266 citations · 1.6k across the 54 of their papers we have counts for
55 papers
Localization and spectrum of quasiparticles in a disordered fermionic Dicke model
Sebastian Stumper, Junichi Okamoto
We study a fermionic two-band model with the interband transition resonantly coupled to a cavity. This model was recently proposed to explain cavity-enhanced charge transport, but…
Exciton dynamics uncovering electron fractionalization in superconducting cuprates
A. Singh, H. Y. Huang, J. D. Xie +6
Electron quasiparticles play a crucial role in simplifying the description of many-body physics in solids with surprising success. Conventional Landau's Fermi-liquid and quasiparti…
Photoinduced intradomain dynamics and nonthermal switching of metastable states in the one-dimensional extended Peierls-Hubbard model
Junichi Okamoto, Sajad Mirmohammadi
We investigate the microscopic dynamics at the initial stage of photoinduced phase transitions in tetrathiafulvalene--chloranil by exact diagonalization. We first show that the…
Magnetic Properties and Electronic Configurations of Mn Ions in the Diluted Magnetic Semiconductor BaK(ZnMn)As Studied by X-ray Magnetic Circular Dichroism and Resonant Inelastic X-ray Scattering
H. Suzuki, G. Q. Zhao, J. Okamoto +18
The magnetic properties and the electronic excitations of the new diluted magnetic semiconductor BaK(ZnMn)As have been studied by x-ray magn…
Quantum fluctuations of charge order induce phonon softening in a superconducting cuprate
H. Y. Huang, A. Singh, C. Y. Mou +13
Quantum phase transitions play an important role in shaping the phase diagram of high-temperature cuprate superconductors. These cuprates possess intertwined orders which interact…
Interaction-driven dynamical quantum phase transitions in a strongly correlated bosonic system
Sebastian Stumper, Michael Thoss, Junichi Okamoto
We study dynamical quantum phase transitions (DQPTs) in the extended Bose-Hubbard model after a sudden quench of the nearest-neighbor interaction strength. Using the time-dependent…