1. Development of in situ two-coil mutual inductance technique in a multifunctional scanning tunneling microscope
- Author
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Zhi-Jun Tang, Zi-Xin Wang, Yaoyi Li, Zhi-Long Liu, Ming-Chao Duan, Canhua Liu, Jian-Feng Ge, Dandan Guan, Dong Qian, Guan-Yong Wang, and Jin-Feng Jia
- Subjects
Superconductivity ,Materials science ,business.industry ,Nanotechnology ,02 engineering and technology ,Substrate (electronics) ,021001 nanoscience & nanotechnology ,01 natural sciences ,law.invention ,Inductance ,Reflection (mathematics) ,law ,0103 physical sciences ,Diamagnetism ,Optoelectronics ,Thin film ,Scanning tunneling microscope ,010306 general physics ,0210 nano-technology ,business ,Instrumentation ,Type-II superconductor - Abstract
Superconducting thin films have been a focal point for intensive research efforts since their reduced dimension allows for a wide variety of quantum phenomena. Many of these films, fabricated in UHV chambers, are highly vulnerable to air exposure, making it difficult to measure intrinsic superconducting properties such as zero resistance and perfect diamagnetism with ex situ experimental techniques. Previously, we developed a multifunctional scanning tunneling microscope (MSTM) containing in situ four-point probe (4PP) electrical transport measurement capability in addition to the usual STM capabilities [Ge et al., Rev. Sci. Instrum. 86, 053903 (2015)]. Here we improve this MSTM via development of both transmission and reflection two-coil mutual inductance techniques for in situ measurement of the diamagnetic response of a superconductor. This addition does not alter the original STM and 4PP functions of the MSTM. We demonstrate the performance of the two-coil mutual inductance setup on a 10-nm-thick NbN thin film grown on a Nb-doped SrTiO3(111) substrate.
- Published
- 2017
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