Sakurai T, Kimura S, Kimata M, Nojiri H, Awaji S, Okubo S, Ohta H, Uwatoko Y, Kudo K, Koike Y
Research Facility Center for Science and Technology, Kobe University, Nada, Kobe 657-8501, Japan.
Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
J Magn Reson. 2018 Nov;296:1-4. doi: 10.1016/j.jmr.2018.08.005. Epub 2018 Aug 23.
We have developed a high-pressure electron spin resonance probe and successfully installed into the world's highest-field cryogen-free superconducting magnet having a maximum central field of 24.6 T. The high pressure of 2.5 GPa is achieved by the specially designed piston-cylinder pressure cell using THz-wave-transparent components. In the first application of this high-pressure high-field ESR system, we observed that the orthogonal dimer spin system SrCu(BO) undergoes a quantum phase transition from the dimer singlet ground to the plaquette singlet ground states.
我们开发了一种高压电子自旋共振探头，并成功将其安装到世界上最高场强的无液氦超导磁体中，该磁体的最大中心场强为24.6 T。通过使用太赫兹波透明组件的特殊设计的活塞 - 圆筒压力室实现了2.5 GPa的高压。在这个高压高场电子自旋共振系统的首次应用中，我们观察到正交二聚体自旋系统SrCu(BO)经历了从二聚体单重基态到面元单重基态的量子相变。
