Magnetic memory device

A magnetic memory device, comprising:

• a conductive member including a first portion, a second portion, and a third portion between the first portion and the second portion;
• a plurality of element portions;
• and
• a controller,
• one of the plurality of element portions including a first element, a first interconnect, and a first circuit,
• the first element including
• a first magnetic layer,
• a first counter magnetic layer provided between the third portion and the first magnetic layer, and
• a first nonmagnetic layer provided between the first counter magnetic layer and the first magnetic layer,
• the first elements of the plurality of element portions being arranged along a direction from the first portion toward the second portion,
• the first interconnect being electrically connected to the first magnetic layer,
• the first circuit being electrically connected to the first interconnect,
• the first circuit including a first switch, a first capacitance element, a first parallel switch, and a first parallel capacitance element,
• one end of the first switch being electrically connected to the first interconnect,
• an other end of the first switch being electrically connected to one end of the first capacitance element,
• one end of the first parallel switch being electrically connected to the first interconnect,
• an other end of the first parallel switch being electrically connected to one end of the first parallel capacitance element,
• the controller performing at least a first current supply operation,
• in the first current supply operation, the controller setting the first switch to a conducting state and supplying a first current to the conductive member from the first portion toward the second portion.

A magnetic memory device, comprising:

• a conductive member including a first portion, a second portion, and a third portion between the first portion and the second portion;
• a plurality of element portions;
• and
• a controller,
• one of the plurality of element portions including a first element, a first interconnect, and a first circuit,
• the first element including
• a first magnetic layer,
• a first counter magnetic layer provided between the third portion and the first magnetic layer, and
• a first nonmagnetic layer provided between the first counter magnetic layer and the first magnetic layer,
• the first elements of the plurality of element portions being arranged along a direction from the first portion toward the second portion,
• the first interconnect being electrically connected to the first magnetic layer,
• the first circuit being electrically connected to the first interconnect,
• the first circuit including a first switch, a first capacitance element, a first parallel switch, a first parallel capacitance element, and a first detection circuit,
• one end of the first switch being electrically connected to the first interconnect,
• an other end of the first switch being electrically connected to one end of the first capacitance element,
• one end of the first parallel switch being electrically connected to the first interconnect,
• an other end of the first parallel switch being electrically connected to one end of the first parallel capacitance element,
• the first detection circuit being electrically connected to the one end of the first capacitance element and the one end of the first parallel capacitance element,
• the controller performing at least a first detection operation, a current supply operation after the first detection operation, and a second detection operation after the current supply operation,
• in the first detection operation, the controller setting the first switch to the conducting state and setting the first parallel switch to a nonconducting state,
• in the current supply operation, the controller supplying a current to the conductive member from the second portion toward the first portion,
• in the second detection operation, the controller setting the first parallel switch to the conducting state and setting the first switch to the nonconducting state,
• the first detection circuit being configured to output a signal corresponding to a difference between a potential of the one end of the first capacitance element after the first detection operation and a potential of the one end of the first parallel capacitance element after the second detection operation.