Electronic structure of monolayer 1T'-MoTe2 grown by molecular beam epitaxy

Tang, Shujie; Zhang, Chaofan; Jia, Chunjing; Ryu, Hyejin; Hwang, Choongyu; Hashimoto, Makoto; Lu, Donghui; Liu, Zhi; Devereaux, Thomas P.; Shen, Zhi -Xun; Mo, Sung -Kwan

doi:10.1063/1.5004700

Electronic structure of monolayer 1T'-MoTe₂ grown by molecular beam epitaxy

Journal Article · Mon Nov 13 23:00:00 EST 2017 · APL Materials

DOI:https://doi.org/10.1063/1.5004700· OSTI ID:1435115

Tang, Shujie ^[1]; Zhang, Chaofan ^[2]; Jia, Chunjing ^[3]; Ryu, Hyejin ^[4]; ^[5]; Hashimoto, Makoto ^[6]; Lu, Donghui ^[6]; Liu, Zhi ^[7]; Devereaux, Thomas P. ^[3]; Shen, Zhi -Xun ^[3]; ^[8]

SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Chinese Academy of Sciences, Shanghai (China); Shanghai Tech Univ., Shanghai (China)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States); National Univ. of Defense Technology, Changsha (China)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Max Planck-POSTECH/Hsinch Center for Complex Phase Materials, Gyeongbuk (South Korea)
Pusan National Univ., Busan (South Korea)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Chinese Academy of Sciences, Shanghai (China); Shanghai Tech Univ., Shanghai (China)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Monolayer transition metal dichalcogenides (TMDCs) in the 1T' structural phase have drawn a great deal of attention due to the prediction of quantum spin Hall insulator states. The band inversion and the concomitant changes in the band topology induced by the structural distortion from 1T to 1T' phases are well established. However, the bandgap opening due to the strong spin-orbit coupling (SOC) is only verified for 1T'-WTe₂ recently and still debated for other TMDCs. Here we report a successful growth of high-quality monolayer 1T'-MoTe₂ on a bilayer graphene substrate through molecular beam epitaxy. Using in situ angle-resolved photoemission spectroscopy (ARPES), we have investigated the low-energy electronic structure and Fermi surface topology. The SOC-induced breaking of the band degeneracy points between the valence and conduction bands is clearly observed by ARPES. However, the strength of SOC is found to be insufficient to open a bandgap, which makes monolayer 1T'-MoTe₂ on bilayer graphene a semimetal.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1435115

Alternate ID(s):: OSTI ID: 1421017
OSTI ID: 1437578

Journal Information:: APL Materials, Journal Name: APL Materials Journal Issue: 2 Vol. 6; ISSN 2166-532X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (39)

