Electrodynamics of the antiferromagnetic phase in
Abstract
Here, we present data on the optical conductivity of URu2-x(Fe,Os)xSi2. While the parent material URu2Si2 enters the enigmatic hidden order (HO) phase below 17.5 K, an antiferromagnetic (AFM) phase is induced by the substitution of Fe or Os onto the Ru sites. We find that both the HO and the AFM phases exhibit an identical gap structure that is characterized by a loss of conductivity below the gap energy with spectral weight transferred to a narrow frequency region just above the gap, the typical optical signature of a density wave. The AFM phase is marked by strong increases in both transition temperature and the energy of the gap associated with the transition. In the normal phase just above the transition the optical scattering rate varies as ω2. We find that in both the HO and the AFM phases, our data are consistent with elastic resonant scattering of a Fermi liquid. This indicates that the appearance of a coherent state is a necessary condition for either ordered phase to emerge. Our measurements favor models in which the HO and the AFM phases are driven by the common physics of a nesting-induced density wave gap.
- Authors:
-
- McMaster Univ., Hamilton, ON (Canada)
- McMaster Univ., Hamilton, ON (Canada); Canadian Inst. for Advanced Research, Toronto, ON (Canada)
- Univ. of California, San Diego, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of California, San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1418611
- Alternate Identifier(s):
- OSTI ID: 1225409
- Grant/Contract Number:
- FG02-04ER46105; DMR-1206553
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 19; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Hall, Jesse S., Movassagh, M. Rahimi, Wilson, M. N., Luke, G. M., Kanchanavatee, N., Huang, K., Janoschek, M., Maple, M. B., and Timusk, T. Electrodynamics of the antiferromagnetic phase in URu2Si2. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.92.195111.
Hall, Jesse S., Movassagh, M. Rahimi, Wilson, M. N., Luke, G. M., Kanchanavatee, N., Huang, K., Janoschek, M., Maple, M. B., & Timusk, T. Electrodynamics of the antiferromagnetic phase in URu2Si2. United States. https://doi.org/10.1103/PhysRevB.92.195111
Hall, Jesse S., Movassagh, M. Rahimi, Wilson, M. N., Luke, G. M., Kanchanavatee, N., Huang, K., Janoschek, M., Maple, M. B., and Timusk, T. Fri .
"Electrodynamics of the antiferromagnetic phase in URu2Si2". United States. https://doi.org/10.1103/PhysRevB.92.195111. https://www.osti.gov/servlets/purl/1418611.
@article{osti_1418611,
title = {Electrodynamics of the antiferromagnetic phase in URu2Si2},
author = {Hall, Jesse S. and Movassagh, M. Rahimi and Wilson, M. N. and Luke, G. M. and Kanchanavatee, N. and Huang, K. and Janoschek, M. and Maple, M. B. and Timusk, T.},
abstractNote = {Here, we present data on the optical conductivity of URu2-x(Fe,Os)xSi2. While the parent material URu2Si2 enters the enigmatic hidden order (HO) phase below 17.5 K, an antiferromagnetic (AFM) phase is induced by the substitution of Fe or Os onto the Ru sites. We find that both the HO and the AFM phases exhibit an identical gap structure that is characterized by a loss of conductivity below the gap energy with spectral weight transferred to a narrow frequency region just above the gap, the typical optical signature of a density wave. The AFM phase is marked by strong increases in both transition temperature and the energy of the gap associated with the transition. In the normal phase just above the transition the optical scattering rate varies as ω2. We find that in both the HO and the AFM phases, our data are consistent with elastic resonant scattering of a Fermi liquid. This indicates that the appearance of a coherent state is a necessary condition for either ordered phase to emerge. Our measurements favor models in which the HO and the AFM phases are driven by the common physics of a nesting-induced density wave gap.},
doi = {10.1103/PhysRevB.92.195111},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 19,
volume = 92,
place = {United States},
year = {Fri Nov 06 00:00:00 EST 2015},
month = {Fri Nov 06 00:00:00 EST 2015}
}
Web of Science
Figures / Tables:
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