Tag Archives: conductivity

When things don’t make sense in the quantum realm, scientists don’t always get to find a good explanation for what they’re seeing. Many times, they arrive at a solution by accident—something that usually begins with the realization that a weird signal is not a wrong signal. Researchers had known about an odd phenomenon in which an initially conductive material seemingly …

Device fabrication We fabricated our devices using procedures similar to those described in ref. 22. A free-standing silicon nitride (SiN) membrane was used as a substrate for our van der Waals assembly that involved four atomically flat crystals (Extended Data Fig. 1). We started with etching a rectangular aperture of approximately 3 × 20 μm2 in the SiN membrane. This aperture was required to …