  Symmetry-breaking plays a pivotal role in unlocking intriguing properties and
functionalities in material systems. For example, the breaking of spatial and
temporal symmetries leads to a fascinating phenomenon of superconducting diode
effect. However, generating and precisely controlling the superconducting diode
effect poses significant challenges. Here, we take a novel route with
deliberate manipulation of magnetic charge potentials to realize unconventional
superconducting flux-quantum diode effects. We achieve this through suitably
tailored nanoengineered arrays of nanobar magnets on top of a superconducting
thin film. We demonstrate the vital roles of inversion antisymmetry and its
breaking in evoking unconventional superconducting effects-a magnetically
symmetric diode effect and an odd-parity magnetotransport effect. These effects
are non-volatilely controllable through in-situ magnetization switching of the
nanobar magnets. Our findings promote the use of antisymmetry (breaking) for
initiating unconventional superconducting properties, paving the way for
exciting prospects and innovative functionalities in superconducting
electronics.
