NONVOLATILE SEMICONDUCTOR STORAGE DEVICE AND OPERATION METHOD OF THE SAME

摘要

PROBLEM TO BE SOLVED: To improve durability in rewriting, data retention characteristic and a resistance ratio between ON/OFF states while achieving a low-current operation.SOLUTION: A nonvolatile semiconductor storage device according to the present embodiment comprises: a semiconductor substrate; and memory cells which are arranged on the semiconductor substrate and include variable resistive elements, respectively. The variable respective element includes a lamination structure composed of a phase change element which has at least two resistive states different from each other by making a crystal condition variable and a magnetoresistance effect element which has at least two resistive states different from each other by making a magnetization state variable and which applies or does not apply a magnetic field to the phase change element depending on the magnetization state.