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Yasuyuki NAKATA Masahiro ASADA Yasuharu SUEMATSU Mitsunobu SATO
From the analysis of layer number dependence of response time and current gain, there is a tendency that with decreasing layer number, response time becomes higher and current gain becomes larger. The current gain band-width product , is estimated theoretically to be 640 GHz (current gain is to be 34), when metal layer number is one and layer thickness is 10 Å.