The Library
Terahertz spectra revealing the collective excitation mode in charge-density-wave single crystal LuFe2 O4
Tools
Liu, Xiumei, Jin, Zuanming, Cheng, Zhenxiang, Lin, Xian, Balakrishnan, Geetha and Ma, Guohong (2017) Terahertz spectra revealing the collective excitation mode in charge-density-wave single crystal LuFe2 O4. physica status solidi (RRL) - Rapid Research Letters, 11 (9). 1700177. doi:10.1002/pssr.201700177 ISSN 1862-6254.
|
PDF
WRAP-Terahertz-spectra-Balakrishnan-2017.pdf - Accepted Version - Requires a PDF viewer. Download (2106Kb) | Preview |
Official URL: http://dx.doi.org/10.1002/pssr.201700177
Abstract
We report a low-energy collective excitation mode in charge-ordered multiferroic LuFe2O4 via terahertz time domain spectroscopy. Upon cooling from 300 K to 40 K, the central resonance frequency showed a pronounced hardening from 0.85 THz to 1.15 THz. In analogy to the well-known low-energy optical properties of LuFe2O4, we attributed this emerging resonance to the charge-density-wave (CDW) collective excitations. By using the Drude-Lorentz model fitting, we observe the CDW col-lective mode becomes increasingly damped with increasing the temperature. Furthermore, we analyze the kinks of the CDW collective mode at the magnetic transition temperature, which indicates the coupling of spin order with electric polarization.
Item Type: | Journal Article | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||
Journal or Publication Title: | physica status solidi (RRL) - Rapid Research Letters | ||||||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||||||
ISSN: | 1862-6254 | ||||||||||
Official Date: | 11 September 2017 | ||||||||||
Dates: |
|
||||||||||
Volume: | 11 | ||||||||||
Number: | 9 | ||||||||||
Number of Pages: | 6 | ||||||||||
Article Number: | 1700177 | ||||||||||
DOI: | 10.1002/pssr.201700177 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||
Copyright Holders: | WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim | ||||||||||
Date of first compliant deposit: | 17 October 2017 | ||||||||||
Date of first compliant Open Access: | 15 August 2018 | ||||||||||
Funder: | EPSRC | ||||||||||
Grant number: | EP/M028771/1. |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year