306 citations · 1.7k across the 34 of their papers we have counts for
34 papers
Occupation Dynamics of Floquet-Volkov States and Spectral Sum Rule
Xuanxi Cai, Changhua Bao, Benshu Fan +9
Time-periodic light fields can dress electronic states in quantum materials, forming Floquet states whose dynamic occupation determines transient material properties. Here by using…
Floquet engineering enabled by charge density wave transition
Fei Wang, Xuanxi Cai, Teng Xiao +10
Floquet engineering has emerged as a powerful approach for dynamically tailoring the electronic structures of quantum materials through time-periodic light fields generated by ultr…
High harmonic generation light source with polarization selectivity and sub-100-m beam size for time- and angle-resolved photoemission spectroscopy
Haoyuan Zhong, Xuanxi Cai, Changhua Bao +9
High-quality ultrafast light sources are critical for developing advanced time- and angle-resolved photoemission spectroscopy (TrARPES). While the application of high harmonic gene…
Interaction effects on electronic Floquet spectra: Excitonic effects
Teng Xiao, Tsan Huang, Changhua Bao +1
Floquet engineering of electronic states by light is a central topic in modern experiments. However, the impact of many-body interactions on the single-electron properties remains…
Light-field dressing of transient photo-excited states above
Fei Wang, Wanying Chen, Changhua Bao +4
Time-periodic light-field provides an emerging pathway for dynamically engineering quantum materials by forming hybrid states between photons and Bloch electrons. So far, experimen…
Giant Rashba splitting in PtTe/PtTe heterostructure
Runfa Feng, Yang Zhang, Jiaheng Li +11
Achieving a large spin splitting is highly desirable for spintronic devices, which often requires breaking of the inversion symmetry. However, many atomically thin films are centro…
Floquet-Volkov interference in a semiconductor
Changhua Bao, Haoyuan Zhong, Benshu Fan +9
Intense light-field can dress both Bloch electrons inside crystals and photo-emitted free electrons in the vacuum, dubbed as Floquet and Volkov states respectively. These quantum s…
Light-induced ultrafast glide-mirror symmetry breaking in black phosphorus
Changhua Bao, Fei Wang, Haoyuan Zhong +6
Symmetry breaking plays an important role in fields of physics, ranging from particle physics to condensed matter physics. In solid-state materials, phase transitions are deeply li…
Manipulating the symmetry of photon-dressed electronic states
Changhua Bao, Michael Schüler, Teng Xiao +11
Strong light-matter interaction provides opportunities for tailoring the physical properties of quantum materials on the ultrafast timescale by forming photon-dressed electronic st…
Correlated topological flat bands in rhombohedral graphite
Hongyun Zhang, Qian Li, Michael G. Scheer +22
Flat bands and nontrivial topological physics are two important topics of condensed matter physics. With a unique stacking configuration analogous to the Su-Schrieffer-Heeger (SSH)…
Ultrafast Carrier Relaxation Dynamics in a Nodal-Line Semimetal PtSn
Tianyun Lin, Yongkang Ju, Haoyuan Zhong +7
Topological Dirac nodal-line semimetals host topologically nontrivial electronic structure with nodal-line crossings around the Fermi level, which could affect the photocarrier dyn…
Observation of dichotomic field-tunable electronic structure in twisted monolayer-bilayer graphene
Hongyun Zhang, Qian Li, Youngju Park +18
Twisted bilayer graphene (tBLG) provides a fascinating platform for engineering flat bands and inducing correlated phenomena. By designing the stacking architecture of graphene lay…
Hidden charge density wave induced shadow bands and ultrafast dynamics of CuTe investigated using time-resolved ARPES
Haoyuan Zhong, Changhua Bao, Tianyun Lin +4
Revealing the fine electronic structure is critical for understanding the underlying physics of low-dimensional materials. Angle-resolved photoemission spectroscopy (ARPES) is a po…
Evolution of flat band and role of lattice relaxations in twisted bilayer graphene
Qian Li, Hongyun Zhang, Yijie Wang +15
Magic-angle twisted bilayer graphene (MATBG) exhibits correlated phenomena such as superconductivity and Mott insulating state related to the weakly dispersing flat band near the F…
Floquet engineering of black phosphorus upon below-gap pumping
Shaohua Zhou, Changhua Bao, Benshu Fan +6
Time-periodic light field can dress the electronic states and lead to light-induced emergent properties in quantum materials. While below-gap pumping is regarded favorable for Floq…
Ionic liquid gating induced self-intercalation of transition metal chalcogenides
Fei Wang, Yang Zhang, Zhijie Wang +6
Ionic liquids provide versatile pathways for controlling the structures and properties of quantum materials. Previous studies have reported electrostatic gating of nanometre-thick…
Distinguishing and controlling Mottness in 1T-TaS by ultrafast light
Changhua Bao, Haoyuan Zhong, Fei Wang +5
Distinguishing and controlling the extent of Mottness is important for materials where the energy scales of the onsite Coulomb repulsion U and the bandwidth W are comparable. Here…
Pseudospin-selective Floquet band engineering in black phosphorus
Shaohua Zhou, Changhua Bao, Benshu Fan +10
Time-periodic light field has emerged as a control knob for manipulating quantum states in solid-state materials, cold atoms and photonic systems via hybridization with photon-dres…
Light-induced emergent phenomena in 2D materials and topological materials
Changhua Bao, Peizhe Tang, Dong Sun +1
Light-matter interaction in 2D and topological materials provides a fascinating control knob for inducing emergent, non-equilibrium properties and achieving new functionalities in…
A newly-designed femtosecond KBeBOF device with pulse duration down to 55 fs for time- and angle-resolved photoemission spectroscopy
Haoyuan Zhong, Changhua Bao, Tianyun Lin +2
Developing a widely tunable vacuum ultraviolet (VUV) source with sub-100 femtoseconds (fs) pulse duration is critical for ultrafast pump-probe techniques such as time- and angle-re…
Population inversion and Dirac fermion cooling in 3D Dirac semimetal CdAs
Changhua Bao, Qian Li, Sheng Xu +8
Revealing the ultrafast dynamics of three-dimensional (3D) Dirac fermions upon photoexcitation is critical for both fundamental science and device applications. So far, how the coo…
Ultrafast time- and angle-resolved photoemission spectroscopy with widely tunable probe photon energy of 5.3-7.0 eV for investigating dynamics of three-dimensional materials
Changhua Bao, Haoyuan Zhong, Shaohua Zhou +3
Time- and angle-resolved photoemission spectroscopy (TrARPES) is a powerful technique for capturing the ultrafast dynamics of charge carriers and revealing photo-induced phase tran…
Spatially-resolved electronic structure of stripe domains in IrTe through electronic structure microscopy
Changhua Bao, Hongyun Zhang, Qian Li +11
Phase separation in the nanometer- to micrometer-scale is characteristic for correlated materials, for example, high temperature superconductors, colossal magnetoresistance mangani…
Robust charge-density wave strengthened by electron correlations in monolayer 1T-TaSe2 and 1T-NbSe2
Yuki Nakata, Katsuaki Sugawara, Ashish Chainani +11
Combination of low-dimensionality and electron correlation is vital for exotic quantum phenomena such as the Mott-insulating phase and high-temperature superconductivity. Transitio…