328888 ↗
25. 10.1103/PhysRevB.32.171010.1103/PhysRevB.32.1710 ↗
26. 10.1103/PhysRevB.39.1173210.1103/PhysRevB.39.11732 ↗
27. 10.1103/PhysRev.96.9910.1103/PhysRev.96.99 ↗
28. 10.1143/PTP.16.4510.1143/PTP.16.45 ↗
29. 10.1103/PhysRev.106.89310.1103/PhysRev.106.893 ↗
30. 10.1088/0305-4608/7/7/02110.1088/0305-4608/7/7/021 ↗
31. 10.1088/0953-8984/15/17/32710.1088/0953-8984/15/17/327 ↗
32. 10.1103/PhysRevLett.91.11660110.1103/PhysRevLett.91.116601 ↗
33. 10.1103/PhysRev.178.72510.1103/PhysRev.178.725 ↗
34. 10.1103/PhysRevLett.35.38310.1103/PhysRevLett.35.383 ↗
35. 10.1063/1.170969210.1063/1.1709692 ↗
36. 10.1088/0022-3719/3/2S/30810.1088/0022-3719/3/2S/308 ↗
37. 10.1103/PhysRevB.100.10040510.1103/PhysRevB.100.100405 ↗
38. 10.1103/PhysRevB.36.851210.1103/PhysRevB.36.8512 ↗
39. 10.1103/PhysRev.120.9110.1103/PhysRev.120.91 ↗
40. 10.1088/0953-8984/27/16/16600210.1088/0953-8984/27/16/166002 ↗
41. 10.1103/PhysRevLett.26.14010.1103/PhysRevLett.26.140 ↗
42. 10.1063/1.216362310.1063/1.2163623 ↗
43. 10.1016/0921-4526(95)92829-Y10.1016/0921-4526(95)92829-Y ↗
44. 10.1103/PhysRev.162.31510.1103/PhysRev.162.315 ↗
45. 10.1088/0022-3719/8/20/02010.1088/0022-3719/8/20/020 ↗
46. 10.1093/comjnl/7.2.15510.1093/comjnl/7.2.155 ↗
47. W. H. Press · 2007
48. F. Pedregosa · J. Mach. Learn. Res. · 2011 · 12 · 2825