Nonlocal Response Mediated by Weyl Orbits*

Nonlocality is always an interesting topic in quantum physics and is usually mediated by some unique quantum states. Nonlocal phenomena in three dimensional systems mediated by trivial bulk states are rarely reported however. Here we investigate a Weyl semimetal slab and find an exotic nonlocal correlation effect when placing two potential wells merely on the top and bottom surfaces. This nonlocal response is totally carried by the bulk states inside the Weyl orbit, which is a result of the peculiar band structure of Weyl semimetals. A giant nonlocal transport signal and a body breakdown by the Weyl fermions are further uncovered, which can serve as signatures for verifying this nonlocal phenomenon experimentally. Our results extend a new member in the nonlocality family and have potential applications for designing new electric devices with fancy functions.