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Title: Magnetic fluctuations in the itinerant ferromagnet LaCrGe 3 studied by La 139 NMR

Abstract

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 La 139 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.

Authors:
 [1];  [2];  [3];  [3];  [1];  [1];  [2];  [3];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Kobe Univ. (Japan)
  3. Univ. of California, Davis, CA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE
OSTI Identifier:
1526273
Alternate Identifier(s):
OSTI ID: 1546298
Report Number(s):
[IS-J-9956]
[Journal ID: ISSN 2469-9950; PRBMDO]
Grant/Contract Number:  
[AC02-07CH11358; JP15H05882; JP15H05885; JP15K21732; JP18H04321 (J-Physics)]
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
[ Journal Volume: 99; Journal Issue: 21]; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Rana, K., Kotegawa, H., Ullah, R. R., Harvey, J. S., Bud'ko, S. L., Canfield, P. C., Tou, H., Taufour, V., and Furukawa, Y. Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by La139 NMR. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.214417.
Rana, K., Kotegawa, H., Ullah, R. R., Harvey, J. S., Bud'ko, S. L., Canfield, P. C., Tou, H., Taufour, V., & Furukawa, Y. Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by La139 NMR. United States. doi:10.1103/PhysRevB.99.214417.
Rana, K., Kotegawa, H., Ullah, R. R., Harvey, J. S., Bud'ko, S. L., Canfield, P. C., Tou, H., Taufour, V., and Furukawa, Y. Mon . "Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by La139 NMR". United States. doi:10.1103/PhysRevB.99.214417.
@article{osti_1526273,
title = {Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by La139 NMR},
author = {Rana, K. and Kotegawa, H. and Ullah, R. R. and Harvey, J. S. and Bud'ko, S. L. and Canfield, P. C. and Tou, H. and Taufour, V. and Furukawa, Y.},
abstractNote = {LaCrGe3 is an itinerant ferromagnet with a Curie temperature of TC = 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 LaCrGe3, we carried out La139 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 3d electrons and their spin fluctuations are characterized to have a relatively high degree of localization in real space.},
doi = {10.1103/PhysRevB.99.214417},
journal = {Physical Review B},
number = [21],
volume = [99],
place = {United States},
year = {2019},
month = {6}
}

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