IMR OpenIR
Double resonance Raman modes in monolayer and few-layer MoTe2
Guo, Huaihong; Yang, Teng; Yamamoto, Mahito; Zhou, Lin; Ishikawa, Ryo; Ueno, Keiji; Tsukagoshi, Kazuhito; Zhang, Zhidong; Dresselhaus, Mildred S.; Saito, Riichiro; hhguo@alum.imr.ac.cn; yangteng@imr.ac.cn
2015
Source PublicationPHYSICAL REVIEW B
ISSN1098-0121
Volume91Issue:20Pages:-
AbstractWe study the second-order Raman process of mono- and few-layer MoTe2, by combining ab initio density functional perturbation calculations with experimental Raman spectroscopy using 532, 633, and 785 nm excitation lasers. The calculated electronic band structure and the density of states show that the resonance Raman process occurs at the M point in the Brillouin zone, where a strong optical absorption occurs due to a logarithmic Van Hove singularity of the electronic density of states. The double resonance Raman process with intervalley electron-phonon coupling connects two of the three inequivalent M points in the Brillouin zone, giving rise to second-order Raman peaks due to the M-point phonons. The calculated vibrational frequencies of the second-order Raman spectra agree with the observed laser-energy-dependent Raman shifts in the experiment.
description.department[guo, huaihong ; yang, teng ; saito, riichiro] tohoku univ, dept phys, sendai, miyagi 9808578, japan ; [yang, teng ; zhang, zhidong] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [yamamoto, mahito ; tsukagoshi, kazuhito] natl inst mat sci, wpi mana, int ctr mat nanoarchitecton, tsukuba, ibaraki 3050044, japan ; [zhou, lin ; dresselhaus, mildred s.] mit, dept elect engn & comp engn, cambridge, ma 02139 usa ; [ishikawa, ryo] saitama univ, grad sch sci & engn, dept funct mat sci, saitama 3388570, japan ; [ueno, keiji] saitama univ, grad sch sci & engn, dept chem, saitama 3388570, japan ; [dresselhaus, mildred s.] mit, dept phys, cambridge, ma 02139 usa
Funding OrganizationNSFC [51331006]; Key Research Program of Chinese Academy of Sciences [KGZD-EW-T06]; MEXT [25286005, 25107005, 25107004]; NSF-DMR [1004147]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74729
Collection中国科学院金属研究所
Corresponding Authorhhguo@alum.imr.ac.cn; yangteng@imr.ac.cn
Recommended Citation
GB/T 7714
Guo, Huaihong,Yang, Teng,Yamamoto, Mahito,et al. Double resonance Raman modes in monolayer and few-layer MoTe2[J]. PHYSICAL REVIEW B,2015,91(20):-.
APA Guo, Huaihong.,Yang, Teng.,Yamamoto, Mahito.,Zhou, Lin.,Ishikawa, Ryo.,...&yangteng@imr.ac.cn.(2015).Double resonance Raman modes in monolayer and few-layer MoTe2.PHYSICAL REVIEW B,91(20),-.
MLA Guo, Huaihong,et al."Double resonance Raman modes in monolayer and few-layer MoTe2".PHYSICAL REVIEW B 91.20(2015):-.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Guo, Huaihong]'s Articles
[Yang, Teng]'s Articles
[Yamamoto, Mahito]'s Articles
Baidu academic
Similar articles in Baidu academic
[Guo, Huaihong]'s Articles
[Yang, Teng]'s Articles
[Yamamoto, Mahito]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Guo, Huaihong]'s Articles
[Yang, Teng]'s Articles
[Yamamoto, Mahito]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.