Time-resolved ARPES studies of quantum materials
Angle-resolved photoemission spectroscopy (ARPES), with its exceptional sensitivity to both
the binding energy and the momentum of valence electrons in solids, provides unparalleled …
the binding energy and the momentum of valence electrons in solids, provides unparalleled …
Light-Tunable Surface State and Hybridization Gap in Magnetic Topological Insulator MnBi8Te13
MnBi8Te13 is an intrinsic ferromagnetic (FM) topological insulator with different complex
surface terminations. Resolving the electronic structures of different termination surfaces and …
surface terminations. Resolving the electronic structures of different termination surfaces and …
Time-and angle-resolved photoemission studies of quantum materials
Angle-resolved photoemission spectroscopy (ARPES)--with its exceptional sensitivity to both
the binding energy and momentum of valence electrons in solids--provides unparalleled …
the binding energy and momentum of valence electrons in solids--provides unparalleled …
Optical manipulation of Rashba-split 2-dimensional electron gas
In spintronics, the two main approaches to actively control the electrons' spin involve static
magnetic or electric fields. An alternative avenue relies on the use of optical fields to …
magnetic or electric fields. An alternative avenue relies on the use of optical fields to …
[HTML][HTML] Room temperature persisting surface charge carriers driven by intense terahertz electric fields in a topological insulator Bi2Se3
Topologically protected surface current is highly promising for next-generation low-
dissipation and disorder-tolerant quantum electronics and computing. Yet, electric transport …
dissipation and disorder-tolerant quantum electronics and computing. Yet, electric transport …
Time-Resolved Second-Harmonic Generation in Topological Insulator Bi2Te3: Competing Contributions from Dirac Surface States, Surface Photovoltage, and Band …
Nonlinear optical experiments, especially the second-harmonic generation (SHG) of
topological insulators (TIs) such as Bi2Te3 and Bi2Se3, provide significant insights into the …
topological insulators (TIs) such as Bi2Te3 and Bi2Se3, provide significant insights into the …
Dynamics of the Bulk-to-Topological State Scattering of Photoexcited Carriers in Bi2Se3 Thin Films
Carrier dynamics in polycrystalline Bi2Se3 topological insulator thin films were investigated
by femtosecond transient absorption spectroscopy (FTAS) at 77 K, by using an infrared …
by femtosecond transient absorption spectroscopy (FTAS) at 77 K, by using an infrared …
Ultrafast probes of photovoltage and two-dimensional electron gas in the topological insulator by angle-resolved photoemission and terahertz spectroscopy
Photoexcited carriers in three-dimensional topological insulators (3D TIs) decay rapidly
through the electron-electron and electron-phonon scattering. While most studies focus on …
through the electron-electron and electron-phonon scattering. While most studies focus on …
Driving ultrafast spin and energy modulation in quantum well states via photo-induced electric fields
The future of modern optoelectronics and spintronic devices relies on our ability to control
the spin and charge degrees of freedom at ultrafast timescales. Rashba spin-split quantum …
the spin and charge degrees of freedom at ultrafast timescales. Rashba spin-split quantum …
Terahertz-driven hot Dirac fermion and plasmon dynamics in the bulk-insulating topological insulator
For degenerately doped three-dimensional topological insulators (3D TIs), the interaction
dynamics between Dirac fermions and collective charge oscillations (plasmons) are …
dynamics between Dirac fermions and collective charge oscillations (plasmons) are …