What is recorded here?
Redekop and colleagues used a nanoscale SQUID sensor to image magnetic fringe fields in twisted MoTe2 devices at 1.6 kelvin. Density-dependent magnetic features appeared near several fractional fillings, while spatial reconstruction mapped magnetization and disorder across the devices. Assuming the Chern number inferred from earlier transport, the reconstructed magnetization change near filling −2/3 implied a local thermodynamic gap of about 7 meV. The work supplied local magnetic evidence complementary to transport and optical studies of fractional Chern insulators.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
This record is supported by the May 2024 preprint. The gap estimate assumes out-of-plane magnetization, a specified Chern number, an inversion boundary condition and an empirical identification of the topological magnetization slope. The quoted local spread is not a complete experimental uncertainty. Two devices had been used in earlier transport or optical studies, so this is a new probe rather than an independent first realization. Finite applied fields were used in representative scans. Fractional charge, braiding statistics and perfect Hall quantization were not measured here.
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People and systems
Evgeny Redekop; Canxun Zhang; Heonjoon Park; Jiaqi Cai; Eric Anderson; Owen Sheekey; Trevor Arp; Grigory Babikyan; Samuel Salters; Kenji Watanabe; Takashi Taniguchi; Xiaodong Xu; Andrea F. Young
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English catalogue narrative
Local magnetic imaging and gap estimates in fractional Chern insulators
Redekop and colleagues used a nanoscale SQUID sensor to image magnetic fringe fields in twisted MoTe2 devices at 1.6 kelvin. Density-dependent magnetic features appeared near several fractional fillings, while spatial reconstruction mapped magnetization and disorder across the devices. Assuming the Chern number inferred from earlier transport, the reconstructed magnetization change near filling −2/3 implied a local thermodynamic gap of about 7 meV. The work supplied local magnetic evidence complementary to transport and optical studies of fractional Chern insulators.
Scientific scope
This record is supported by the May 2024 preprint. The gap estimate assumes out-of-plane magnetization, a specified Chern number, an inversion boundary condition and an empirical identification of the topological magnetization slope. The quoted local spread is not a complete experimental uncertainty. Two devices had been used in earlier transport or optical studies, so this is a new probe rather than an independent first realization. Finite applied fields were used in representative scans. Fractional charge, braiding statistics and perfect Hall quantization were not measured here.
Reading status
This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.
People and systems
Evgeny Redekop; Canxun Zhang; Heonjoon Park; Jiaqi Cai; Eric Anderson; Owen Sheekey; Trevor Arp; Grigory Babikyan; Samuel Salters; Kenji Watanabe; Takashi Taniguchi; Xiaodong Xu; Andrea F. Young
These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.