We report that the high critical temperature superconductor (HTCS) LaCaBaCu3O7 in the form of nanograins can be linked to Au(111) surfaces through self assembled monolayers (SAMs) of HS-C 8H16-HS [octane (di)thiol]. We show that La1113 particles (100 nm mean diameter) can be functionalized by octane (di)thiol without affecting their superconducting critical temperature (TC = 80 K). X-ray photoemission spectroscopy (XPS) analysis reveals that the thiol functional heads link the superconducting grain surfaces creating sulfonates and we deduce that bonding between the S atoms and Cu(1) atoms of the La1113 structure would be formed. We suggest a design for a superconducting transistor fabricated by immobilized La1113 nanograins in between two gold electrodes which could be controlled by an external magnetic field gate. © 2010 The Japan Society of Applied Physics.
De Los Santos Valladares, L., Dominguez, A. B., Llandro, J., Suzuki, S., Mitrelias, T., Quispe, R. B., Barnes, C. H. W., & Majima, Y. (2010). Attaching thiolated superconductor grains on gold surfaces for nanoelectronics applications. Japanese Journal of Applied Physics. https://doi.org/10.1143/JJAP.49.093102