تقرير
Visualization of alternating triangular domains of charge density waves in 2H-NbSe$_2$ by scanning tunneling microscopy
| العنوان: | Visualization of alternating triangular domains of charge density waves in 2H-NbSe$_2$ by scanning tunneling microscopy |
|---|---|
| المؤلفون: | Yoshizawa, Shunsuke, Sagisaka, Keisuke, Sakata, Hideaki |
| المصدر: | Phys. Rev. Lett. 132, 056401 (2024) |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science |
| الوصف: | The charge density wave (CDW) state of 2H-NbSe$_2$ features commensurate domains separated by domain boundaries accompanied by phase slips known as discommensurations. We have unambiguously visualized the structure of CDW domains using a displacement-field measurement algorithm on a scanning tunneling microscopy image. Each CDW domain is delimited by three vertices and three edges of discommensurations and is designated by a triplet of integers whose sum identifies the types of commensurate structure. The observed structure is consistent with the alternating triangular tiling pattern predicted by a phenomenological Landau theory. The domain shape is affected by crystal defects and also by topological defects in the CDW phase factor. Our results provide a foundation for a complete understanding of the CDW state and its relation to the superconducting state. Comment: main text (6 pages, 4 figures) + supplemental material (8 pages, 11 figures) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevLett.132.056401 |
| URL الوصول: | http://arxiv.org/abs/2304.00846 |
| رقم الأكسشن: | edsarx.2304.00846 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevLett.132.056401 |
|---|