Research | Honglie Ning

Research interests

Strongly correlated materials, including d-orbital transition metal
oxides, exotic magnets, charge density wave materials, and unconventional superconductors

Topological materials, including Weyl/Dirac/nodal-line/chiral
semimetals, and topological superconductors

Experimental techniques

Projects

Strong-field dynamics including Floquet engineering, nonlinear carrier excitation, photo-induced phase transition, and nonperturbative Hamiltonian modulation

Development of state-of-the-art time-resolved X-ray, electron, and
optical spectroscopy

Ultrafast manipulation of order parameters in strongly correlated materials

Ultrafast reversal of the excitonic order in Ta2NiSe5 Excitonic insulator is a novel strongly correlated insulating phase where bound...

Nonequilibrium generation of exotic collective excitations

The excitons are traditionally bound via the long-range Coulomb interaction, akin to an electron bound to a proton in a hydrogen. To...

Development of microscopic and phenomenological theories

Selective amplification of collective excitations in excitonic insulator We have established a microscopic model to understand the...

Nonlinear carrier excitation and band modulation in strongly correlated materials

Nonlinear doublon-holon production and nonthermal dynamics in a strongly driven Mott insulator Ca2RuO4 The fate of a Mott insulator under...

Characterization and dynamics of the structure of topological materials

Ultrafast nonthermal restoration of higher crystalline symmetry in topological candidate elemental tellurium One route to the control of...

Development of state-of-the-art time-resolved optical and electronic spectroscopy

Construction of time- and angle-resolved photoemission spectroscopy Angle-resolved photoemission spectroscopy (ARPES) is able to directly...