Strain Tuning the Occupation of Candidate Topological Weyl States in W‐Doped MoTe 2
Source abstract
Abstract
ABSTRACT Strain‐induced modifications of the electronic structure in ‐ were studied using hard X‐ray angle‐resolved photoemission spectroscopy (HARPES). Partial substitution of Mo with W stabilizes the metastable low‐temperature orthorhombic phase of . Samples were first characterized by angle‐resolved photoemission spectroscopy experiments with soft X‐rays and higher resolution, showing good agreement with ab initio calculations of electronic states related to topology. The modification of the bulk electronic structure due to the applied strain was assessed using operando HARPES. Applying tensile strain along the ‐axis with amplitudes up to 0.34% result in changes in the bulk electronic structure as predicted by previous ab‐initio calculations. In particular, the results demonstrate a strain‐driven depletion of electronic states with heavy masses and high scattering rates, leading to an increase in conductivity. In contrast, tensile strain along the ‐axis results in a significant increase in resistivity, which we confirmed by transport studies.
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Research context
OpenAlex topics: Topological Materials and Phenomena · 2D Materials and Applications · Organic and Molecular Conductors Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institut für Physik Johannes Gutenberg‐Universität Mainz Germany
Sumy State University Sumy Ukraine
Institute of Magnetism of the NAS and MES of Ukraine Kyiv Ukraine
Institut für Experimentelle und Angewandte Physik Christian‐Albrechts‐Universität zu Kiel Kiel Germany
Institute for Quantum Materials and Technologies Karlsruhe Institute of Technology Karlsruhe Germany
Institut Néel CNRS/UGA UPR2940 Grenoble France
Karlsruhe Nano Micro Facility (KNMFi) Karlsruhe Institute of Technology Karlsruhe Germany
Deutsches Elektronen‐Synchrotron DESY Hamburg Germany
Peter Grünberg Institut and Institute for Advanced Simulation Forschungszentrum Jülich and JARA Jülich Germany
Ruprecht Haensel Laboratory Deutsches Elektronen‐Synchrotron DESY Hamburg Germany
Physikalisches Institut Goethe Universität Frankfurt Frankfurt am Main Germany
Funding
Bundesministerium für Bildung und Forschung · Deutsche Forschungsgemeinschaft
References (52)
Show source-provided references
1. Recent Advances in MoTe2 Thin Films: Synthesis, Material Properties, and Emerging Applications10.1021/acsmaterialslett.5c01148 ↗
2. On the Origin of Charge‐Density Waves in Select Layered Transition‐Metal Dichalcogenides
3. Role of Interlayer Shear Phonons on Lattice Symmetry Switching in the Transition Metal Dichalcogenide WTe210.1103/pg5k-2jmr ↗
4. Kramers Nodal Lines in Intercalated TaS2 Superconductors10.1038/s41467-025-60020-z ↗
5. Tunable and Unconventional Fermi Arcs of Two‐Dimensional Transition‐Metal Dichalcogenide Modulated Photonic Dirac Semimetal10.1515/nanoph-2025-0083 ↗
6. Orbital Hall Effect and Topology on a Two‐Dimensional Triangular Lattice: From Bulk to Edge10.1103/PhysRevB.110.085412 ↗
7. Higher‐Order Topology, Monopole Nodal Lines, and the Origin of Large Fermi Arcs in Transition Metal Dichalcogenides XTe2 (X = Mo, W)10.1103/PhysRevLett.123.186401 ↗
8. Electric‐Field‐Induced Structural Transition in Vertical MoTe2‐ and Mo1‐xWxTe2‐Based Resistive Memories10.1038/s41563-018-0234-y ↗
9. Topological Materials: Weyl Semimetals10.1146/annurev-conmatphys-031016-025458 ↗
10. Signature of Type‐II Weyl Semimetal Phase in MoTe210.1038/ncomms13973 ↗
11. Experimental Observation of Topological Fermi Arcs in Type‐II Weyl Semimetal MoTe210.1038/nphys3871 ↗
12. MoTe2: A Type‐II Weyl Topological Metal10.1103/PhysRevLett.117.056805 ↗
13. Type‐II Weyl Semimetals10.1038/nature15768 ↗
14. Analysis Methodology of Coherent Oscillations in Time‐ and Angle‐Resolved Photoemission Spectroscopy10.1063/5.0234899 ↗
15. Probing Lifshitz Shift and Topological Phase Transition of MoTe2 with Photoemission in Momentum and Real Space10.1021/acs.jpcc.5c06130 ↗
16. Surface Electronic States and Inclining Surfaces in MoTe2 Probed by Photoemission Spectromicroscopy10.7566/JPSJ.90.084704 ↗
17. Surface Band Characters of the Weyl Semimetal Candidate Material MoTe2 Revealed by One‐Step Angle‐Resolved Photoemission Theory10.1103/PhysRevB.103.125139 ↗
18. Enhanced Ultrafast Relaxation Rate in the Weyl Semimetal Phase of MoTe2 Measured by Time‐ and Angle‐Resolved Photoelectron Spectroscopy10.1103/PhysRevB.96.241408 ↗
19. MoTe2: An Uncompensated Semimetal with Extremely Large Magnetoresistance10.1103/PhysRevB.95.241105 ↗
20. Activation of New Raman Modes by Inversion Symmetry Breaking in Type II Weyl Semimetal Candidate T'‐MoTe210.1021/acs.nanolett.6b02666 ↗
21. Ferroelectric‐Induced Phase Change Device with Polymorphic Mo1‐xWxTe2 for Neuromorphic Computing10.1002/smll.202505378 ↗
22. O.Fedchenko F. K.Diekmann P.Russmann et al. “Doping‐Induced Electronic and Structural Phase Transition in the Bulk Weyl Semimetal Mo1‐xWxTe2 ”arXiv:2310.10593(2023).
