| Lattice dynamics, optical and thermal properties of quasi-two-dimensional anisotropic layered semimetal ZrTe2 | |
| Muhammad, Zahir1,2; Usman, Muhammad2; Ullah, Sami3; Zhang, Bo4; Lu, Qixiao2; Zhu, Ling2; Hu, Rui2 | |
| Corresponding Author | Zhu, Ling(zhuling@szu.edu.cn) ; Hu, Rui(rhu@szu.edu.cn) |
| 2021-06-24 | |
| Source Publication | INORGANIC CHEMISTRY FRONTIERS
 |
| ISSN | 2052-1553 |
| Pages | 8 |
| Abstract | In this study, an investigation was conducted on the vibrational properties of 2D layered zirconium ditelluride by employing Raman spectroscopy. In addition, the surface electronic and optical properties of bulk ZrTe2 were studied by infrared spectroscopy. Two Raman-active modes were observed at 109.3 cm(-1) (E-g) and 145.2 cm(-1) (A(1g)) in ZrTe2, respectively, as compared with the DFT calculations. Next, the Raman modes were studied in depth from the bulk to bilayer over a range of temperatures. A(1g) and E-g soften with the increasing temperature from 80 to 300 K. Moreover, the softening of both vibrational modes was observed to show a strong association with the anharmonic interlayer phonon coupling or thermal expansion at different temperatures; hence, the phonon frequencies could be shifted. However, a blue shift was observed with the decrease in the number of layers, which are connected to the interlayer interaction, or the structural mismatch in layers compared with their bulk counterpart. Angle-resolved Raman spectroscopy revealed the anisotropic properties of ZrTe2. Similarly, the optical properties exhibited by ZrTe2 suggested the co-existence of two types of charge carriers along with bound excitons in the infrared regime. Besides, the Hall measurements indicates the dominant electron-type carriers and high mobility at low temperatures in ZrTe2. Furthermore, the calculated thermal conductivity of similar to 5.4 W m(-1) K-1 at ambient temperature showed ZrTe2 as a prominent candidate for thermoelectric devices. Accordingly, as revealed from the obtained results, ZrTe2 with different layers could be useful in spintronic and tunable thermoelectric devices. |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Shenzhen Basic Research Project ; Shenzhen Science and Technology Innovation Foundation ; Guangdong Natural Science Foundation ; Shenzhen University fund |
| DOI | 10.1039/d1qi00553g |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2018YFC0910602] ; National Natural Science Foundation of China[61775145] ; National Natural Science Foundation of China[61525503] ; National Natural Science Foundation of China[61620106016] ; National Natural Science Foundation of China[61835009] ; National Natural Science Foundation of China[81727804] ; National Natural Science Foundation of China[61722508] ; Shenzhen Basic Research Project[JCYJ20190808123401666] ; Shenzhen Basic Research Project[JCYJ20170412110212234] ; Shenzhen Basic Research Project[JCYJ20170412105003520] ; Shenzhen Basic Research Project[2019A1515011762] ; Shenzhen Science and Technology Innovation Foundation[JCYJ20180305125302333] ; Shenzhen Science and Technology Innovation Foundation[JCYJ20170818093035338] ; Shenzhen Science and Technology Innovation Foundation[JCYJ20180305125430954] ; Guangdong Natural Science Foundation[2019A1515011762] ; Shenzhen University fund[860-000002110229] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Inorganic & Nuclear |
| WOS ID | WOS:000673656400001 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159782 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhu, Ling; Hu, Rui |
| Affiliation | 1.Beihang Univ, Sch Microelect, Hefei Innovat Res Inst, Hefei 230013, Peoples R China 2.Shenzhen Univ, Coll Phys Optoelect Engn, Minist Educ Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China |
| Recommended Citation GB/T 7714 | Muhammad, Zahir,Usman, Muhammad,Ullah, Sami,et al. Lattice dynamics, optical and thermal properties of quasi-two-dimensional anisotropic layered semimetal ZrTe2[J]. INORGANIC CHEMISTRY FRONTIERS,2021:8. |
| APA | Muhammad, Zahir.,Usman, Muhammad.,Ullah, Sami.,Zhang, Bo.,Lu, Qixiao.,...&Hu, Rui.(2021).Lattice dynamics, optical and thermal properties of quasi-two-dimensional anisotropic layered semimetal ZrTe2.INORGANIC CHEMISTRY FRONTIERS,8. |
| MLA | Muhammad, Zahir,et al."Lattice dynamics, optical and thermal properties of quasi-two-dimensional anisotropic layered semimetal ZrTe2".INORGANIC CHEMISTRY FRONTIERS (2021):8. |
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