| Full text | |
| Author(s): |
Lesseux, G. G.
[1]
;
Sakai, H.
[2]
;
Hattori, T.
[2]
;
Tokunaga, Y.
[2]
;
Kambe, S.
[2]
;
Kuhns, P. L.
[3]
;
Reyes, A. P.
[3]
;
Thompson, J. D.
[4]
;
Pagliuso, P. G.
[1]
;
Urbano, R. R.
[1]
Total Authors: 10
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195 - Japan
[3] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 - USA
[4] Los Alamos Natl Lab, Los Alamos, NM 87545 - USA
Total Affiliations: 4
|
| Document type: | Journal article |
| Source: | Physical Review B; v. 101, n. 16 APR 10 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
CeRhIn5 is a Kondo-lattice prototype in which a magnetic field B{*} similar or equal to 31 T induces an abrupt Fermi-surface (FS) reconstruction and pronounced in-plane electrical transport anisotropy all within its antiferromagnetic state. Though the antiferromagnetic order at zero field is well understood, the origin of an emergent state at B{*} remains unknown due to challenges inherent to probing states microscopically at high fields. Here we report low-temperature nuclear magnetic resonance (NMR) measurements revealing a pronounced decrease in the In-115 formal Knight shift, without changes in crystal or magnetic structures, of CeRhIn5 at fields (parallel to c) spanning B{*}. We discuss the emergent state above B{*} in terms of a change in Ce's 4f orbitals that arises from field-induced evolution of crystal-electric field (CEF) energy levels. This change in orbital character enhances hybridization between the 4f and the conduction electrons that leads ultimately to an itinerant quantum-critical point at B-c0 similar or equal to 50 T. (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: | 12/04870-7 - Studies of novel complex and advanced materials |
| Grantee: | Pascoal Jose Giglio Pagliuso |
| Support type: | Research Projects - Thematic Grants |
| FAPESP's process: | 12/05903-6 - Nuclear magnetic resonance of novel complex and advanced materials in condensed matter physics |
| Grantee: | Ricardo Rodrigues Urbano |
| Support type: | Research Grants - Young Investigators Grants |