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Gate-tunable heavy fermions in a moiré Kondo lattice
Wenjin Zhao, Bowen Shen, Zui Tao +6
The Kondo lattice, describing a matrix of local magnetic moments coupled via spin-exchange interactions to itinerant conduction electrons, is a prototype of strongly correlated qua…
Switchable moiré potentials in ferroelectric WTe2/WSe2 superlattices
Kaifei Kang, Wenjin Zhao, Yihang Zeng +4
Moiré materials, with superlattice periodicity many times the atomic length scale, have enabled the studies of strong electronic correlations and band topology with unprecedented t…
Valley-coherent quantum anomalous Hall state in AB-stacked MoTe2/WSe2 bilayers
Zui Tao, Bowen Shen, Shengwei Jiang +11
Moiré materials provide fertile ground for the correlated and topological quantum phenomena. Among them, the quantum anomalous Hall (QAH) effect, in which the Hall resistance is qu…
Realization of the Haldane Chern insulator in a moiré lattice
Wenjin Zhao, Kaifei Kang, Lizhong Li +7
The Chern insulator displays a quantized Hall effect without Landau levels. In a landmark paper in 1988, Haldane showed that a Chern insulator could be realized through complex nex…
Exciton density waves in Coulomb-coupled dual moiré lattices
Yihang Zeng, Zhengchao Xia, Roei Dery +4
Strongly correlated bosons in a lattice are a platform to realize rich bosonic states of matter and quantum phase transitions. While strongly correlated bosons in a lattice have be…
Intrinsic spin Hall torque in a moire Chern magnet
C. L. Tschirhart, Evgeny Redekop, Lizhong Li +9
In spin torque magnetic memories, electrically actuated spin currents are used to switch a magnetic bit. Typically, these require a multilayer geometry including both a free ferrom…
Frustrated magnetic interactions in a Wigner-Mott insulator
Yanhao Tang, Kaixiang Su, Lizhong Li +9
Two-dimensional semiconductor moiré materials have emerged as a highly controllable platform to simulate and explore quantum condensed matter. Compared to real solids, electrons in…
Tunable bilayer Hubbard model physics in twisted WSe2
Yang Xu, Kaifei Kang, Kenji Watanabe +3
Moiré materials with flat electronic bands provide a highly controllable quantum system for studies of strong-correlation physics and topology. In particular, angle-aligned heterob…
Van der Waals pi Josephson junctions
Kaifei Kang, Helmuth Berger, Kenji Watanabe +4
Proximity-induced superconductivity in a ferromagnet can induce Cooper pairs with a finite center-of-mass momentum. The resultant spatially modulated superconducting order paramete…