Enhanced Phonon-Assisted Tunneling in Metal-Twisted Bilayer Graphene Junctions
Source abstract
Abstract
-twisted bilayer graphene heterostructures across a broad range of gate and bias voltages. The observed experimental features are attributed to phonon-assisted tunneling and the significantly high density of states within the moiré bands. A notable finding is the enhanced phonon-assisted tunneling in twisted bilayer graphene compared to Bernal bilayer graphene, which arises from a more relaxed in-plane momentum matching criterion. Theoretical calculations of phonon dispersions enable us to identify low-energy phonon modes in both Bernal and twisted bilayers of graphene, thereby elucidating the underlying mechanism of tunneling. Our results establish planar tunneling as a versatile tool to further understand electron-phonon coupling in twisted van der Waals materials.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Graphene research and applications · Quantum and electron transport phenomena · Molecular Junctions and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Instrumentation and Applied Physics
Indian Institute of Science
Department of Physics
Research Center for Electronic and Optical Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
Research Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
Funding
Ministry of Education, Culture, Sports, Science and Technology · Science and Engineering Research Board · Mission on Nano Science and Technology · Japan Society for the Promotion of Science · Ministry of Education, India
References (64)
Show source-provided references
1. 10.1088/1361-6633/ad67ed10.1088/1361-6633/ad67ed ↗
2. 10.1038/s41563-020-00840-010.1038/s41563-020-00840-0 ↗
3. 10.1038/nature2616010.1038/nature26160 ↗
4. 10.1126/science.aav191010.1126/science.aav1910 ↗
5. 10.1038/s41586-019-1695-010.1038/s41586-019-1695-0 ↗
6. 10.1103/PhysRevLett.121.21700110.1103/PhysRevLett.121.217001 ↗
7. 10.1038/nature2615410.1038/nature26154 ↗
8. 10.1038/s41567-020-0928-310.1038/s41567-020-0928-3 ↗
9. 10.1038/s41586-020-2459-610.1038/s41586-020-2459-6 ↗
10. 10.1038/s41567-022-01557-410.1038/s41567-022-01557-4 ↗
11. 10.1126/science.aaw378010.1126/science.aaw3780 ↗
12. 10.1038/s41586-020-2049-710.1038/s41586-020-2049-7 ↗
13. 10.1038/s41467-023-39855-x10.1038/s41467-023-39855-x ↗
14. 10.1021/acs.nanolett.2c0090510.1021/acs.nanolett.2c00905 ↗
15. 10.1103/PhysRevB.100.07541610.1103/PhysRevB.100.075416 ↗
16. 10.1021/acs.nanolett.2c0201010.1021/acs.nanolett.2c02010 ↗
17. 10.1103/PhysRevLett.121.25700110.1103/PhysRevLett.121.257001 ↗
18. 10.1103/PhysRevLett.124.07680110.1103/PhysRevLett.124.076801 ↗
19. 10.1038/s41567-019-0596-310.1038/s41567-019-0596-3 ↗
20. 10.1103/PhysRevB.99.16511210.1103/PhysRevB.99.165112 ↗
21. 10.1038/nphys146310.1038/nphys1463 ↗
22. 10.1103/PhysRevLett.109.12680110.1103/PhysRevLett.109.126801 ↗
23. 10.1103/PhysRevLett.121.03770210.1103/PhysRevLett.121.037702 ↗
24. 10.1038/s41586-019-1431-910.1038/s41586-019-1431-9 ↗
25. 10.1038/s41586-019-1422-x10.1038/s41586-019-1422-x ↗
26. 10.1038/s41467-021-24480-310.1038/s41467-021-24480-3 ↗
27. 10.1021/acs.nanolett.8b0229510.1021/acs.nanolett.8b02295 ↗
28. 10.1002/smtd.20190081710.1002/smtd.201900817 ↗
29. 10.1103/PhysRevB.95.16141010.1103/PhysRevB.95.161410 ↗
30. 10.1103/PhysRevLett.101.21680310.1103/PhysRevLett.101.216803 ↗
31. 10.1002/andp.20140009110.1002/andp.201400091 ↗
32. 10.1103/PhysRevLett.123.04660110.1103/PhysRevLett.123.046601 ↗
33. 10.1038/s41586-021-04002-310.1038/s41586-021-04002-3 ↗
34. 10.1038/s41586-020-2373-y10.1038/s41586-020-2373-y ↗
35. 10.1038/s41586-022-05685-y10.1038/s41586-022-05685-y ↗
36. 10.1126/science.abd319010.1126/science.abd3190 ↗
37. 10.1021/acs.nanolett.6b0284110.1021/acs.nanolett.6b02841 ↗
38. 10.1103/PhysRevB.44.651110.1103/PhysRevB.44.6511 ↗
39. 10.1103/PhysRevLett.84.580810.1103/PhysRevLett.84.5808 ↗
40. 10.1021/acs.nanolett.5b0262510.1021/acs.nanolett.5b02625 ↗
41. 10.1103/PhysRevLett.116.18660310.1103/PhysRevLett.116.186603 ↗
42. 10.1126/science.121846110.1126/science.1218461 ↗
43. 10.1021/nl300220510.1021/nl3002205 ↗
44. 10.1021/acs.nanolett.7b0150510.1021/acs.nanolett.7b01505 ↗
45. 10.1103/PhysRevLett.120.17770210.1103/PhysRevLett.120.177702 ↗
46. 10.1038/nnano.2014.18710.1038/nnano.2014.187 ↗
47. 10.1021/acs.nanolett.6b0436910.1021/acs.nanolett.6b04369 ↗
48. 10.1103/PhysRevLett.6.5710.1103/PhysRevLett.6.57 ↗
49. 10.1103/PhysRevB.93.06050510.1103/PhysRevB.93.060505 ↗
50. 10.1063/1.511842210.1063/1.5118422 ↗
51. 10.1103/PhysRevB.85.07340510.1103/PhysRevB.85.073405 ↗
52. 10.1038/nphys102210.1038/nphys1022 ↗
53. 10.1063/1.277108410.1063/1.2771084 ↗
54. 10.1103/PhysRevB.102.11541010.1103/PhysRevB.102.115410 ↗
55. 10.1103/PhysRevB.100.07543510.1103/PhysRevB.100.075435 ↗
56. 10.48550/arXiv.2410.2107510.48550/arXiv.2410.21075 ↗
57. 10.1021/acs.jpclett.1c0180210.1021/acs.jpclett.1c01802 ↗
58. 10.1021/acs.nanolett.5b0526310.1021/acs.nanolett.5b05263 ↗
59. 10.1016/j.cpc.2021.10818410.1016/j.cpc.2021.108184 ↗
60. 10.1016/j.cpc.2021.10817110.1016/j.cpc.2021.108171 ↗
61. 10.1088/0953-8984/14/4/31210.1088/0953-8984/14/4/312 ↗
62. 10.1103/PhysRevB.98.23540410.1103/PhysRevB.98.235404 ↗
63. 10.1103/PhysRevB.110.12542110.1103/PhysRevB.110.125421 ↗
64. 10.1088/1361-648X/acd83110.1088/1361-648X/acd831 ↗