Persistent Photogenerated State Attained by Femtosecond Laser Irradiation of Thin T-d-MoTe2

doi:10.1021/acs.jpcc.2c03987

	Persistent Photogenerated State Attained by Femtosecond Laser Irradiation of Thin T-d-MoTe2
	Cheng, Meixin 7,8; Zhong, Shazhou 5,6; Rivas, Nicolas 4,7,8; Dekker, Tina 5,6; Petruk, Ariel Alcides 7,8; Gicala, Patrick 7,8; Pichugin, Kostyantyn 7,8; Chen, Fangchu 5,6; Luo, Xuan 3; Sun, Yuping 1,2
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2022-08-05
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.2c03987
通讯作者	Sciaini, German(gsciaini@uwaterloo.ca)
英文摘要	Laser excitation has emerged as a means to expose hidden states of matter and promote phase transitions on demand. Such laser-induced trans-formations are often rendered possible owing to the delivery of spatially and/or temporally manipulated light, carrying energy quanta well above the thermal background. Here, we report time-resolved broadband femtosecond (fs) transient absorption measurements on thin flakes of the Weyl semimetal candidate Td- MoTe2 subjected to various levels and schemes of fs-photoexcitation. Our results reveal that impulsive fs-laser irradiation alters the interlayer behavior of the low temperature Td phase as evidenced by the persistent disappearance of its characteristic coherent 1A1 asymptotic to 13 cm(-1) shear phonon mode. We found that this structural transformation is likely related to lattice strain formation, withstands thermal cycling, and can be reverted to the 1T & PRIME; phase by fs-laser treatment at room temperature. Since interlayer shear strain was encountered to lead to a topologically distinct phase in an analogous compound, our work opens the door to the reversible optical control of electronic properties in this class of materials.
资助项目	U.S. Army Research Office[W911NF-21-2-0136] ; National Science and Engineering Research Council of Canada ; Ontario Early Researcher Award program ; Canada Foundation for Innovation (CFI) ; Canada Research Chair (CRC) program ; Canada First Research Excellence Fund (CFREF) ; National Key Research and Development Program[2021YFA1600201] ; National Nature Science Foundation of China[11674326] ; National Nature Science Foundation of China[11874357] ; National Natural Science Foundation of China[U1832141] ; National Natural Science Foundation of China[U1932217] ; Chinese Academy of Sciences' Large-Scale Scientific Facility[U1832141] ; Chinese Academy of Sciences' Large-Scale Scientific Facility[U1932217]
WOS关键词	COHERENT PHONON OSCILLATIONS ; THZ PHONONS ; PHASE ; TRANSITION ; CONTACT ; MOTIONS ; DRIVEN ; MOTE2 ; MODES
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000839452100001
资助机构	U.S. Army Research Office ; National Science and Engineering Research Council of Canada ; Ontario Early Researcher Award program ; Canada Foundation for Innovation (CFI) ; Canada Research Chair (CRC) program ; Canada First Research Excellence Fund (CFREF) ; National Key Research and Development Program ; National Nature Science Foundation of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences' Large-Scale Scientific Facility
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/132027]
专题	中国科学院合肥物质科学研究院
通讯作者	Sciaini, German
作者单位	1.Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China 2.Chinese Acad Sci, High Magnet Field Lab, HFIPS, Hefei 230031, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 4.McMaster Univ, Nucl Engn Grp, Hamilton, ON L8S 4K1, Canada 5.Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada 6.Univ Waterloo, Inst Quantum Comp, Dept Phys & Astron, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada 7.Univ Waterloo, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada 8.Univ Waterloo, Dept Chem, Ultrafast Electron Imaging Lab, Waterloo, ON N2L 3G1, Canada
推荐引用方式 GB/T 7714	Cheng, Meixin,Zhong, Shazhou,Rivas, Nicolas,et al. Persistent Photogenerated State Attained by Femtosecond Laser Irradiation of Thin T-d-MoTe2[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2022.
APA	Cheng, Meixin.,Zhong, Shazhou.,Rivas, Nicolas.,Dekker, Tina.,Petruk, Ariel Alcides.,...&Sciaini, German.(2022).Persistent Photogenerated State Attained by Femtosecond Laser Irradiation of Thin T-d-MoTe2.JOURNAL OF PHYSICAL CHEMISTRY C.
MLA	Cheng, Meixin,et al."Persistent Photogenerated State Attained by Femtosecond Laser Irradiation of Thin T-d-MoTe2".JOURNAL OF PHYSICAL CHEMISTRY C (2022).