572 citations · 2.5k across the 20 of their papers we have counts for
20 papers
Magneto-Induced Topological Phase Transition in Inverted InAs/GaSb Bilayers
Zhongdong Han, Tingxin Li, Long Zhang +1
We report a magneto-induced topological phase transition in inverted InAs/GaSb bilayers from a quantum spin Hall insulator to a normal insulator. We utilize a dual-gated Corbino de…
Observation of integer and fractional quantum anomalous Hall effects in twisted bilayer MoTe2
Fan Xu, Zheng Sun, Tongtong Jia +13
The interplay between strong correlations and topology can lead to the emergence of intriguing quantum states of matter. One well-known example is the fractional quantum Hall effec…
Observation of spin polarons in a frustrated moiré Hubbard system
Zui Tao, Wenjin Zhao, Bowen Shen +5
The electron's kinetic energy plays a pivotal role in magnetism. While virtual electron hopping promotes antiferromagnetism in an insulator, the real process usually favors ferroma…
Giant spin Hall effect in AB-stacked MoTe2/WSe2 bilayers
Zui Tao, Bowen Shen, Wenjin Zhao +9
The spin Hall effect (SHE), in which electrical current generates transverse spin current, plays an important role in spintronics for the generation and manipulation of spin-polari…
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…
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…
Quantum oscillations in 2D insulators induced by graphite gates
Jiacheng Zhu, Tingxin Li, Andrea F. Young +2
We demonstrate a mechanism for magnetoresistance oscillations in insulating states of two-dimensional (2D) materials arising from the interaction of the 2D layer and proximal graph…
Quantum anomalous Hall effect from intertwined moiré bands
Tingxin Li, Shengwei Jiang, Bowen Shen +8
Electron correlation and topology are two central threads of modern condensed matter physics. Semiconductor moiré materials provide a highly tunable platform for studies of electro…
Continuous Mott transition in semiconductor moiré superlattices
Tingxin Li, Shengwei Jiang, Lizhong Li +9
The evolution of a Landau Fermi liquid into a nonmagnetic Mott insulator with increasing electronic interactions is one of the most puzzling quantum phase transitions in physics. T…
Charge-order-enhanced capacitance in semiconductor moiré superlattices
Tingxin Li, Jiacheng Zhu, Yanhao Tang +5
Van der Waals moiré materials have emerged as a highly controllable platform to study the electronic correlation phenomena. In particular, robust correlated insulating states have…
Stripe phases in WSe2/WS2 moiré superlattices
Chenhao Jin, Zui Tao, Tingxin Li +10
Stripe phases, in which the rotational symmetry of charge density is spontaneously broken, occur in many strongly correlated systems with competing interactions. One representative…
WSe2/WS2 moiré superlattices: a new Hubbard model simulator
Yanhao Tang, Lizhong Li, Tingxin Li +8
The Hubbard model, first formulated by physicist John Hubbard in the 1960s, is a simple theoretical model of interacting quantum particles in a lattice. The model is thought to cap…
Pressure-controlled interlayer magnetism in atomically thin CrI3
Tingxin Li, Shengwei Jiang, Nikhil Sivadas +9
Stacking order can significantly influence the physical properties of two-dimensional (2D) van der Waals materials. The recent isolation of atomically thin magnetic materials opens…
Anomalous Conductance Oscillations in the Hybridization Gap of InAs/GaSb Quantum Wells
Zhongdong Han, Tingxin Li, Long Zhang +2
We observe the magnetic oscillation of electric conductance in the two-dimensional InAs/GaSb quantum spin Hall insulator. Its insulating bulk origin is unambiguously demonstrated b…
Observation of the nonlinear anomalous Hall effect in 2D WTe2
Kaifei Kang, Tingxin Li, Egon Sohn +2
The Hall effect occurs only in systems with broken time-reversal symmetry, such as solids under an external magnetic field in the ordinary Hall effect and magnetic materials in the…
Transport evidence for three dimensional topological superconductivity in doped -PdBi
Ayo Kolapo, Tingxin Li, Pavan Hosur +1
Interest in topological states of matter exploded over a decade ago with the theoretical prediction and experimental detection of three-dimensional topological insulators, especial…
Microwave Photocurrent from the Helical Edge state of InAs/GaInSb Bilayers
Jie Zhang, Tingxin Li, Rui-Rui Du +1
We measure microwave photocurrent in devices made from InAs/GaInSb bilayers where both insulating bulk state and conducting edge state were observed in the inverted-band regime, co…
Low-Temperature Conductivity of Weakly Interacting Quantum Spin Hall Edges in Strained-Layer InAs/GaInSb
Tingxin Li, Pengjie Wang, Gerard Sullivan +2
We report low-temperature transport measurements in strained InAs/Ga0.68In0.32Sb quantum wells, which supports time-reversal symmetry-protected helical edge states. The temperature…
Tuning Edge States in Strained-Layer InAs/GaInSb Quantum Spin Hall Insulators
Lingjie Du, Tingxin Li, Wenkai Lou +8
We report on a class of quantum spin Hall insulators (QSHIs) in strained-layer InAs/GaInSb quantum wells, in which the bulk gaps are enhanced by up to five folds as compared to the…
Observation of a Helical Luttinger-Liquid in InAs/GaSb Quantum Spin Hall Edges
Tingxin Li, Pengjie Wang, Hailong Fu +8
We report on the observation of a helical Luttinger-liquid in the edge of InAs/GaSb quantum spin Hall insulator, which shows characteristic suppression of conductance at low temper…