20 citations · 30 across the 7 of their papers we have counts for
7 papers
Symmetry-selective nonrelativistic spin splitting in antiferromagnets driven by coherent phonons
Sangeeta Rajpurohit, Mohsen Yarmohammadi, Sheikh Rubaiat Ul Haque +3
Nonrelativistic spin splitting (NRSS) in antiferromagnets (AFMs) enables magnetization-free spin polarization for ultrafast spintronics. Here, we demonstrate that coherent phonons…
Photoinduced orbital polarization and Jahn-Teller effect in RNiO
Sangeeta Rajpurohit, Sheikh Rubaiat Ul Haque, Aaron M. Lindenberg +2
The orbital degree of freedom in rare-earth nickelates is typically inactive across the temperature-driven metal-insulator transition, where the system develops two inequivalent Ni…
Terahertz field-induced giant symmetry modulations in a van der Waals antiferromagnet
Sheikh Rubaiat Ul Haque, Martin J. Cross, Sangeeta Rajpurohit +19
Strong-field terahertz (THz) excitations enable dynamic control over electronic, lattice and symmetry degrees of freedom in quantum materials. Here, we uncover pronounced terahertz…
Nonresonant nonlinear magnonics in an antiferromagnet
Gu-Feng Zhang, Sheikh Rubaiat Ul Haque, Kelson J. Kaj +7
Antiferromagnets exhibit rapid spin dynamics in a net zero magnetic background which enables novel spintronic applications and interrogation of many-body quantum phenomena. The lay…
Terahertz parametric amplification as a reporter of exciton condensate dynamics
Sheikh Rubaiat Ul Haque, Marios H. Michael, Junbo Zhu +10
Condensates are a hallmark of emergence in quantum materials with superconductors and charge density wave as prominent examples. An excitonic insulator (EI) is an intriguing additi…
Theory of time-crystalline behaviour mediated by phonon squeezing in Ta2NiSe5
Marios H. Michael, Sheikh Rubaiat Ul Haque, Lukas Windgaetter +5
We theoretically investigate photonic time-crystalline behaviour initiated by optical excitation above the electronic gap of the excitonic insulator candidate .…
Generalized Fresnel-Floquet equations for driven quantum materials
Marios H. Michael, Michael Först, Daniele Nicoletti +5
Optical drives at terahertz and mid-infrared frequencies in quantum materials are increasingly used to reveal the nonlinear dynamics of collective modes in correlated many-body sys…