A schematic of the dual-tip STM system.
A schematic of the split-coil superconducting magnet Dewar for dual low temperature and ultrahigh vacuum compatible STM.
A variable temperature insert and the dual STM assembly.
(a) Piezoelectric steppers. (b) Capacitive positioning sensor. (c) Capacitance vs displacement of a position sensor embedded in a PZT stepper. (d) PZT stepper efficiency vs the voltage applied on the PZT actuator.
CCD images of the two tips. (a) Viewing normal to the sample surface. (b) Viewing into the sample surface.
Functional block diagram showing the architecture of the personal computer (PC) and electronics control system.
STM image of the Si(111) lattice acquired in magnetic field at .
STM image showing an atomic step of the Si(111) surface at in (a) , (b) , and (c) magnetic field.
(a) curves of a 5 ML Au film on Si(111) at various temperatures. (b) Differential conductivity of a 5 ML Au film with 25, 50, 75, and probe-to-probe separations, respectively.
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