Quasi‐Solid‐State Single‐Atom Transistors

• DOI: 10.1002/adma.201801225
• Publication Date: 2018-06-21T09:42:13Z
• Authors: Fangqing Xie; Andreas Peukert; Thorsten Bender; Christian Obermair; Florian Wertz; Philipp Schmieder; Thomas Schimmel
• Keywords: Physics; ddc:530; 02 engineering and technology; info:eu-repo/classification/ddc/530; 0210 nano-technology; 530; 7. Clean energy; 3. Good health

Abstract The single‐atom transistor represents a quantum electronic device at room temperature, allowing the switching of an electric current by controlled and reversible relocation one single atom within metallic point contact. So far, operates applying small voltage to control electrode or “gate” aqueous electrolyte. Here, operation atomic in quasi‐solid state is demonstrated. Gelation pyrogenic silica transforms electrolyte into state, exhibiting cohesive properties solid diffusive liquid, preventing leakage problem avoiding handling liquid system. characterized cyclic voltammetry, conductivity measurements, rotation viscometry. Thus, first demonstration operating quasi‐solid‐state given. silver atomic‐scale transistors allow bistable between zero quantized conductance levels, which are integer multiples G 0 = 2 e / h . Source–drain currents ranging from 1 8 µA applied these experiments. Any obvious influence gelation on electron transport contact not observed.