Monomolecular transistor

A monomolecular transistor comprising:

• a first electrode including a first electrode layer and a first metal particle arranged at a tip portion of the first electrode layer;
• a second electrode including a second electrode layer and a second metal particle arranged at a tip portion of the second electrode layer;
• a third electrode insulated from the first electrode and the second electrode;
• a π-conjugated molecule having a π-conjugated skeleton;
• the first electrode and the second electrode are arranged so that the first metal particle and the second metal particle face each other and are separated from each other;
• the first electrode layer has a uniform width of 20 nm or less including the tip portion of the first electrode layer and a film thickness of 20 nm or less;
• the second electrode layer has a uniform width of 20 nm or less including the tip portion of the second electrode layer and a film thickness of 20 nm or less;
• a width of the first metal particle and the second metal particle from a first end to a second end is less than 20 nm;
• the third electrode is arranged adjacent to a gap in which the first metal particle and the second metal particle face each other, and is spaced from the first metal particle and the second metal particle;
• and
• the π-conjugated molecule is arranged in a gap between the first metal particle and the second metal particle.