journal article·2025-07

Strain‐Induced Ferromagnetism and Valley Polarization Enhancement in WSe 2 /WSe 2 /NiPS 3 Moiré Superlattices

Junying Chen, Xing Xie, Shaofei Li, Zongwen Liu, Jian‐Tao Wang, Jun He, Yanping Liu

Small· Volume 21· Issue 27
Publisher page

Abstract

Abstract Moiré superlattices, formed by stacking layered materials with slight lattice mismatches or rotational misalignment, provide a powerful platform for engineering quantum states at the nanoscale. These systems enable precise control over exciton dynamics and correlated electronic phases through the moiré potential. While significant progress has been made in understanding moiré excitons in twisted bilayer systems, their integration with magnetic materials for tunable excitonic control remains challenging. Here, a heterostructure comprising twisted bilayer WSe 2 and the antiferromagnet NiPS 3 is investigated, placed on an optical microcavity with silicon holes. Low‐temperature photoluminescence (PL) measurements reveal that the microcavity edge enhances both the PL intensity and optical anisotropy of moiré excitons. Additionally, strain modulation at the microcavity edge alters the magnetic ordering of NiPS 3 and significantly enhances the valley polarization under an external magnetic field. These findings demonstrate a robust approach for integrating magnetic order with moiré superlattices, offering new avenues for controlling exciton properties in quantum information and photonic applications.
Source: crossref · Quality: baseline

Research context

OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Institute of Quantum Physics School of Physics Central South University 932 South Lushan Road Changsha Hunan 410083 P. R. China

State Key Laboratory of Precision Manufacturing for Extreme Service Performance Central South University 932 South Lushan Road Changsha Hunan 410083 P. R. China

School of Chemical and Biomolecular Engineering The University of Sydney Sydney NSW 2006 Australia

The University of Sydney Nano Institute The University of Sydney Sydney NSW 2006 Australia

Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P. R. China

School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 P. R. China

Songshan Lake Materials Laboratory Dongguan Guangdong 523808 P. R. China

Shenzhen Research Institute of Central South University Shenzhen 518000 P. R. China

Funding

National Natural Science Foundation of China · Australian Research Council · National Key Research and Development Program of China

References (58)

Show source-provided references
1. 10.1126/science.110289610.1126/science.1102896 ↗
2. 10.3866/PKU.WHXB20210801710.3866/PKU.WHXB202108017 ↗
3. 10.1126/science.aac943910.1126/science.aac9439 ↗
4. Tiwari S. K. · J. Sci. Adv. Mater. Dev. · 2020 · 5 · 10
5. 10.1021/acs.chemrev.6b0055810.1021/acs.chemrev.6b00558 ↗
6. 10.1038/nature2616010.1038/nature26160 ↗
7. 10.1038/nature2615410.1038/nature26154 ↗
8. 10.1038/s41586-020-2255-310.1038/s41586-020-2255-3 ↗
9. 10.1038/s41586-020-2458-710.1038/s41586-020-2458-7 ↗
10. 10.1007/s40820-020-00464-810.1007/s40820-020-00464-8 ↗
11. 10.1126/science.adh150610.1126/science.adh1506 ↗
12. 10.1038/s41586-018-0107-110.1038/s41586-018-0107-1 ↗
13. 10.1038/s41565-018-0138-710.1038/s41565-018-0138-7 ↗
14. 10.1038/nnano.2012.19310.1038/nnano.2012.193 ↗
15. 10.1038/s41565-021-01068-y10.1038/s41565-021-01068-y ↗
16. 10.1038/s41563-020-0708-610.1038/s41563-020-0708-6 ↗
17. 10.1103/PhysRevB.102.07541310.1103/PhysRevB.102.075413 ↗
18. 10.1103/PhysRevLett.124.08640110.1103/PhysRevLett.124.086401 ↗
19. 10.1103/PhysRevLett.108.19680210.1103/PhysRevLett.108.196802 ↗
20. 10.1038/natrevmats.2016.5510.1038/natrevmats.2016.55 ↗
21. 10.1103/PhysRevB.101.12540110.1103/PhysRevB.101.125401 ↗
22. 10.1038/s41377-022-00854-010.1038/s41377-022-00854-0 ↗
23. 10.1038/s41377-023-01171-w10.1038/s41377-023-01171-w ↗
24. 10.1002/smll.20220798810.1002/smll.202207988 ↗
25. 10.1038/nature2206010.1038/nature22060 ↗
26. 10.1038/s41586-018-0626-910.1038/s41586-018-0626-9 ↗
27. 10.1126/science.aav445010.1126/science.aav4450 ↗
28. 10.1021/acs.nanolett.4c0050310.1021/acs.nanolett.4c00503 ↗
29. 10.1021/acs.nanolett.8b0110510.1021/acs.nanolett.8b01105 ↗
30. 10.1038/s41563-020-0791-810.1038/s41563-020-0791-8 ↗
31. 10.1126/sciadv.abc762810.1126/sciadv.abc7628 ↗
32. 10.1038/s41467-020-18627-x10.1038/s41467-020-18627-x ↗
33. 10.1021/acsnano.1c0915010.1021/acsnano.1c09150 ↗
34. 10.1038/nature2239110.1038/nature22391 ↗
35. 10.1038/s41565-019-0598-410.1038/s41565-019-0598-4 ↗
36. 10.1038/s41467-020-19262-210.1038/s41467-020-19262-2 ↗
37. 10.1038/s41467-018-08284-610.1038/s41467-018-08284-6 ↗
38. 10.1063/5.022394510.1063/5.0223945 ↗
39. 10.1038/s41563-023-01645-710.1038/s41563-023-01645-7 ↗
40. 10.1063/5.013590810.1063/5.0135908 ↗
41. 10.1126/science.adg001410.1126/science.adg0014 ↗
42. 10.1002/adfm.20240249310.1002/adfm.202402493 ↗
43. 10.1063/5.015959810.1063/5.0159598 ↗
44. 10.1021/acs.nanolett.3c0338810.1021/acs.nanolett.3c03388 ↗
45. 10.1021/acsphotonics.1c0033610.1021/acsphotonics.1c00336 ↗
46. 10.1021/acs.nanolett.8b0004910.1021/acs.nanolett.8b00049 ↗
47. 10.1021/acs.nanolett.9b0064110.1021/acs.nanolett.9b00641 ↗
48. 10.1021/acsnano.2c0166510.1021/acsnano.2c01665 ↗
49. 10.1063/1.10472310.1063/1.104723 ↗
50. 10.1016/j.diamond.2017.03.00210.1016/j.diamond.2017.03.002 ↗
51. 10.1038/s41467-023-42710-810.1038/s41467-023-42710-8 ↗
52. 10.1103/PhysRevB.97.03530610.1103/PhysRevB.97.035306 ↗
53. 10.1038/s41563-021-00968-710.1038/s41563-021-00968-7 ↗
54. 10.1038/s41565-021-01052-610.1038/s41565-021-01052-6 ↗
55. 10.1038/s41565-023-01356-910.1038/s41565-023-01356-9 ↗
56. 10.1088/0953-8984/21/39/39550210.1088/0953-8984/21/39/395502 ↗
57. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
58. 10.1002/jcc.2049510.1002/jcc.20495 ↗