Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn5

Published

Author(s)

C. Stock, Jose Rodriguez Rivera, Karin Schmalzl, E. E. Rodriguez, A. Stunault, C. Petrovic

Abstract

CeRhIn5 is an itinerant magnet where the Ce3+ spins order in a simple spiral phase caused by competing exchange interactions. We investigate the spin excitations and observe sharp spin- waves parameterized by a nearest neighbor exchange JRKKY =0.88 ±0.05 meV. At higher energies, the spin fluctuations are heavily damped where single quasiparticle states decay into a continuum constrained by kinematics of energy and momentum conservation. CeRhIn5 represents a case where competing interactions results in a breakdown of a single quasiparticle picture for the excitations.
Citation
Physical Review Letters
Volume
114
Issue
24

Keywords

Neutron Scattering, Heavy fermions, magnetic materials

Citation

Stock, C. , Rodriguez Rivera, J. , Schmalzl, K. , Rodriguez, E. , Stunault, A. and Petrovic, C. (2015), Single to Multiquasiparticle Excitations in the Itinerant Helical Magnet CeRhIn<sub>5</sub>, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918516 (Accessed April 23, 2024)
Created June 18, 2015, Updated October 12, 2021