Monolayer Single-Crystal 1T′-MoTe ₂ Grown by Chemical Vapor Deposition Exhibits Weak Antilocalization Effect Naylor, Carl H.; Parkin, William M.; Ping, Jinglei Nano Letters, Vol. 16, Issue 7 https://doi.org/10.1021/acs.nanolett.6b01342	journal	June 2016
Universal Mechanism of Band-Gap Engineering in Transition-Metal Dichalcogenides Kang, Mingu; Kim, Beomyoung; Ryu, Sae Hee Nano Letters, Vol. 17, Issue 3 https://doi.org/10.1021/acs.nanolett.6b04775	journal	February 2017
Strain-Induced Indirect to Direct Bandgap Transition in Multilayer WSe ₂ Desai, Sujay B.; Seol, Gyungseon; Kang, Jeong Seuk Nano Letters, Vol. 14, Issue 8 https://doi.org/10.1021/nl501638a	journal	July 2014
Emerging Photoluminescence in Monolayer MoS₂ Splendiani, Andrea; Sun, Liang; Zhang, Yuanbo Nano Letters, Vol. 10, Issue 4, p. 1271-1275 https://doi.org/10.1021/nl903868w	journal	April 2010
Large, non-saturating magnetoresistance in WTe2 Ali, Mazhar N.; Xiong, Jun; Flynn, Steven Nature, Vol. 514, Issue 7521 https://doi.org/10.1038/nature13763	journal	September 2014
Signature of type-II Weyl semimetal phase in MoTe2 Jiang, J.; Liu, Z. K.; Sun, Y. Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/ncomms13973	journal	January 2017
Control of valley polarization in monolayer MoS2 by optical helicity Mak, Kin Fai; He, Keliang; Shan, Jie Nature Nanotechnology, Vol. 7, Issue 8 https://doi.org/10.1038/nnano.2012.96	journal	June 2012
Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe2 Zhang, Yi; Chang, Tay-Rong; Zhou, Bo Nature Nanotechnology, Vol. 9, Issue 2 https://doi.org/10.1038/nnano.2013.277	journal	December 2013
Fully gapped topological surface states in Bi2Se3 films induced by a d-wave high-temperature superconductor Wang, Eryin; Ding, Hao; Fedorov, Alexei V. Nature Physics, Vol. 9, Issue 10 https://doi.org/10.1038/nphys2744	journal	September 2013
Direct observation of spin-polarized bulk bands in an inversion-symmetric semiconductor Riley, J. M.; Mazzola, F.; Dendzik, M. Nature Physics, Vol. 10, Issue 11 https://doi.org/10.1038/nphys3105	journal	October 2014
Bandgap opening in few-layered monoclinic MoTe2 Keum, Dong Hoon; Cho, Suyeon; Kim, Jung Ho Nature Physics, Vol. 11, Issue 6 https://doi.org/10.1038/nphys3314	journal	May 2015
Experimental observation of topological Fermi arcs in type-II Weyl semimetal MoTe2 Deng, Ke; Wan, Guoliang; Deng, Peng Nature Physics, Vol. 12, Issue 12 https://doi.org/10.1038/nphys3871	journal	September 2016
Edge conduction in monolayer WTe2 Fei, Zaiyao; Palomaki, Tauno; Wu, Sanfeng Nature Physics, Vol. 13, Issue 7 https://doi.org/10.1038/nphys4091	journal	April 2017
Quantum spin Hall state in monolayer 1T'-WTe2 Tang, Shujie; Zhang, Chaofan; Wong, Dillon Nature Physics, Vol. 13, Issue 7 https://doi.org/10.1038/nphys4174	journal	June 2017
Evidence of Electron-Hole Imbalance in WTe ₂ from High-Resolution Angle-Resolved Photoemission Spectroscopy Wang, Chen-Lu; Zhang, Yan; Huang, Jian-Wei Chinese Physics Letters, Vol. 34, Issue 9 https://doi.org/10.1088/0256-307x/34/9/097305	journal	August 2017
Large-scale uniform bilayer graphene prepared by vacuum graphitization of 6H-SiC(0001) substrates Wang, Qingyan; Zhang, Wenhao; Wang, Lili Journal of Physics: Condensed Matter, Vol. 25, Issue 9 https://doi.org/10.1088/0953-8984/25/9/095002	journal	January 2013
Spin-resolved photoemission study of epitaxially grown MoSe ₂ and WSe ₂ thin films Mo, Sung-Kwan; Hwang, Choongyu; Zhang, Yi Journal of Physics: Condensed Matter, Vol. 28, Issue 45 https://doi.org/10.1088/0953-8984/28/45/454001	journal	September 2016
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set Kresse, G.; Furthmüller, J. Physical Review B, Vol. 54, Issue 16, p. 11169-11186 https://doi.org/10.1103/physrevb.54.11169	journal	October 1996
Prediction of Weyl semimetal in orthorhombic MoTe 2 Sun, Yan; Wu, Shu-Chun; Ali, Mazhar N. Physical Review B, Vol. 92, Issue 16 https://doi.org/10.1103/physrevb.92.161107	journal	October 2015
Understanding topological phase transition in monolayer transition metal dichalcogenides Choe, Duk-Hyun; Sung, Ha-Jun; Chang, K. J. Physical Review B, Vol. 93, Issue 12 https://doi.org/10.1103/physrevb.93.125109	journal	March 2016
Origins of the structural phase transitions in MoTe 2 and WTe 2 Kim, Hyun-Jung; Kang, Seoung-Hun; Hamada, Ikutaro Physical Review B, Vol. 95, Issue 18 https://doi.org/10.1103/physrevb.95.180101	journal	May 2017
MoTe 2 : An uncompensated semimetal with extremely large magnetoresistance Thirupathaiah, S.; Jha, Rajveer; Pal, Banabir Physical Review B, Vol. 95, Issue 24 https://doi.org/10.1103/physrevb.95.241105	journal	June 2017
Atomically Thin MoS2 A New Direct-Gap Semiconductor Mak, Kin Fai; Lee, Changgu; Hone, James Physical Review Letters, Vol. 105, Issue 13, Article No.136805 https://doi.org/10.1103/physrevlett.105.136805	journal	September 2010
Quantum Spin Hall Effect in Graphene Kane, C. L.; Mele, E. J. Physical Review Letters, Vol. 95, Issue 22 https://doi.org/10.1103/physrevlett.95.226801	journal	November 2005
Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling Murakami, Shuichi Physical Review Letters, Vol. 97, Issue 23 https://doi.org/10.1103/physrevlett.97.236805	journal	December 2006
Fermi Arcs and Their Topological Character in the Candidate Type-II Weyl Semimetal MoTe 2 Tamai, A.; Wu, Q. S.; Cucchi, I. Physical Review X, Vol. 6, Issue 3 https://doi.org/10.1103/physrevx.6.031021	journal	August 2016
Angle-resolved photoemission studies of the cuprate superconductors Damascelli, Andrea; Hussain, Zahid; Shen, Zhi-Xun Reviews of Modern Physics, Vol. 75, Issue 2 https://doi.org/10.1103/revmodphys.75.473	journal	April 2003
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells Bernevig, B. A.; Hughes, T. L.; Zhang, S.-C. Science, Vol. 314, Issue 5806, p. 1757-1761 https://doi.org/10.1126/science.1133734	journal	December 2006
The valley Hall effect in MoS2 transistors Mak, K. F.; McGill, K. L.; Park, J. Science, Vol. 344, Issue 6191 https://doi.org/10.1126/science.1250140	journal	June 2014
Quantum spin Hall effect in two-dimensional transition metal dichalcogenides Qian, X.; Liu, J.; Fu, L. Science, Vol. 346, Issue 6215 https://doi.org/10.1126/science.1256815	journal	November 2014
2D materials and van der Waals heterostructures Novoselov, K. S.; Mishchenko, A.; Carvalho, A. Science, Vol. 353, Issue 6298 https://doi.org/10.1126/science.aac9439	journal	July 2016
Temperature dependence of band gap in MoSe2 grown by molecular beam epitaxy Choi, Byoung Ki; Kim, Minu; Jung, Kwang-Hwan Nanoscale Research Letters, Vol. 12, Issue 1 https://doi.org/10.1186/s11671-017-2266-7	journal	August 2017
Angle-resolved photoemission spectroscopy for the study of two-dimensional materials Mo, Sung-Kwan Nano Convergence, Vol. 4, Issue 1 https://doi.org/10.1186/s40580-017-0100-7	journal	March 2017
Fully gapped topological surface states in Bi$_2$Se$_3$ films induced by a d-wave high-temperature superconductor Wang, Eryin; Ding, Hao; Fedorov, Alexei V. arXiv https://doi.org/10.48550/arxiv.1309.6676	text	January 2013
2D materials and van der Waals heterostructures Novoselov, K. S.; Mishchenko, A.; Carvalho, A. arXiv https://doi.org/10.48550/arxiv.1608.03059	text	January 2016
Edge conduction in monolayer WTe2 Fei, Zaiyao; Palomaki, Tauno; Wu, Sanfeng arXiv https://doi.org/10.48550/arxiv.1610.07924	text	January 2016
Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling Murakami, Shuichi arXiv https://doi.org/10.48550/arxiv.cond-mat/0607001	text	January 2006
Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells Bernevig, B. Andrei; Hughes, Taylor L.; Zhang, Shou-Cheng arXiv https://doi.org/10.48550/arxiv.cond-mat/0611399	text	January 2006
Temperature dependence of band gap in MoSe2 grown by molecular beam epitaxy Choi, Byoung; Kim, Minu; Jung, Kwang-Hwan Figshare https://doi.org/10.6084/m9.figshare.c.3854305.v1	collection	January 2017

