強相関物質の磁場誘起相転移 スピン、電荷、軌道、格子の自由度が絡み合う強相関電子系の研究は磁気物理の重要なテーマです。 磁場を用いた物質の量子相制御を目的に、電子スピンによる相制御や強磁場分光による軌道や電荷の励起の研究などを進めています。 Novel Magnetic Field Induced Phases in Strongly Correlated Compounds We investigate phase transitions in strongly correlated electron systems, where spin, charge and orbital degrees of freedom strongly interact each other. Principles to control such phases by using magnetic fields, charge and orbital excitations and quantum criticality are important subjects. For More Insight Coincident Onset of Charge-density-wave Order at a Quantum Critical Point in Underdoped YBa2Cu3Ox Phys. Rev. B 97(2018) 224513 URu2Si2 under intense magnetic fields: From hidden order to spin-density wave, Physica B 536(2018) 457-460 Robust Singlet Dimers with Fragile Ordering in Two-Dimensional Honeycomb Lattice of Li2RuO3, Sci. Rep. 6(2016) 25238 Ideal Charge-Density-Wave Order in the High-Field State of Superconducting YBCO, Pro. Natl. Acad. Sci. U.S.A. 113(2016) 14645 Field-Induced Spin-Density Wave beyond Hidden Order in URu2Si2, Nature Communications 7(2016) 13075 Three-dimensional Charge Density Wave Order in YBa2Cu3O6.67 at High Magnetic Fields, Science 350(2015) 949 Spin-Stripe Phase in a Frustrated Zigzag Spin-1/2 Chain, Nat. Commun. 6(2015) 7255 Magnetic Structure of Phase II in U(Ru0.96Rh0.04)2Si2 Determined by Neutron Diffraction under Pulsed High Magnetic Fields, Phys. Rev. Lett. 110(2013) 216406 Heat Capacity Reveals the Physics of a Frustrated Spin Tube, Phys. Rev. Lett. 105(2010) 037206 Magnetic-Field Induced Phase Transitions in a Weakly Coupled s=1/2 Quantum Spin Dimer System B3Cr2O8, Phys. Rev. Lett. 102(2009) 177204 Copyright (C)2013 nlab All Rights Reserved.