| 摘要 |
<p>In the case of a nonvolatile memory using a resistance variation material, if crystalline and amorphous materials are mixed, the crystallization time is shortened, and the information-holding life is also shortened. Since the thermal conductivity of the material in contact with the resistance variation material is not high, the heat dissipation in rewriting is not quickly done, and the rewriting needs a long time. According to the invention, the contact area between the resistance variation material and the lower electrode is the same as the contact area with the upper electrode, and the current path is uniform. A material having a high thermal conductivity is so provided as to be in contact with the side wall of the resistance variation material, and its end portion is also in contact with the lower electrode.</p> |
