Optical spectroscopic investigation on the coupling of electronic and magnetic structure in multiferroic hexagonal RMnO(3) (R = Gd, Tb, Dy, and Ho) thin films
- Authors
- Choi, Woo Seok; Moon, Soon Jae; Seo, Sung Seok A.; Lee, Daesu; Lee, Jung Hyuk; Murugavel, Pattukkannu; Noh, Tae Won; Lee, Yun Sang
- Issue Date
- Aug-2008
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW B, v.78, no.5
- Journal Title
- PHYSICAL REVIEW B
- Volume
- 78
- Number
- 5
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/16823
- DOI
- 10.1103/PhysRevB.78.054440
- ISSN
- 1098-0121
- Abstract
- We investigated the effects of temperature and magnetic field on the electronic structure of hexagonal RMnO(3) (R = Gd, Tb, Dy, and Ho) thin films using optical spectroscopy. As the magnetic ordering of the system was disturbed, a systematic change in the electronic structure was identified in this series. The optical-absorption peak near 1.7 eV showed an unexpectedly large shift of more than 150 meV from 300 to 15 K, accompanied by an anomaly of the shift at the Neel temperature. The magnetic-field dependent measurement clearly revealed a sizable shift of the corresponding peak when a high magnetic field was applied. Our findings indicated strong coupling between the magnetic ordering and the electronic structure in the multiferroic hexagonal RMnO(3) compounds.
- Files in This Item
-
Go to Link
- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/16823)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.