Research on Novel Quantum State by Polarized Inelastic Neutron Scattering Technique

2014 Fiscal Year Final Research Report

• Project/Area Number: 24340077
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: MASUDA Takatsugu 東京大学, 物性研究所, 准教授 (90313014)
• Co-Investigator(Kenkyū-buntansha): SODA Minoru 東京大学, 物性研究所, 助教 (40463905)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 偏極中性子 / 中性子散乱 / フラストレート系 / マルチフェロイクス / スピン・ダイナミクス / エレクトロマグノン / 量子スピン系

Outline of Final Research Achievements

Neutron scattering technique is the best probe for the determination of material structures and the observation of microscopic dynamics. It has, thus, been widely used for the observation of spin correlation and elementary excitation in novel quantum states. Though the unpolarized neutron has been the main stream for inelastic neutron scattering, the use of polarized neutron brings much more information such as separation of magnetic and phonon excitations, observation of hybrid magneto-lattice excitation, etc. In this project our goal was to develop the polarized inelastic neutron scattering spectrometer, to make collection of high-quality data possible, and to reveal the nature of novel quantum states. We implemented supermirror polarization device on the existing spectrometer. At present we are waiting for JRR3. Meanwhile we proceed neutron scattering study on quantum spin system, multiferroic materials, and frustration systems by using J-PARC/MLF and neutron facilities abroad.

Free Research Field

磁性