Giant Photovoltaic Effects Driven by Residual Polar Field within Unit-cell-scale LaAlO$_3$ Films on SrTiO$_3$
  
  
    
  
  
  
  
  
    
    
            Haixing Liang𝟙, 
            Long Cheng, 
            Xiaofang Zhai, 
            Nan Pan, 
            Guo Hongli, 
            Zhao Jin, 
            Hui Zhang, 
            Lin Li, 
            Xiaoqiang Zhang, 
            Xiaoping Wang, 
            Changgan Zeng, 
            Zhenyu Zhang, 
            J. G. Hou
   
  
  
  
  
    
    
      
    
    January 2013
  
  
  
  
  
  
  
  
  
  
  
  
 
    
  
  
  
  
 
  
    
    
    
    
    
    
    
    
      
      
        
          Publication
          Scientific Reports