Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by La139 NMR

Rana, K.; Kotegawa, H.; Ullah, R. R.; Harvey, J. S.; Bud'ko, S. L.; Canfield, P. C.; Tou, H.; Taufour, V.; Furukawa, Y.

doi:10.1103/PhysRevB.99.214417

Title: Magnetic fluctuations in the itinerant ferromagnet ${LaCrGe}_{3}$ studied by ${}^{139}{La}$ NMR

Journal Article · 10 June 2019 · Physical Review B

DOI: https://doi.org/10.1103/PhysRevB.99.214417 · OSTI ID:1526273

Rana, K. ^[1]; Kotegawa, H. ^[2]; Ullah, R. R. ^[3]; Harvey, J. S. ^[3]; Bud'ko, S. L. ^[1]; Canfield, P. C. ^[1]; Tou, H. ^[2]; Taufour, V. ^[3]; Furukawa, Y. ^[1]

Ames Lab. and Iowa State Univ., Ames, IA (United States)
Kobe Univ. (Japan)
Univ. of California, Davis, CA (United States)

${LaCrGe}_{3}$ is an itinerant ferromagnet with a Curie temperature of T_C = 85 K and exhibits an avoided ferromagnetic quantum critical point under pressure through a modulated antiferromagnetic phase as well as tricritical wing structure in its temperature-pressure-magnetic field (T – p – H) phase diagram. In order to understand the static and dynamical magnetic properties of ${LaCrGe}_{3}$ , we carried out ${}^{139}{La}$ nuclear magnetic resonance (NMR) measurements. Based on the analysis of NMR data, using the self-consistent-renormalization (SCR) theory, the spin fluctuations in the paramagnetic state are revealed to be isotropic ferromagnetic and three dimensional (3D) in nature. Furthermore, the system is found to follow the generalized Rhodes-Wohlfarth relation which is expected in 3D itinerant ferromagnetic systems. As compared to other similar itinerant ferromagnets, the Cr 3_d electrons and their spin fluctuations are characterized to have a relatively high degree of localization in real space.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE

Grant/Contract Number:: AC02-07CH11358; JP15H05882; JP15H05885; JP15K21732; JP18H04321 (J-Physics)

OSTI ID:: 1526273

Alternate ID(s):: OSTI ID: 1546298

Report Number(s):: IS-J-9956; PRBMDO

Journal Information:: Physical Review B, Vol. 99, Issue 21; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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