What is recorded here?
Separate experiments by Park and colleagues and by Fan Xu and colleagues used magnetotransport and magnetic circular dichroism to study the second moiré band of twisted bilayer MoTe2. Both found ferromagnetic responses near three holes per moiré cell and magnetic-field-induced Chern states. Park and colleagues compared twist angles and observed a high-field Chern-number −2 state near filling −2. Fan Xu and colleagues mapped intermediate-angle devices and found an additional resistance upturn near filling −5/2 that was strongly suppressed by perpendicular field.
Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.
Scientific scope
The two experiments used different devices and analysis conventions. Zero-field transport near filling −3 was not fully quantized; Chern assignments combine Hall response, density-field slopes and calculations. Neither study established a fractional Chern state or non-Abelian anyons in the second band. Twist thresholds, magnetic mechanisms and the interpretation of the resistance upturn remain dependent on finite-device evidence and theoretical models.
Read the original work
- Ferromagnetism and Topology of the Higher Flat Band in a Fractional Chern Insulator (arXiv2406.09591v2)
- Interplay between topology and correlations in the second moiré band of twisted bilayer MoTe2 (arXiv2406.09687v2)
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People and systems
Heonjoon Park; Jiaqi Cai; Eric Anderson; Xiao-Wei Zhang; Xiaoyu Liu; William Holtzmann; Weijie Li; Chong Wang; Chaowei Hu; Yuzhou Zhao; Takashi Taniguchi; Kenji Watanabe; Jihui Yang; David Cobden; Jiun-haw Chu; Nicolas Regnault; B. Andrei Bernevig; Liang Fu; Ting Cao; Di Xiao; Xiaodong Xu; Fan Xu; Xumin Chang; Jiayong Xiao; Yixin Zhang; Feng Liu; Zheng Sun; Ning Mao; Nikolai Peshcherenko; Jiayi Li; Bingbing Tong; Li Lu; Jinfeng Jia; Dong Qian; Zhiwen Shi; Yang Zhang; Xiaoxue Liu; Shengwei Jiang; Tingxin Li
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.
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English catalogue narrative
Ferromagnetism and tunable topology in the second moiré band of MoTe2
Separate experiments by Park and colleagues and by Fan Xu and colleagues used magnetotransport and magnetic circular dichroism to study the second moiré band of twisted bilayer MoTe2. Both found ferromagnetic responses near three holes per moiré cell and magnetic-field-induced Chern states. Park and colleagues compared twist angles and observed a high-field Chern-number −2 state near filling −2. Fan Xu and colleagues mapped intermediate-angle devices and found an additional resistance upturn near filling −5/2 that was strongly suppressed by perpendicular field.
Scientific scope
The two experiments used different devices and analysis conventions. Zero-field transport near filling −3 was not fully quantized; Chern assignments combine Hall response, density-field slopes and calculations. Neither study established a fractional Chern state or non-Abelian anyons in the second band. Twist thresholds, magnetic mechanisms and the interpretation of the resistance upturn remain dependent on finite-device evidence and theoretical models.
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
Heonjoon Park; Jiaqi Cai; Eric Anderson; Xiao-Wei Zhang; Xiaoyu Liu; William Holtzmann; Weijie Li; Chong Wang; Chaowei Hu; Yuzhou Zhao; Takashi Taniguchi; Kenji Watanabe; Jihui Yang; David Cobden; Jiun-haw Chu; Nicolas Regnault; B. Andrei Bernevig; Liang Fu; Ting Cao; Di Xiao; Xiaodong Xu; Fan Xu; Xumin Chang; Jiayong Xiao; Yixin Zhang; Feng Liu; Zheng Sun; Ning Mao; Nikolai Peshcherenko; Jiayi Li; Bingbing Tong; Li Lu; Jinfeng Jia; Dong Qian; Zhiwen Shi; Yang Zhang; Xiaoxue Liu; Shengwei Jiang; Tingxin Li
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.