Low-temperature scanning tunneling microscope with a superconducting magnet

为了研究吸附在金属表面的纳米物体的磁性和开关动力学，需要一台商用超导磁体超高真空低温扫描隧道显微镜，主要是单个具有磁矩的分子。该仪器的基准温度为0.4K，并配备了超导磁体，可以在垂直于样品的方向提供高达11T的可变磁场。显微镜由制备室补充，以在现场制备干净的样品。该仪器将用于探索三个研究轴线：(I)单个分子的自旋态转换，(Ii)多核分子化合物的磁性，以及(Iii)磁性分子和其他纳米系统的开关动力学。该仪器具有120微电子伏光谱能量分辨率和可变磁场，特别适用于精确表征磁性系统。后者还允许极化自旋系统，包括显微镜顶端的磁性原子团，对自旋极化电流敏感。

A commercial ultra-high vacuum low-temperature scanning tunneling microscope with a superconducting magnet is requested to investigate the magnetic properties and the switching dynamics of nano-objects, primarily individual molecules with a magnetic moment, adsorbed on metal surfaces. The instrument has a base temperature of 0.4 K and is equipped with a superconducting magnet that can provide a variable magnetic field of up to 11 T in the direction perpendicular to the sample. The microscope is complemented by a preparation chamber to prepare clean samples in situ. This instrumentation shall be used to explore three axes of research: (i) the spin-state switching of individual molecules, (ii) the magnetic properties of multinuclear molecular compounds, and (iii) the switching dynamics of magnetic molecules and other nano-systems. The instrument is particularly adapted to precisely characterize magnetic systems owing to the 120 µeV spectroscopic energy resolution and the variable magnetic field. The latter also allows polarizing spin systems, including clusters of magnetic atoms at the tip of the microscope to be sensitive to spin polarized currents.