14:45 - 16:20
Room: Room1
Oral presentation
Chair/s:
Nava Setter
First-principles theory of domain wall dynamics in improper ferroelectric hexagonal manganites
Sergey Artyukhin 1, Urko Petralanda 1, Sang-Wook Cheong 2, Keji Lai 3
1 Italian Institute of Technology, Genova, Italy
2 Rutgers University, Piscataway NJ, United States
3 UT Austin, Austin TX, United States

Electric field-driven dynamics of ferroelectrics and multiferroics is at the heart of their applications. While loss at GHz frequencies was seen in bulk ferroelectrics, the unambigous assignment of its origin was problematic until the recent spatially resolved measurements pinpointed that the loss is localized at domain walls [1]. We use phenomenological theory and first-principles calculations to model domainwall localized excitations and interpret recent scanning impedance microscopy measurements in hexagonal manganites and proper ferroelectrics as excitation of these localized vibrations.

References

[1] Xiaoyu Wu, Urko Petralanda, Lu Zheng, Yuan Ren, Rongwei Hu, Sang-Wook Cheong, Sergey Artyukhin, Keji Lai, Science Advances (accepted), arxiv:1702.06205


Reference:
Tu-S24-O-01
Presenter/s:
Sergey Artyukhin
Presentation type:
Oral communication
Room:
Room1
Chair/s:
Nava Setter
Date:
Tuesday, September 5th, 2017
Time:
14:45 - 15:00
Session times:
14:45 - 16:20