 the second conductive member and an upper portion of the first conductive member, a resistivity of the first conductive member in the first direction being lower than a resistivity of the first conductive member in the stacking direction, a resistance value of the first conductive member in the stacking direction changing, and a resistivity of the second conductive member in the second direction being lower than a resistivity of the second conductive member in the stacking direction, a resistance value of the second conductive member in the stacking direction changing.  0. The device according to claim 0, wherein: the first conductive member and the second conductive member are made of a nanomaterial including an aggregation of a plurality of micro conductive bodies extending in one direction; the number of the micro conductive bodies extending in the first direction is greater than the number of the micro conductive bodies extending in the stacking direction in the first conductive member; and the number of the micro conductive bodies extending in the second direction is greater than the number of the micro conductive bodies extending in the stacking direction in the second conductive member.  0. The device according to claim 0, wherein: the first conductive member has a plurality of layers stacked in the stacking direction, and the second conductive member has a plurality of layers stacked in the stacking direction; extension directions of the micro conductive bodies are mutually the same within each of the layers; the micro conductive bodies extend in the first direction in at least one layer of the plurality of layers of the first conductive member; and the micro conductive bodies extend in the second direction in at least one layer of the plurality of layers of the second conductive member.  00. The device according to claim 0, wherein the micro conductive body is a carbon nanotube.  00. The device according to claim 0, further comprising a selection element layer controlling an amount of current flowing between the first conductive member and the second conductive member based on a voltage between the first conductive member and the second conductive member, the selection element layer being 