Abstract
We report on the first scanning tunnelling spectroscopymeasurements on the edge of aluminium-doped magnesium diboride(Mg1−xAlxB2,x = 0.085) single crystals. Totarget their edge (∼30 µm thick) we have developed a low temperature STM facility featuring a home built compact STMhead coupled to an inertially driven carriage. This allows linear submicronic positioningover millimetric distances. We demonstrate the capabilities of our system by showingreproducible tunnelling spectra obtained both parallel and perpendicular to the crystallinec axis. Tunnelling on the edge reveals the gap originating in the highly 2Dσ band but in contrastwith pure MgB2 does not showthe signature of the π gap.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
