Recent highlights of projects by the TIQM community
An index of publications will be coming soon
TIQM researchers have observed the fractionally quantized Hall effect (with a fractional Chern number) at zero magnetic field for the first time. The experimental system they use is twisted bilayer 2D semiconductor MoTe2.
E Anderson et al, Science 381, 325 (2023) J Cai et al, Nature (2023)
H Park et al, Nature (2023) UW News Quanta Magazine
Though ancient, graphite still has the capacity to surprise. By twisting a single sheet of graphene within a bulk graphite thin film, TIQM researchers created a new class of moiré materials with mixed 2- and 3-dimensional properties.
D Waters et al, Nature (2023)
UW News IEEE Spectrum Chemistry World Physics World
TIQM researchers invented a new integrated LiDAR technology enabled by a chip-scale acousto-optic beam-steering device. The simplicity and low cost of the new method make it a promising technology.
TIQM researchers discovered that laser light can trigger magnetism in a normally nonmagnetic material.
X Wang et al, Nature 604, 468 (2022) UW News
Journal Club for Condensed Matter Physics
In a first proof-of-concept work, the nonlinear dynamics resulting from feedback of plasmonic internal fields onto electronic band structure was explored. Remarkably, this feedback can lead to spontaneous non-equilibrium magnetism that is both driven by and helps to sustain a non-vanishing Berry flux that emerges in the steady state.
MS Rudner and J Song, Nature Physics 15, 1017 (2019)
News and Views: A sudden twist Featured on Phys.org
A long-standing open question on the evolution of dynamically localized states in the presence of many-body interactions was experimentally studied using a one-dimensional ultracold gas periodically kicked by a pulsed optical lattice. Researchers observed the interaction-driven emergence of dynamical delocalization and the onset of many-body quantum chaos.
J. See Toh et al. Nature Physics 18, 1297 (2022)
News & Views: Kicked Rotors Back in Action
Using high quality-factor silicon photonic resonators, researchers simulated topological Hamiltonian. By probing every super-mode, they explored the utility of such a platform to create topological bath for quantum simulation.
A new type of electron-mediated pumping of heat was proposed in which the transfer of heat is not accompanied by charge transfer or a voltage build-up, offering advantages over traditional thermoelectric cooling setups. This pumping may be realized in charge-neutral electron systems, such as graphene, coupled to an external electric potential, such as can be generated by a travelling surface acoustic wave.