Publication Date

6-10-2019

Department

Ames Laboratory; Physics and Astronomy

Campus Units

Ames Laboratory, Physics and Astronomy

OSTI ID+

1526273

Report Number

IS-J 9956

DOI

10.1103/PhysRevB.99.214417

Journal Title

Physical Review B

Volume Number

99

Issue Number

21

First Page

214417

Abstract

LaCrGe3 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 LaCrGe3 , 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.

DOE Contract Number(s)

AC02-07CH11358; JP15H05882; JP15H05885; JP15K21732; JP18H04321 (J-Physics)

Language

en

Publisher

Iowa State University Digital Repository, Ames IA (United States)

Share

COinS