中国物理B ›› 2019, Vol. 28 ›› Issue (3): 30702-030702.doi: 10.1088/1674-1056/28/3/030702

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Magnetic field analysis in a diamond anvil cell for Meissner effect measurement by using the diamond NV- center

Lin Zhao(赵琳), Donghui Yue(岳冬辉), Cailong Liu(刘才龙), Min Wang(王敏), Yonghao Han(韩永昊), Chunxiao Gao(高春晓)   

  1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • 收稿日期:2018-11-28 修回日期:2019-01-09 出版日期:2019-03-05 发布日期:2019-03-05
  • 通讯作者: Yonghao Han E-mail:hanyh@jlu.edu.cn
  • 基金资助:

    Project supported by the National Key R&D Program of China (Grant No. 2018YFA0305900) and the National Natural Science Foundation of China (Grant Nos. 11774126, 11674404, and 51772125).

Magnetic field analysis in a diamond anvil cell for Meissner effect measurement by using the diamond NV- center

Lin Zhao(赵琳), Donghui Yue(岳冬辉), Cailong Liu(刘才龙), Min Wang(王敏), Yonghao Han(韩永昊), Chunxiao Gao(高春晓)   

  1. State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
  • Received:2018-11-28 Revised:2019-01-09 Online:2019-03-05 Published:2019-03-05
  • Contact: Yonghao Han E-mail:hanyh@jlu.edu.cn
  • Supported by:

    Project supported by the National Key R&D Program of China (Grant No. 2018YFA0305900) and the National Natural Science Foundation of China (Grant Nos. 11774126, 11674404, and 51772125).

摘要:

Diamond negatively charged nitrogen-vacancy (NV-) centers provide an opportunity for the measurement of the Meissner effect on extremely small samples in a diamond anvil cell (DAC) due to their high sensitivity in detecting the tiny change of magnetic field. We report on the variation of magnetic field distribution in a DAC as a sample transforms from normal to superconducting state by using finite element analysis. The results show that the magnetic flux density has the largest change on the sidewall of the sample, where NV- centers can detect the strongest signal variation of the magnetic field. In addition, we study the effect of magnetic coil placement on the magnetic field variation. It is found that the optimal position for the coil to generate the greatest change in magnetic field strength is at the place as close to the sample as possible.

关键词: negatively charged nitrogen-vacancy (NV-) centers, diamond anvil cell, superconductivity, magnetic field detection

Abstract:

Diamond negatively charged nitrogen-vacancy (NV-) centers provide an opportunity for the measurement of the Meissner effect on extremely small samples in a diamond anvil cell (DAC) due to their high sensitivity in detecting the tiny change of magnetic field. We report on the variation of magnetic field distribution in a DAC as a sample transforms from normal to superconducting state by using finite element analysis. The results show that the magnetic flux density has the largest change on the sidewall of the sample, where NV- centers can detect the strongest signal variation of the magnetic field. In addition, we study the effect of magnetic coil placement on the magnetic field variation. It is found that the optimal position for the coil to generate the greatest change in magnetic field strength is at the place as close to the sample as possible.

Key words: negatively charged nitrogen-vacancy (NV-) centers, diamond anvil cell, superconductivity, magnetic field detection

中图分类号:  (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)

  • 07.07.Df
07.55.Ge (Magnetometers for magnetic field measurements) 74.20.-z (Theories and models of superconducting state) 02.70.Dh (Finite-element and Galerkin methods)