Phonon Diodes and Transistors from Magneto-acoustics
  By sculpting the magnetic field applied to magneto-acoustic materials, phonons can be used for information processing. Using a combination of analytic and numerical techniques, we demonstrate designs for diodes (isolators) and transistors that are independent of their conventional, electronic formulation. We analyze the experimental feasibility of these systems, including the sensitivity of the circuits to likely systematic and random errors. 
Sophia R. Sklan and Jeffrey C. Grossman
cond-mat.mes-hall cond-mat.other