It is well-known that man-made 1D superlattice structure (for instance, GaAs-Ga1-xAlxAs prepared with alternating epitaxy) exhibits a resonant tunneling phenomenon. The mean free path of an electron is, however limited to the order of 100 Å by inelastic scattering from phonons; i.e. the resonant tunneling process turns into an incoherent tunneling process by means of the scattering. We have discovered previously that the conventional superconductivity in metals such as Hg, Pb is a resonant tunneling state of single small polaron not Cooper pair, which can be formed by the covalent electron- lattice interaction. This should suggest that the suitably prepared superlattice may become a superconductor even at room temperature.
Journal: TechConnect Briefs
Volume: 2, Nanotechnology 2012: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational (Volume 2)
Published: June 18, 2012
Pages: 42 - 43
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topicss: Nanoelectronics, Photonic Materials & Devices