arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.3526cond-mat.mes-hall
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利用金刚石自旋阵列的高灵敏度磁成像

High sensitivity magnetic imaging using an array of spins in diamond

Steffen Steinert, Florian Dolde, Philipp Neumann, Andrew Aird, Boris Naydenov, Gopalakrishnan Balasubramanian, Fedor Jelezko, Joerg Wrachtrup

摘要:

我们提出了一种利用金刚石二维自旋阵列的固态磁场成像技术。磁性传感自旋阵列由在浅深度处产生的氮空位(NV)中心制成。它们的光学响应用于测量近距离的外部磁场。使用CCD相机以多路复用方式从60 × 60 $μ$ m视场读出光学检测的磁共振(ODMR)。我们实验证明了完整的二维矢量成像的磁场所产生的一对载流微导线。所提出的宽场NV磁力计除了其20 nT/ $\sqrt{Hz}$的高磁灵敏度和矢量重构之外,还提供了在室温下前所未有的时空分辨率和功能。

英文摘要:

We present a solid state magnetic field imaging technique using a two dimensional array of spins in diamond. The magnetic sensing spin array is made of nitrogen-vacancy (NV) centers created at shallow depths. Their optical response is used for measuring external magnetic fields in close proximity. Optically detected magnetic resonance (ODMR) is readout from a 60x60 $μ$m field of view in a multiplexed manner using a CCD camera. We experimentally demonstrate full two-dimensional vector imaging of the magnetic field produced by a pair of current carrying micro-wires. The presented widefield NV magnetometer offers in addition to its high magnetic sensitivity of 20 nT/$\sqrt{Hz}$ and vector reconstruction, an unprecedented spatio-temporal resolution and functionality at room temperature.

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