Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films
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arXiv
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| Format: | Preprint |
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2025
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| author | Kobayashi, Yuta Mitsuzuka, Arata Kondo, Haruo Shoshin, Makoto Uzuhashi, Jun Ohkubo, Tadakatsu Hayashi, Masamitsu Kawaguchi, Masashi |
| author_facet | Kobayashi, Yuta Mitsuzuka, Arata Kondo, Haruo Shoshin, Makoto Uzuhashi, Jun Ohkubo, Tadakatsu Hayashi, Masamitsu Kawaguchi, Masashi |
| contents | Tellurium (Te), a two-dimensional material with pronounced structural anisotropy, exhibits exceptional electrical and optical properties that are highly sensitive to its crystallographic orientation. However, conventional synthesis techniques offer limited control over the in-plane alignment of Te's crystallographic c-axis, hindering large-scale integration. Here, we report a novel, non-contact method to dynamically manipulate the c-axis orientation of Te thin films using linearly polarized picosecond laser pulses. We show that the c-axis can be omnidirectionally reoriented perpendicular to the laser polarization, even in initially polycrystalline films. This reorientation is fully reversible, allowing for rewritable and spatially selective control of the c-axis orientation post-deposition. Our light-driven approach enables programmable anisotropy in Te, opening new avenues for reconfigurable optoelectronic and photonic devices, such as active metasurfaces and CMOS-compatible architectures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_18584 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films Kobayashi, Yuta Mitsuzuka, Arata Kondo, Haruo Shoshin, Makoto Uzuhashi, Jun Ohkubo, Tadakatsu Hayashi, Masamitsu Kawaguchi, Masashi Mesoscale and Nanoscale Physics Tellurium (Te), a two-dimensional material with pronounced structural anisotropy, exhibits exceptional electrical and optical properties that are highly sensitive to its crystallographic orientation. However, conventional synthesis techniques offer limited control over the in-plane alignment of Te's crystallographic c-axis, hindering large-scale integration. Here, we report a novel, non-contact method to dynamically manipulate the c-axis orientation of Te thin films using linearly polarized picosecond laser pulses. We show that the c-axis can be omnidirectionally reoriented perpendicular to the laser polarization, even in initially polycrystalline films. This reorientation is fully reversible, allowing for rewritable and spatially selective control of the c-axis orientation post-deposition. Our light-driven approach enables programmable anisotropy in Te, opening new avenues for reconfigurable optoelectronic and photonic devices, such as active metasurfaces and CMOS-compatible architectures. |
| title | Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2508.18584 |