Nonvolatile optical control of interlayer stacking order in 1T-TaS2
Abstrak
Abstract Nonvolatile optical manipulation of material properties on demand is a highly sought-after feature in the advancement of future optoelectronic applications. Here, we unravel the nature of the single-laser-pulse induced hidden state in 1T-TaS2 by systematically investigating the electronic structure evolution and the pulse-pair control throughout the reversible transition cycle. Our data indicate a mixed-stacking state involving two similarly low-energy interlayer orders, which is manifested as the charge density wave phase disruption. Furthermore, we elucidate distinct mechanisms underlying the bidirectional transformations — the ultrafast formation of the hidden state is initiated by a coherent phonon which triggers a competition between interlayer stacking orders, while its recovery is governed by the progressive domain evolution. Our work highlights the deterministic role of the competing interlayer orders in the nonvolatile phase transition in 1T-TaS2, establishing all-optical engineering of stacking orders in low-dimensional materials as a viable strategy for achieving desirable nonvolatile electronic devices.
Topik & Kata Kunci
Penulis (22)
Junde Liu
Pei Liu
Liu Yang
Sung-Hoon Lee
Mojun Pan
Famin Chen
Jierui Huang
Bei Jiang
Mingzhe Hu
Yuchong Zhang
Zhaoyang Xie
Gang Wang
Mengxue Guan
Wei Jiang
Huaixin Yang
Jianqi Li
Chenxia Yun
Zhiwei Wang
Sheng Meng
Yugui Yao
Tian Qian
Xun Shi
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.1038/s41535-025-00836-6
- Akses
- Open Access ✓