Probing Thermal Magnon Current Mediated by Coherent Magnon via Nitrogen-Vacancy Centers in Diamond
Probing Thermal Magnon Current Mediated by Coherent Magnon via Nitrogen-Vacancy Centers in Diamond
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DOI：
10.1103/physrevapplied.16.064058
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发表时间：
2020-07
影响因子：
4.6
通讯作者：
D. Prananto;Yuta Kainuma;Kunitaka Hayashi;N. Mizuochi;K. Uchida;T. An
中科院分区：
文献类型：
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作者：
D. Prananto;Yuta Kainuma;Kunitaka Hayashi;N. Mizuochi;K. Uchida;T. An
目前，热激发磁振子由于其在计算设备和热电转换技术中的潜力而受到广泛研究。我们报道了在温度梯度下，利用金刚石中氮空位（NV）中心的电子自旋探测磁性绝缘体钇铁石榴石中传播的热磁振子电流。通过利用相干和非相干磁振子之间的相互作用，观察到热磁振子电流通过NV自旋托管在一个梁形块状金刚石和纳米金刚石与相干磁振子耦合的形式修改拉比振荡频率以及自旋弛豫率。热磁振子电流的局部探测是创建一个新的自旋热电子学和自旋量子位杂交器件平台的基础。
Currently, thermally excited magnons are being intensively investigated owing to their potential in computing devices and thermoelectric conversion technologies. We report the detection of thermal magnon current propagating in a magnetic insulator yttrium iron garnet under a temperature gradient, using electron spins associated with nitrogen-vacancy (NV) centers in diamond. By exploiting the interplay between coherent and incoherent magnons, thermal magnon current is observed via NV spins hosted in a beam-shaped bulk diamond and a nanodiamond coupled with coherent magnon in the form of modified Rabi oscillation frequencies as well as spin relaxation rates. The local probing of thermal magnon current serves as a basis for creating a new device platform hybridizing spin caloritronics and spin qubits.