38 citations · 179 across the 9 of their papers we have counts for
9 papers
Substrate-induced suppression of charge density wave in monolayer 1H-TaS2 on Au(111)
Heraclitos M. Lefcochilos-Fogelquist, Oliver R. Albertini, Amy Y. Liu
Recent experiments have found that monolayer 1H-TaS2 grown on Au(111) lacks the charge density wave (CDW) instability exhibited by bulk 2H-TaS2. Additionally, angle-resolved photoe…
Site-dependent magnetism of Ni adatoms on MgO/Ag(001)
Oliver R. Albertini, Amy Y. Liu, Barbara A. Jones
We examine the adsorption of a single Ni atom on a monolayer of MgO on a Ag substrate using DFT and DFT+U computational approaches. We find that the electronic and magnetic propert…
Nonequilibrium "melting" of a charge density wave insulator via an ultrafast laser pulse
W. Shen, Yizhi Ge, A. Y. Liu +3
We employ an exact solution of the simplest model for pump-probe time-resolved photoemission spectroscopy in charge-density-wave systems to show how, in nonequilibrium the gap in t…
Pulsed high harmonic generation of light due to pumped Bloch oscillations in noninteracting metals
J. K. Freericks, A. Y. Liu, A. F. Kemper +1
We derive a simple theory for high-order harmonic generation due to pumping a noninteracting metal with a large amplitude oscillating electric field. The model assumes that the rad…
Theoretical description of time-resolved pump/probe photoemission in TaS\_2: a single-band DFT+DMFT(NRG) study within the quasiequilibrium approximation
J. K. Freericks, H. R. Krishnamurthy, Yizhi Ge +2
In this work, we theoretically examine recent pump/probe photoemission experiments on the strongly correlated charge-density-wave insulator TaS\_2. We describe the general nonequil…
Unconventional superconducting pairing symmetry induced by phonons
I. Schnell, I. I. Mazin, Amy Y. Liu
The possibility of non-s-wave superconductivity induced by phonons is investigated using a simple model that is inspired by SrRuO. The model assumes a two-dimensional elect…