2.3k citations · 8.4k across the 31 of their papers we have counts for
22 papers · 1 filter
Observation of metastable chiral domain walls in a topological magnet
Richen Xiong, Chenxin Qin, Zhaoyu Han +17
The interplay between topology and correlation can give rise to exotic collective excitations. The integer and fractional quantum anomalous Hall (QAH) magnets recently discovered i…
Visualizing orbital magnetism in electron doped rhombohedral multilayer graphene
Owen I. Sheekey, Trevor B. Arp, Benjamin A. Foutty +24
Electron doped rhombohedral multilayer graphene at high displacement field features an exceptionally flat band minimum with near-ideal quantum geometry. Experiments in this regime…
Exciton-based sensing of remote electron correlations in 2D heterostructures
Tobias M. R. Wolf, Tian Xie, Chenhao Jin +1
Many monolayer transition metal dichalcogenides, including MoS, MoSe, WS, and WSe, are direct bandgap two-dimensional (2D) semiconductors with sharp optical resonan…
Propagating Collective Spin-valley Modes in Twisted WSe2
Richen Xiong, Yi Guo, Chenxin Qin +15
The emergence of neutral collective modes is a hallmark of correlated quantum phases but is often challenging to probe experimentally. In two-dimensional flatband systems, charge r…
Superconductivity and spin canting in spin-orbit proximitized rhombohedral trilayer graphene
Caitlin L. Patterson, Owen I. Sheekey, Trevor B. Arp +15
Graphene and transition metal dichalcogenide flat-band systems show similar phase diagrams, replete with magnetic and superconducting phases. An abiding question has been whether m…
Optical Imaging of Flavor Order in Flat Band Graphene
Tian Xie, Tobias M. Wolf, Siyuan Xu +15
Spin and valley flavor polarization plays a central role in the many-body physics of flat band graphene, with fermi surface reconstructions often accompanied by quantized anomalous…
Tunable exciton valley-pseudospin orders in moiré Bose-Hubbard model
Richen Xiong, Samuel L. Brantly, Kaixiang Su +9
Spin and charge are the two most important degrees of freedom of electrons. Their interplay lies at the heart of numerous strongly correlated phenomena including Hubbard model phys…
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…
Momentum-Dark Intervalley Exciton in Monolayer Tungsten Diselenide Brightened via Chiral Phonon
Zhipeng Li, Tianmeng Wang, Chenhao Jin +13
Inversion symmetry breaking and three-fold rotation symmetry grant the valley degree of freedom to the robust exciton in monolayer transition metal dichalcogenides (TMDCs), which c…
Imaging and control of critical spin fluctuations in two-dimensional magnets
Chenhao Jin, Zui Tao, Kaifei Kang +4
Strong spin fluctuations are expected near the thermodynamic critical point of a continuous magnetic phase transition. Such critical spin fluctuations are highly correlated and in…
Optical detection of Mott and generalized Wigner crystal states in WSe2/WS2 moiré superlattices
Emma C. Regan, Danqing Wang, Chenhao Jin +14
Moiré superlattices are emerging as a new route for engineering strongly correlated electronic states in two-dimensional van der Waals heterostructures, as recently demonstrated in…
Emerging Photoluminescence from the Dark-Exciton Phonon Replica in Monolayer WSe2
Zhipeng Li, Tianmeng Wang, Chenhao Jin +13
Tungsten-based monolayer transition metal dichalcogenides host a long-lived dark exciton, an electron-hole pair in a spin-triplet configuration. The long lifetime and unique spin p…
Resolving spin, valley, and moiré quasi-angular momentum of interlayer excitons in WSe2/WS2 heterostructures
Chenhao Jin, Emma C. Regan, Danqing Wang +11
Moiré superlattices provide a powerful way to engineer properties of electrons and excitons in two-dimensional van der Waals heterostructures. The moiré effect can be especially st…
Observation of Moiré Excitons in WSe2/WS2 Heterostructure Superlattices
Chenhao Jin, Emma C. Regan, Aiming Yan +10
Moiré superlattices provide a powerful tool to engineer novel quantum phenomena in two-dimensional (2D) heterostructures, where the interactions between the atomically thin layers…
Revealing the Biexciton and Trion-exciton Complexes in BN Encapsulated WSe2
Zhipeng Li, Tianmeng Wang, Zhengguang Lu +9
Strong Coulomb interactions in single-layer transition metal dichalcogenides (TMDs) result in the emergence of strongly bound excitons, trions and biexcitons. These excitonic compl…
Amplitude- and phase-resolved nano-spectral imaging of phonon polaritons in hexagonal boron nitride
Zhiwen Shi, Hans A. Bechte, Samuel Berweger +7
Phonon polaritons are quasiparticles resulting from strong coupling of photons with optical phonons. Excitation and control of these quasiparticles in 2D materials offer the opport…
Ultrafast Charge Transfer in Atomically Thin MoS2/WS2 Heterostructures
Xiaoping Hong, Jonghwan Kim, Su-Fei Shi +7
Van der Waals heterostructures have recently emerged as a new class of materials, where quantum coupling between stacked atomically thin two-dimensional (2D) layers, including grap…
Ultrafast Generation of Pseudo-magnetic Field for Valley Excitons in WSe2 Monolayers
Jonghwan Kim, Xiaoping Hong, Chenhao Jin +5
A new degree of freedom, the valley pseudospin, emerges in atomically thin two-dimensional transition metal dichalcogenides (MX2) and has attracted great scientific interest. The c…
Evolution of Interlayer Coupling in Twisted MoS2 Bilayers
Kaihui Liu, Liming Zhang, Ting Cao +7
Van der Waals (vdW) coupling is emerging as a powerful method to engineer and tailor physical properties of atomically thin two-dimensional (2D) materials. In graphene/graphene and…
Gate-dependent Pseudospin Mixing in Graphene/Boron Nitride Moire Superlattices
Zhiwen Shi, Chenhao Jin, Wei Yang +13
Electrons in graphene are described by relativistic Dirac-Weyl spinors with a two-component pseudospin1-12. The unique pseudospin structure of Dirac electrons leads to emerging phe…
Systematic Determination of Absolute Absorption Cross-section of Individual Carbon Nanotubes
Kaihui Liu, Xiaoping Hong, Sangkook Choi +9
Determination of optical absorption cross-section is always among the central importance of understanding a material. However its realization on individual nanostructures, such as…
High-throughput Imaging and Spectroscopy of Individual Carbon Nanotubes in Devices with Light Microscopy
Kaihui Liu, Xiaoping Hong, Qin Zhou +7
Two paramount challenges in carbon nanotube research are achieving chirality-controlled synthesis and understanding chirality-dependent device physics. High-throughput and in-situ…