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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Orbitally defined field-induced electronic state in a Kondo lattice

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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
[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

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