التفاصيل البيبلوغرافية
| العنوان: |
Synthesis, Magnetic Properties, and Electronic Structure of Magnetic Topological Insulator MnBi 2 Se 4 |
| المؤلفون: |
Tiancong Zhu (4056223), Alexander J. Bishop (10934401), Tong Zhou (3770), Menglin Zhu (9095774), Dante J. O’Hara (10934404), Alexander A. Baker (6263483), Shuyu Cheng (10934407), Robert C. Walko (10934410), Jacob J. Repicky (8448117), Tao Liu (10785), Jay A. Gupta (2201575), Chris M. Jozwiak (10934413), Eli Rotenberg (2183532), Jinwoo Hwang (5130152), Igor Žutić (9033302), Roland K. Kawakami (2066125) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Biochemistry, Medicine, Biotechnology, Cancer, Hematology, Environmental Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, MnBi 2 Se 4, MnBi 2 Se 4 support novel topologic., bulk crystals, well-ordered vdW crystal, antiferromagnetic topological insul., magnetic-ordering temperature, samples exhibit, van der Waals, Magnetic Topological Insulator MnBi., gapless Dirac-like surface state, topological phases, scanning tunneling microscopy, layer-by-layer synthesis, topological insulator, Angle-resolved photoemission spectr., Magnetic Properties, studies show, easy-plane anisotropy, beam epitaxy, topological insulators MnBi 2 Te 4, out-of-plane orientation, Electronic Structure |
| الوصف: |
The intrinsic magnetic topological insulators MnBi 2 Te 4 and MnBi 2 Se 4 support novel topological states related to symmetry breaking by magnetic order. Unlike MnBi 2 Te 4 , the study of MnBi 2 Se 4 has been inhibited by the lack of bulk crystals, as the van der Waals (vdW) crystal is not the thermodynamic equilibrium phase. Here, we report the layer-by-layer synthesis of vdW MnBi 2 Se 4 crystals using nonequilibrium molecular beam epitaxy. Atomic-resolution scanning transmission electron microscopy and scanning tunneling microscopy identify a well-ordered vdW crystal with septuple-layer base units. The magnetic properties agree with the predicted layered antiferromagnetic ordering but disagree with its predicted out-of-plane orientation. Instead, our samples exhibit an easy-plane anisotropy, which is explained by including dipole–dipole interactions. Angle-resolved photoemission spectroscopy reveals the gapless Dirac-like surface state, which demonstrates that MnBi 2 Se 4 is a topological insulator above the magnetic-ordering temperature. These studies show that MnBi 2 Se 4 is a promising candidate for exploring rich topological phases of layered antiferromagnetic topological insulators. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
unknown |
| العلاقة: |
https://figshare.com/articles/journal_contribution/Synthesis_Magnetic_Properties_and_Electronic_Structure_of_Magnetic_Topological_Insulator_MnBi_sub_2_sub_Se_sub_4_sub_/14745346Test |
| DOI: |
10.1021/acs.nanolett.1c00141.s001 |
| الإتاحة: |
https://doi.org/10.1021/acs.nanolett.1c00141.s001Test |
| حقوق: |
CC BY-NC 4.0 |
| رقم الانضمام: |
edsbas.84D1E77 |
| قاعدة البيانات: |
BASE |
