| Full text | |
| Author(s): Show less - |
Holanda, L. M.
[1]
;
Mendonca-Ferreira, L.
[2]
;
Ribeiro, R. A.
[2]
;
Osorio-Guillen, J. M.
[2, 3]
;
Dalpian, G. M.
[2]
;
Kuga, K.
[4]
;
Nakatsuji, S.
[4]
;
Fisk, Z.
[5]
;
Urbano, R. R.
[1]
;
Pagliuso, P. G.
[1, 5]
;
Rettori, C.
[1, 2]
Total Authors: 11
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[2] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil
[3] Univ Antioquia, Inst Fis, Medellin - Colombia
[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581 - Japan
[5] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 - USA
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF PHYSICS-CONDENSED MATTER; v. 25, n. 21 MAY 29 2013. |
| Web of Science Citations: | 4 |
| Abstract | |
This work reports on electron spin resonance experiments in oriented single crystals of the hexagonal AlB2 diboride compound (P6/mmm, D16h structure) which display conduction electron spin resonance. The X-band electron spin resonance spectra showed a metallic Dysonian resonance with g-value and intensity independent of temperature. The thermal broadening of the anisotropic electron spin resonance linewidth Delta H tracks the T-dependence of the electrical resistivity below T similar or equal to 100 K. These results confirm the observation of a conduction electron spin resonance in AlB2 and are discussed in comparison with other boride compounds. Based on our main findings for AlB2 and the calculated electronic structure of similar layered honeycomb-like structures, we conclude that any array of covalent B-B layers potentially results in a conduction electron spin resonance signal. This observation may shed new light on the nature of the non-trivial conduction electron spin resonance-like signals of complex f-electron systems such as beta-YbAlB4. (AU) | |
| FAPESP's process: | 11/01564-0 - Materials sciences on complex and advanced systems |
| Grantee: | Pascoal Jose Giglio Pagliuso |
| Support Opportunities: | Scholarships abroad - Research |
| FAPESP's process: | 12/05903-6 - Nuclear magnetic resonance of novel complex and advanced materials in condensed matter physics |
| Grantee: | Ricardo Rodrigues Urbano |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 06/60440-0 - Study of strongly correlated systems in extreme conditions |
| Grantee: | Carlos Rettori |
| Support Opportunities: | Research Projects - Thematic Grants |