Magnetic array, magnetic array control method, and magnetic array control program

A magnetic array comprising:

• a plurality of magnetoresistance effect elements;
• and
• a pulse application device which applies a pulse to each of the plurality of magnetoresistance effect elements,
• wherein each of the plurality of magnetoresistance effect elements includes a domain wall motion layer, a ferromagnetic layer, and a non-magnetic layer sandwiched between the domain wall motion layer and the ferromagnetic layer,
• wherein the pulse application device is configured to apply an initialization pulse and an operation pulse to each of the plurality of magnetoresistance effect elements,
• wherein the initialization pulse has a first pulse that is applied a plurality of times to widen a distribution of resistance values of the plurality of magnetoresistance effect elements from an initial distribution, and
• wherein the first pulse is applied to each of the plurality of magnetoresistance effect elements under a condition that a probability that a resistance value of each magnetoresistance effect element changes when the first pulse is applied to each magnetoresistance effect element is larger than 0% and smaller than 100%,
• wherein the operation pulse is applied to a predetermined magnetoresistance effect element after the initialization pulse under a condition that a probability that a resistance value of the predetermined magnetoresistance effect element changes is 100%.