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