Cited By (5)

Substrate temperature dependence of the crystalline quality for the synthesis of pure-phase MoTe ₂ on graphene/6 H -SiC(0001) by molecular beam epitaxy Castelino, Roshan; Pham, Trung T.; Felten, Alexandre Nanotechnology, Vol. 31, Issue 11 https://doi.org/10.1088/1361-6528/ab5be9	journal	December 2019
Mechanical characterization of phase-changed single-layer MoS ₂ sheets Jung, Jaehyuck; Bark, Hunyoung; Byun, Doyoung 2D Materials, Vol. 6, Issue 2 https://doi.org/10.1088/2053-1583/ab070c	journal	February 2019
Experimental progress on layered topological semimetals Ma, Junchao; Deng, Ke; Zheng, Lu 2D Materials, Vol. 6, Issue 3 https://doi.org/10.1088/2053-1583/ab0902	journal	April 2019
Thickness dependent electronic structure of exfoliated mono- and few-layer 1 T ′ − MoTe 2 Pawlik, A. -S.; Aswartham, S.; Morozov, I. Physical Review Materials, Vol. 2, Issue 10 https://doi.org/10.1103/physrevmaterials.2.104004	journal	October 2018
Experimental Progress on Layered Topological Semimetals Ma, Junchao; Deng, Ke; Zheng, Lu arXiv https://doi.org/10.48550/arxiv.1902.06874	text	January 2019

Similar Records

Quantum spin Hall state in monolayer 1T^'-WTe₂

Journal Article · Mon Jun 26 00:00:00 EDT 2017 · Nature Physics · OSTI ID:1373205

Related Subjects

36 MATERIALS SCIENCE