The Climbing Magnets Mystery (ft. Steve Mould)

very nice basic explanation of the phenomenom

https://www.youtube.com/watch?v=k0oNkO2YI-w

Discrete acoustic emission waves during stick–slip friction between steel samples

The onset of frictional slip has always been somewhat difficult to study due to the fact that access to the contact area is almost impossible and in most cases only indirect measurements can be carried out. In this report the acoustic emission (AE) technique was used to record and study the elastic waves that appear during the transition from static to kinetic friction in a stick–slip experiment carried out using a sheet of soft steel and a clamp of quenched steel.

https://www.sciencedirect.com/science/article/pii/S0301679X09000395

Frictional weakening of slip interfaces

Investigation about static and dynamic friction and its dependence of the real contact area and show that it actually increases during macroscopic slip.

https://www.science.org/doi/10.1126/sciadv.aav7603

Origin and Characterization of Different Stick−Slip Friction Mechanisms

Mechanical parts often move, not smoothly, but in jerks known as stick−slip. Stick−slip motion may be regular (repetitive or periodic) or irregular (erratic or intermittent). In the case of frictional sliding, stick−slip can have serious and often undesirable consequencesresulting in noise (chatter), high energy loss (friction), surface damage (wear), and component failure. They review the origins of stick−slip friction and present new experimental results on model surfaces that clarify its different origins, its dependence on experimental conditions or “system parameters”, and how stick−slip can be controlled in practical situations.

https://pubs.acs.org/doi/10.1021/la950896z