Prof. Marc Baldo
For logic, we focus on building systems using spintronics to overcome perhaps the greatest weakness of conventional field-effect transistor logic—its power dissipation. Although the switching energy of transistors has continued to decrease as conventional devices scale to smaller sizes, the supply voltage cannot scale correspondingly and more energy is lost to charge leakage. We propose instead to manipulate information in collective states such as the domains of ferromagnets. Strong interactions in ferromagnetic domains align electron spins collectively. We have been working to translate these phenomena into practical, concatenable digital logic circuits.