Clemens Kuhlenkamp

Abstract Heterostructures of two-dimensional transition metal dichalcogenides are emerging as a promising platform for investigating exotic correlated states of matter. Here, we propose to engineer Bose-Fermi mixtures in these systems by coupling interlayer excitons to doped charges in a trilayer structure. Their interactions are determined by the interlayer trion, whose spin-selective nature allows excitons to mediate an attractive interaction between charge carriers of only one spin species.

Spin-ordered states close to metal-insulator transitions are poorly understood theoretically and challenging to probe in experiments. Here, we propose that the quantum twisting microscope, which provides direct access to the energy-momentum resolved spectrum of single-particle and collective excitations, can be used as a novel tool to distinguish between different types of magnetic order.

Popular Summary Spin liquids are exotic quantum phases in which the electron spins do not settle into any order when cooled—rather, they continue to fluctuate. This in turn leads to unusual properties like fractionalized charges and closely connects these states to fundamental theories of nature, such as electromagnetism. Furthermore, spin liquids have the potential to provide a basis for robust quantum computations.