Interband spectroscopy of Landau levels and magnetoexcitons in bulk black phosphorus
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866912291872571392 |
|---|---|
| author | Okamura, H. Iguchi, S. Sasaki, T. Ikemoto, Y. Moriwaki, T. Akahama, Y. |
| author_facet | Okamura, H. Iguchi, S. Sasaki, T. Ikemoto, Y. Moriwaki, T. Akahama, Y. |
| contents | Low-dimensional systems based on black phosphorus (BP) have recently attracted much interest. Since the crystal structure of BP consists of 2D layers with a strong in-plane anisotropy, its electronic properties at a high magnetic field ($B$) are quite interesting. Here, we report a magneto-optical study of bulk BP at high $B$ to 12 T perpendicular to the 2D layers. In the obtained optical conductivity spectra, periodic peaks are clearly observed corresponding to Landau levels of up to $n$=6 quantum number. They exhibit almost linear shifts with $B$, and from their analysis an electron-hole reduced mass of 0.13 $m_0$ is obtained, where $m_0$ is the electron mass. Many of the peaks appear in pairs, which is interpreted in terms of Zeeman splitting and an electron-hole combined $g$-factor of 6.6 is obtained. In addition, magnetoexciton peaks are observed to shift quadratically with $B$, and the exciton binding energy at $B$=0 is estimated to be 9.7 meV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_04019 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Interband spectroscopy of Landau levels and magnetoexcitons in bulk black phosphorus Okamura, H. Iguchi, S. Sasaki, T. Ikemoto, Y. Moriwaki, T. Akahama, Y. Mesoscale and Nanoscale Physics Low-dimensional systems based on black phosphorus (BP) have recently attracted much interest. Since the crystal structure of BP consists of 2D layers with a strong in-plane anisotropy, its electronic properties at a high magnetic field ($B$) are quite interesting. Here, we report a magneto-optical study of bulk BP at high $B$ to 12 T perpendicular to the 2D layers. In the obtained optical conductivity spectra, periodic peaks are clearly observed corresponding to Landau levels of up to $n$=6 quantum number. They exhibit almost linear shifts with $B$, and from their analysis an electron-hole reduced mass of 0.13 $m_0$ is obtained, where $m_0$ is the electron mass. Many of the peaks appear in pairs, which is interpreted in terms of Zeeman splitting and an electron-hole combined $g$-factor of 6.6 is obtained. In addition, magnetoexciton peaks are observed to shift quadratically with $B$, and the exciton binding energy at $B$=0 is estimated to be 9.7 meV. |
| title | Interband spectroscopy of Landau levels and magnetoexcitons in bulk black phosphorus |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2410.04019 |