Magnetic recording and reproducing device having magnetic head with first and second reproducing element portions and magnetic reproducing method

A magnetic recording and reproducing device, comprising:

• a magnetic recording medium;
• a magnetic head including a first reproducing element portion and a second reproducing element portion;
• and
• a processor configured to acquire a first signal and a second signal, and to output an output signal according to either one of the first signal and the second signal, the first signal being obtained by reproducing information recorded on a first recording region by the first reproducing element portion, the second signal being obtained by reproducing the information recorded on the first recording region by the second reproducing element portion,
• wherein
• the first reproducing element portion includes:
• a first electrode,
• a second electrode apart from the first electrode in a first direction,
• a first signal detecting portion provided between the first electrode and the second electrode, and
• a first side shield, at least a part of the first side shield overlapping the first signal detecting portion in a second direction crossing the first direction,
• the second reproducing element portion includes:
• a third electrode,
• a fourth electrode apart from the third electrode in the first direction,
• a second signal detecting portion provided between the third electrode and the fourth electrode, and
• a second side shield, at least a part of the second side shield overlapping the second signal detecting portion in the second direction, a direction connecting the first electrode and the third electrode being along the first direction,
• the second electrode includes a first non-magnetic metal layer, and
• the fourth electrode includes a second non-magnetic metal layer.