23. Phase‐Transition‐Induced Thermal Hysteresis in Type‐II Weyl Semimetals MoTe2 and Mo1‐xWxTe210.1016/j.mtphys.2022.100918 ↗
24. Tunable Structural Phase Transition and Superconductivity in the Weyl Semimetal Mo1‐xWxTe210.1103/PhysRevB.101.140505 ↗
25. Appearance of a Td Phase Across the Td‐1T' Phase Boundary in the Weyl Semimetal MoTe210.1103/PhysRevB.100.100101 ↗
26. Phase Transition and Electronic Structure Evolution of MoTe2 Induced by W Substitution10.1103/PhysRevB.98.144114 ↗
27. Composition and Temperature‐Dependent Phase Transition in Miscible Mo1‐xWxTe2 Single Crystals10.1038/srep44587 ↗
28. Engineering the Structural and Electronic Phases of MoTe2 Through W Substitution10.1021/acs.nanolett.6b04814 ↗
29. Prediction of an Arc‐Tunable Weyl Fermion Metallic State in MoxW1‐xTe210.1038/ncomms10639 ↗
30. Tunable Photoelectric Properties of Monolayer Mo1‐xWxTe2 Alloys: A First‐Principles Study10.1039/D4RA04653F ↗
31. Prediction of Weyl Semimetal in Orthorhombic MoTe210.1103/PhysRevB.92.161107 ↗
32. Discovery of a New Type of Topological Weyl Fermion Semimetal State in MoxW1‐xTe210.1038/ncomms13643 ↗
33. Fermi Polarons Under Strain‐Induced Pseudomagnetic Fields10.1038/s41467-025-66192-y ↗
34. Efficient Strain Modulation of 2D Materials via Polymer Encapsulation10.1038/s41467-020-15023-3 ↗
35. Strain Engineering of 2D Semiconductors and Graphene: From Strain Fields to Band‐Structure Tuning and Photonic Applications10.1038/s41377-020-00421-5 ↗
36. Exceptional Tunability of Band Energy in a Compressively Strained Trilayer MoS2 Sheet10.1021/nn4024834 ↗
37. Elastic and Electronic Tuning of Magnetoresistance in MoTe210.1126/sciadv.aao4949 ↗
38. Observation of Strain‐Modulated Topological Insulator and Semimetal States in Monolayer 1T'‐MoTe210.1063/5.0256544 ↗
39. In Situ Strain Tuning of the Metal‐Insulator Transition of Ca2RuO4 in Angle‐Resolved Photoemission Experiments10.1038/s41467-018-06945-0 ↗
40. Uniaxial Strain‐Induced Phase Transition in the 2D Topological Semimetal IrTe210.1038/s43246-021-00130-5 ↗
41. Role of Strain on Electronic and Mechanical Response of Semiconducting Transition‐Metal Dichalcogenide Monolayers: An Ab Initio Study10.1063/1.4883995 ↗
42. Direct 3D Mapping of the Fermi Surface and Fermi Velocity10.1038/nmat4875 ↗
43. Chirality in the Kagome Metal CsV3Sb510.1103/PhysRevLett.134.096401 ↗
44. Electron‐Phonon Coupling at the Te 5p Hole Pocket in TiTe210.1103/PhysRevB.108.115150 ↗
45. High‐Accuracy Bulk Electronic Band Mapping with Eliminated Diffraction Effects Using Hard X‐Ray Photoelectron Momentum Microscopy10.1038/s42005-019-0208-7 ↗
46. Electronic Structure of EuPd2Si2 in the Vicinity of the Critical Endpoint10.1103/PhysRevB.111.195149 ↗
47. C.Schlueter A.Gloskovskii K.Ederer et al. “The New Dedicated HAXPES Beamline P22 at PETRA III ” inAIP Conference Proceedings vol.2054(Author(s) 2019) 040010.10.1063/1.5084611 ↗
48. Progress in HAXPES Performance Combining Full‐Field k‐Imaging with Time‐of‐Flight Recording10.1107/S1600577519012773 ↗
49. Observation of Time‐Reversal Symmetry Breaking in the Band Structure of Altermagnetic RuO2${\rm RuO}_2$10.1126/sciadv.adj4883 ↗
50. Temperature‐Dependent Change of the Electronic Structure in the Kondo Lattice System YbRh2Si2
51. Elastoresistivity in the Incommensurate Charge Density Wave Phase of BaNi2(As1‐xPx)210.1038/s41535-022-00525-8 ↗
52. Calculating Properties with the Coherent‐Potential Approximation10.1103/PhysRevB.21.3222 ↗