For 10 points, name this solid state physicist.
Murphy and Good characterized the transition region between the Nordheim-Fowler model and a model named after Richardson-Dushman and sometimes this man. Pointed tungsten crystals coated with zirconium oxide are often used in emission guns that reduce the work function with an applied electric field in his namesake effect. This man names a phenomenon in which image charge buildup as charge carriers approach a metal-semiconductor causes a reduction in the (*) barrier height. Due to a much higher reverse saturation current, another of his namesake devices requires a much lower forward bias to achieve similar currents as a p-n junction diode. To maintain neutrality, the removal of a cation or an anion gives rise to intrinsic crystal defects named after this man who isn't Frenkel. For 10 points, name this solid state physicist.
Murphy and Good characterized the transition region between the Nordheim-Fowler model and a model named after Richardson-Dushman and sometimes this man.
Walter Schottky [do not accept the similar sounding "Shockley"]