25-30 August 2019
Henry Ford Building
Europe/Berlin timezone

Muti-Extreme THz ESR -Recent Developments and Future-

29 Aug 2019, 16:10
35m
Lecture Hall C (Henry Ford Building)

Lecture Hall C

Henry Ford Building

Invited talk EPR development and applications EPR

Speaker

Prof. Hitoshi Ohta (Kobe University, Molecular Photoscience Research Center)

Description

THz ESR under multi-extreme conditions, which covers the frequency region between 0.03 and 7 THz1, the temperature region between 1.8 and 300 K1, the magnetic field region up to 55 T1, and the pressure up to 1.5 GPa2, has been developed in Kobe. Firstly, we will show our recent developments of the torque magnetometry3 and mechanically detected ESR4 measurements using a commercially available membrane-type surface stress sensor, which is the extension from our micro-cantilever ESR5, and its application to the microliter solution sample (myoglobin)6. Secondly, we will show that the pressure region is extended to 2.7 GPa using the hybrid-type pressure cell7. Recent development of high-pressure THz ESR with the 25 T superconducting magnet8 and its application to Cs2CuCl4 will be discussed9.
1. H. Ohta et al., J. Low Temp. Phys. 2013, 170, 511.
2. T. Sakurai et al., Rev. Sci. Inst. 2007, 78, 065107
3. H. Takahashi et al., J. Phys. Soc. Jpn. 2017, 86, 063002 (Editor's Choice)
4. H. Takahashi et al., Rev. Sci. Intrum. 2018, 89, 036108
5. H. Ohta et al., AIP Conf. Proceedings 2006, 850, 1643; E. Ohmichi et al., Rev. Sci. Instrum. 2008, 79, 103903; E. Ohmichi et al., Rev. Sci. Instrum. 2009, 80, 013904; E. Ohmichi et al., J. Mag. Res. 2013, 227, 9; H. Takahashi, E. Ohmichi, H. Ohta, Appl. Phys. Lett. 2015, 107, 182405.
6. T. Okamoto et al., Appl. Phys. Lett. 2018, 113 223702 (Editors Picks)
7. K. Fujimoto et al., Appl. Mag. Res. 2013, 44, 893; H. Ohta et al., J. Phys. Chem. B 2015, 119, 13755; T. Sakurai et al., J. Mag. Res., 2015, 259,108; T. Sakurai et al., J. Phys. Soc. Jpn. 2018, 87, 033701.
8. T. Sakurai et al., J. Mag. Res. 2018, 296, 1-4
9. S. A. Zvyagin et al., Nature Communications, 2019, 10,1064

Primary authors

Prof. Hitoshi Ohta (Kobe University, Molecular Photoscience Research Center) Prof. Sususmu Okubo (Kobe University, Molecular Photoscience Research Center) Prof. Eiji Ohmichi (Kobe University, Graduate School of Science) Dr Takahiro Sakurai (Kobe University, Research Facility Center for Science and Technology) Dr Hideyuki Takahashi (Kobe University, Molecular Photoscience Research Center)

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