Atomic resolution imaging at 2.5 GHz using near-field microwave microscopy

Details Atomic resolution imaging at 2.5 GHz using near-field microwave microscopy Atomic resolution imaging at 2.5 GHz using near-field microwave microscopy

2010-07-05

arxiv.org/abs/1007.0750v1

Appl.Phys.Lett. 97, 183111 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 5 figures, submitted to Applied Physics Letters

Scientific paper

10.1063/1.3514243

Atomic resolution imaging is demonstrated using a hybrid scanning tunneling/near-field microwave microscope (microwave-STM). The microwave channels of the microscope correspond to the resonant frequency and quality factor of a coaxial microwave resonator, which is built in to the STM scan head and coupled to the probe tip. We find that when the tip-sample distance is within the tunneling regime, we obtain atomic resolution images using the microwave channels of the microwave-STM. We attribute the atomic contrast in the microwave channels to GHz frequency current through the tip-sample tunnel junction. Images of the surfaces of HOPG and Au(111) are presented.

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