Creating an alias for an object in R

If I have an object with long_name_for_large_data_frame, can I create an "d" alias for it without duplicating the dataframe to save memory? I checked ".Alias" which says it is a non-existent function. Or should I keep using:

d <- long_name_for_large_data_frame

      

        
        
        
      

    

Thank you for your help.