Electron pockets in the Fermi surface of hole-doped high-Tc superconductors
Ultrafast manipulation of mirror domain walls in a charge density wave
Topological defects, potential information carriers, were written into and erased from a solid with femtosecond light pulses. , Domain walls (DWs) are singularities in an ordered medium that often host exotic phenomena such as charge ordering, insulator-metal transition, or superconductivity. The ability to locally write and erase DWs is highly desirable, as it allows one to design material functionality by patterning DWs in specific configurations.
Strong increase in ultrasound attenuation below $T_c$ in $\mathrmSr_2\mathrmRuO_4$: Possible evidence for domains
Piezomagnetic switching of the anomalous Hall effect in an antiferromagnet at room temperature
Angle dependence of quantum oscillations in YBa2Cu3O6.59 shows free-spin behaviour of quasiparticles
Broken rotational symmetry in the pseudogap phase of a high-Tc superconductor
Calorimetric measurement of nuclear spin-lattice relaxation rate in metals
Energy-scale competition in the Hall resistivity of a strange metal
Nanocalorimetry using microscopic optical wireless integrated circuits
We present in situ calorimetry, thermal conductivity, and thermal diffusivity measurements of materials using temperature-sensing optical wireless integrated circuits (OWiCs). These microscopic and untethered optical sensors eliminate input wires and reduce parasitic effects. Each OWiC has a mass of ∼100 ng, a 100-μm-scale footprint, and a thermal response time of microseconds. We demonstrate that they can measure the thermal properties of nearly any material, from aerogels to metals, on samples as small as 100 ng and over thermal diffusivities covering four orders of magnitude.