期刊
SCIENCE
卷 366, 期 6471, 页码 1359-+出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaw4329
关键词
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资金
- European Union's research and innovation program (H2020-FETFLAG-2018-2020) [820394]
- Agence Nationale de la Recherche
- Investissements d'Avenir program through the LabEx PALM [ANR-10-LABX-0039-PALM]
- Paris-Saclay Strategic Research Initiative for Quantum Engineering (IQUPS)
- Paris Ile-de-France Region in the framework of DIM SIRTEQ
Pressure can be used to tune the interplay among structural, electronic, and magnetic interactions in materials. High pressures are usually applied in the diamond anvil cell, making it difficult to study the magnetic properties of a micrometer-sized sample. We report a method for spatially resolved optical magnetometry based on imaging a layer of nitrogen-vacancy (NV) centers created at the surface of a diamond anvil. We illustrate the method using two sets of measurements realized at room temperature and low temperature, respectively: the pressure evolution of the magnetization of an iron bead up to 30 gigapascals showing the iron ferromagnetic collapse and the detection of the superconducting transition of magnesium dibromide at 7 gigapascals.
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