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           _    _   __    __   _    _     _____   
  ____    | || | || \ \\ / // | || | ||  / ____|| 
 |    \\  | || | ||  \ \/ //  | || | || / //---`' 
 | [] ||  | \\_/ ||   \  //   | \\_/ || \ \\___   
 |  __//   \____//     \//     \____//   \_____|| 
 |_|`-`     `---`       `       `---`     `----`  
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Text this: Datta-and-Das spin transistor controlled by a high-frequency electromagnetic field