Single-electron transistor

<p>A single-electron transistor (SET) is a sensitive electronic device based on the <a href="/facts/Coulomb_blockade/VhPbFaL9">Coulomb blockade</a> effect. In this device the electrons flow through a tunnel junction between source/drain to a <a href="/facts/Quantum_dot/K5Ytv8Yw">quantum dot</a> (conductive island). Moreover, the electrical potential of the island can be tuned by a third electrode, known as the gate, which is capacitively coupled to the island. The conductive island is sandwiched between two tunnel junctions modeled by capacitors, 
  
    
      
        
          C
          
            
              D
            
          
        
      
    
    {\displaystyle C_{\rm {D}}}
  
 and 
  
    
      
        
          C
          
            
              S
            
          
        
      
    
    {\displaystyle C_{\rm {S}}}
  
, and resistors, 
  
    
      
        
          R
          
            
              D
            
          
        
      
    
    {\displaystyle R_{\rm {D}}}
  
 and 
  
    
      
        
          R
          
            
              S
            
          
        
      
    
    {\displaystyle R_{\rm {S}}}
  
, in parallel.
</p>

Single-electron transistor open-in-new

Single-electron transistor