Storage device and method for manufacturing storage device
A storage device includes a first conductor that extends in a first direction, a first stacked body that extends in the first direction, is electrically connected to the first conductor, and includes a first ferromagnetic body that extends in the first direction, a second ferromagnetic body, a first insulator between the first stacked body and the second ferromagnetic body, a first switching element having first and second ends, wherein the first end is electrically connected to the second ferromagnetic body, the first switching element regulating current flow between the first and second ends in response to a voltage applied between the first and second ends, a second conductor that extends in a second direction crossing the first direction and is electrically connected to the second end of the first switching element, a third ferromagnetic body, and a second insulator between the third ferromagnetic body and another stacked body.
1. A storage device comprising:
a first conductor that extends in a first direction;
a first stacked body that extends in the first direction, is disposed on the first conductor to be electrically connected thereto, and includes a first ferromagnetic body that extends in the first direction;
a first switching element having a first end and a second end and extending in a second direction crossing the first direction, the first switching element regulating current flow between the first end and the second end in response to a voltage applied between the first end and the second end;
a second conductor that extends in the second direction and is disposed on the first switching element to be electrically connected to the second end of the first switching element;
a second ferromagnetic body between the first switching element and the first stacked body;
a first insulator between the first stacked body and the second ferromagnetic body;
a third conductor that extends in the first direction in parallel to the first conductor;
a second stacked body that extends in the first direction and is disposed on the third conductor to be electrically connected thereto;
a third ferromagnetic body between the first switching element and the second stacked body; and
a second insulator between the second stacked body and the third ferromagnetic body.
2. The storage device according to claim 1 ,
wherein the first stacked body includes
a fourth conductor that extends in the first direction and is electrically connected to the first ferromagnetic body, and
a fourth ferromagnetic body that extends in the first direction and is electrically connected to the fourth conductor.
3. The storage device according to claim 1 ,
wherein the first stacked body is above the first conductor,
wherein the first insulator is above the first stacked body,
wherein the second ferromagnetic body is above the first insulator,
wherein the first switching element is above the second ferromagnetic body, and
wherein the second conductor is above the first switching element.
4. The storage device according to claim 1 ,
wherein the first switching element includes a variable resistance material that extends in the second direction.
5. The storage device according to claim 4 , wherein the variable resistance material
interrupts the current flow from the first end to the second end when a voltage less than a first threshold voltage is applied across the first end to the second end,
allows the current to flow from the first end to the second end when a voltage equal to or greater than the first threshold voltage is applied across the first end to the second end,
interrupts the current flow from the second end to the first end when a voltage less than a second threshold voltage is applied across the second end to the first end, and
allows the current to flow from the second end to the first end when a voltage equal to or greater than the second threshold voltage is applied across the second end to the first end.
6. The storage device according to claim 1 , further comprising:
a second switching element having a third end and a fourth end and extending in the second direction,
the second switching element regulating current flow between the third end and the fourth end in response to a voltage applied between the third end and the fourth end; and
a fifth conductor that extends in the second direction and is disposed on the first switching element to be electrically connected to the fourth end of the second switching element;
a fifth ferromagnetic body between the second switching element and the first stacked body;
a third insulator between the first stacked body and the fifth ferromagnetic body;
a sixth ferromagnetic body between the second switching element and the second stacked body; and
a fourth insulator between the second stacked body and the sixth ferromagnetic body.
7. A storage device comprising:
a plurality of first conductors extending in a first direction and spaced apart in a second direction crossing the first direction;
a plurality of stacked bodies that extend in the first direction, are respectively disposed on the plurality of first conductors to be electrically connected thereto, and respectively include a first ferromagnetic body that extends in the first direction;
a plurality of switching elements extending in the second direction and spaced apart in the first direction, each of the switching elements having a first end and a second end, and regulating current flow between the first end and the second end in response to a voltage applied between the first end and the second end;
a plurality of second conductors that extend in the second direction and are respectively disposed on the plurality of switching elements to be electrically connected to the second end thereof;
a plurality of second ferromagnetic bodies, each of which is between one of the switching elements and one of the stacked bodies; and
a plurality of insulators, each of which is between one of the stacked bodies and one of the second ferromagnetic bodies.
8. The storage device according to claim 7 ,
wherein each of the stacked bodies includes
a third conductor that extends in the first direction and is electrically connected to one of the first ferromagnetic bodies, and
a third ferromagnetic body that extends in the first direction and is electrically connected to the third conductor.
9. The storage device according to claim 7 ,
wherein each of the switching elements includes a variable resistance material that extends in the second direction.
10. The storage device according to claim 9 , wherein the variable resistance material
interrupts the current flow from the first end to the second end when a voltage less than a first threshold voltage is applied across the first end to the second end,
allows the current to flow from the first end to the second end when a voltage equal to or greater than the first threshold voltage is applied across the first end to the second end,
interrupts the current flow from the second end to the first end when a voltage less than a second threshold voltage is applied across the second end to the first end, and
allows the current to flow from the second end to the first end when a voltage equal to or greater than the second threshold voltage is applied across the second end to the first end.