https://scholars.lib.ntu.edu.tw/handle/123456789/426468
標題: | The design and the performance of an ultrahigh vacuum 3He fridge-based scanning tunneling microscope with a double deck sample stage for in-situ tip treatment | 作者: | Guan, Syu-You HSIEN-SHUN LIAO Juang, Bo-Jing Chin, Shu-Cheng Chuang, Tien-Ming Chang, Chia-Seng |
關鍵字: | Magnetic structure; Spin polarized scanning tunneling microscopy; Superconducting gap; Physics - Materials Science; Physics - Materials Science | 公開日期: | 2019 | 出版社: | ELSEVIER SCIENCE BV | 卷: | 196 | 起(迄)頁: | 180 | 來源出版物: | Ultramicroscopy | 摘要: | Scanning tunneling microscope (STM) is a powerful tool for studying the structural and electronic properties of materials at the atomic scale. The combination of low temperature and high magnetic field for STM and related spectroscopy techniques allows us to investigate the novel physical properties of materials at these extreme conditions with high energy resolution. Here, we present the construction and the performance of an ultrahigh vacuum 3He fridge-based STM system with a 7 Tesla superconducting magnet. It features a double deck sample stage on the STM head so we can clean the tip by field emission or prepare a spin-polarized tip in situ without removing the sample from the STM. It is also capable of in situ sample and tip exchange and preparation. The energy resolution of scanning tunneling spectroscopy at T = 310 mK is determined to be 400 mK by measuring the superconducting gap with a niobium tip on a gold surface. We demonstrate the performance of this STM system by imaging the bicollinear magnetic order of Fe1+xTe at T = 5 K. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/426468 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85056245538&doi=10.1016%2fj.ultramic.2018.10.008&partnerID=40&md5=0242a0a96a18b2a19a36e585ba8aca02 |
ISSN: | 0304-3991 | DOI: | http://arxiv.org/abs/1805.08121v3 10.1016/j.ultramic.2018.10.008 |
顯示於: | 機械工程學系 |
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