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| Format: | Preprint |
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2026
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| Online-Zugang: | https://arxiv.org/abs/2605.21989 |
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| _version_ | 1866911704210735104 |
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| author | Jeong, Yunhyeon Kamiyama, Akinori Moore, John N. Mano, Takaaki Sasaki, Ken-ichi Sugiyama, Yuuki Numasawa, Tokiro Hotta, Masahiro Yusa, Go |
| author_facet | Jeong, Yunhyeon Kamiyama, Akinori Moore, John N. Mano, Takaaki Sasaki, Ken-ichi Sugiyama, Yuuki Numasawa, Tokiro Hotta, Masahiro Yusa, Go |
| contents | We report stroboscopic time-resolved photoluminescence (PL) microscopy and spectroscopy revealing the transverse near field of an edge excitation in a $ν=1/3$ fractional quantum Hall (FQH) state. Time-resolved $y$-$t$ maps reveal an immediate PL response extending more than $30~μ\mathrm{m}$ into the bulk transverse to the edge when the edge magnetoplasmon (EMP) passes the mesa boundary. The nearly instantaneous nature of this long-range response identifies it as the non-radiative, quasi-electrostatic near field, revealing the EMP as a spatially extended collective excitation rather than a strictly one-dimensional charge-density oscillation. We also observe secondary bulk-side responses distinct from the immediate transverse near-field response. The coexistence of these immediate and secondary responses shows that electrically launched edge excitations produce bulk-side dynamics on widely separated time scales. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_21989 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Direct observation of the transverse near field of an edge excitation and associated slow secondary dynamics in a fractional quantum Hall state Jeong, Yunhyeon Kamiyama, Akinori Moore, John N. Mano, Takaaki Sasaki, Ken-ichi Sugiyama, Yuuki Numasawa, Tokiro Hotta, Masahiro Yusa, Go Mesoscale and Nanoscale Physics We report stroboscopic time-resolved photoluminescence (PL) microscopy and spectroscopy revealing the transverse near field of an edge excitation in a $ν=1/3$ fractional quantum Hall (FQH) state. Time-resolved $y$-$t$ maps reveal an immediate PL response extending more than $30~μ\mathrm{m}$ into the bulk transverse to the edge when the edge magnetoplasmon (EMP) passes the mesa boundary. The nearly instantaneous nature of this long-range response identifies it as the non-radiative, quasi-electrostatic near field, revealing the EMP as a spatially extended collective excitation rather than a strictly one-dimensional charge-density oscillation. We also observe secondary bulk-side responses distinct from the immediate transverse near-field response. The coexistence of these immediate and secondary responses shows that electrically launched edge excitations produce bulk-side dynamics on widely separated time scales. |
| title | Direct observation of the transverse near field of an edge excitation and associated slow secondary dynamics in a fractional quantum Hall state |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2605.21989 |