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Title: Spin phases of the helimagnetic insulator Cu 2 OSeO 3 probed by magnon heat conduction

Abstract

We report studies of thermal conductivity as functions of magnetic field and temperature in the helimagnetic insulator Cu2OSeO3 that reveal novel features of the spin-phase transitions as probed by magnon heat conduction. The tilted conical spiral and low-temperature skyrmion phases, recently identified in small-angle neutron scattering studies, are clearly identified by sharp signatures in the magnon thermal conductivity.Magnon scattering associated with the presence of domain boundaries in the tilted conical phase and regions of skyrmion and conical-phase coexistence are identified.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Institute for Quantum Matter (IQM); Univ. of Miami, Miami, FL (United States); Johns Hopkins Univ., Baltimore, MD (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1566684
DOE Contract Number:  
SC0008607; SC0019331
Resource Type:
Journal Article
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 2; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
optics, thermal conductivity, defects, charge transport, superconductivity, magnetism and spin physics, quantum information science, materials and chemistry by design, synthesis (novel materials)

Citation Formats

Prasai, N., Akopyan, A., Trump, B. A., Marcus, G. G., Huang, S. X., McQueen, T. M., and Cohn, J. L. Spin phases of the helimagnetic insulator Cu2OSeO3 probed by magnon heat conduction. United States: N. p., 2019. Web. doi:10.1103/physrevb.99.020403.
Prasai, N., Akopyan, A., Trump, B. A., Marcus, G. G., Huang, S. X., McQueen, T. M., & Cohn, J. L. Spin phases of the helimagnetic insulator Cu2OSeO3 probed by magnon heat conduction. United States. doi:10.1103/physrevb.99.020403.
Prasai, N., Akopyan, A., Trump, B. A., Marcus, G. G., Huang, S. X., McQueen, T. M., and Cohn, J. L. Tue . "Spin phases of the helimagnetic insulator Cu2OSeO3 probed by magnon heat conduction". United States. doi:10.1103/physrevb.99.020403.
@article{osti_1566684,
title = {Spin phases of the helimagnetic insulator Cu2OSeO3 probed by magnon heat conduction},
author = {Prasai, N. and Akopyan, A. and Trump, B. A. and Marcus, G. G. and Huang, S. X. and McQueen, T. M. and Cohn, J. L.},
abstractNote = {We report studies of thermal conductivity as functions of magnetic field and temperature in the helimagnetic insulator Cu2OSeO3 that reveal novel features of the spin-phase transitions as probed by magnon heat conduction. The tilted conical spiral and low-temperature skyrmion phases, recently identified in small-angle neutron scattering studies, are clearly identified by sharp signatures in the magnon thermal conductivity.Magnon scattering associated with the presence of domain boundaries in the tilted conical phase and regions of skyrmion and conical-phase coexistence are identified.},
doi = {10.1103/physrevb.99.020403},
journal = {Physical Review B},
issn = {2469-9950},
number = 2,
volume = 99,
place = {United States},
year = {2019},
month = {1}
}

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