ISAO ISHII

Last Updated :2020/07/01

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Associate Professor
Web Site
E-mail
ishhiroshima-u.ac.jp
Other Contact Details
Kagamiyama 1-3-1, Higashi-Hiroshima, Hiroshima, Japan, Japan
TEL : (+81)82-424-7042 FAX : (+81)82-424-7042
Self-introduction
Experimental studies on the strongly correlated electron systems by means of ultrasonic spectroscopy. Our research focuses on novel physical properties originating from magnetism, multipoles, and a large-amplitude atomic oscillation under multiple extreme conditions.

Basic Information

Major Professional Backgrounds

  • 2004/04/01, 2008/03/31, Hiroshima University, Graduate School of Advanced Sciences of Matter, Researcher
  • 2008/04/01, 2009/03/31, Niigata University, Graduate School of Science and Technology, Researcher
  • 2009/04/01, 2009/08/31, Hiroshima University, Graduate School of Advanced Sciences of Matter , Researcher
  • 2009/09/01, 2014/03/31, Hiroshima University, Graduate School of Advanced Sciences of Matter , Lecturer (Special Appointment)
  • 2014/04/01, Hiroshima University, Graduate School of Advanced Sciences of Matter , Assistant Professor

Educational Backgrounds

  • Hiroshima University, Japan, 2001/04, 2004/03
  • Hiroshima University, Japan, 1999/04, 2001/03
  • Hiroshima University, Japan, 1995/04, 1999/03

Academic Degrees

  • Doctor of Science, Hiroshima University
  • Master of Science, Hiroshima University

Educational Activity

  • 【Bachelor Degree Program】School of Science : Physics
  • 【Master's Program】Graduate School of Advanced Sciences of Matter : Quantum Matter
  • 【Doctoral Program】Graduate School of Advanced Sciences of Matter : Quantum Matter

In Charge of Primary Major Programs

  • Physics

Research Fields

  • Mathematical and physical sciences;Physics;Condensed matter physics II

Research Keywords

  • Low temperature physics, Multi-extreme conditions, Strongly correlated electron systems, Ultrasonic spectroscopy

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2020, Liberal Arts Education Program1, 1Term, Exercise in Information Literacy
  2. 2020, Undergraduate Education, 1Term, Experiments in General Physics A
  3. 2020, Graduate Education (Master's Program) , First Semester, Seminar on Sciences of Matter
  4. 2020, Graduate Education (Master's Program) , Second Semester, Seminar on Sciences of Matter
  5. 2020, Graduate Education (Master's Program) , First Semester, Seminar on Basic Sciences of Matter A
  6. 2020, Graduate Education (Master's Program) , Second Semester, Seminar on Basic Sciences of Matter B
  7. 2020, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Basic Sciences of Matter
  8. 2020, Graduate Education (Master's Program) , 1Term, Exercises in Basic Sciences of Matter A
  9. 2020, Graduate Education (Master's Program) , 2Term, Exercises in Basic Sciences of Matter A
  10. 2020, Graduate Education (Master's Program) , 3Term, Exercises in Basic Sciences of Matter B
  11. 2020, Graduate Education (Master's Program) , 4Term, Exercises in Basic Sciences of Matter B
  12. 2020, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  13. 2020, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter

Award of Education

  1. 2019/11/22, Hiroshima university

Research Activities

Academic Papers

  1. Magnetic transition due to the inter-singlet spin-exchange interaction and elastic softening by the interplay of electric quadrupoles in the distorted kagome lattice antiferromagnet Tb3Ru4Al12, PHYSICAL REVIEW B, 101(16), 20200415
  2. Crystal-field effects in Er3Ru4Al12 with a distorted kagome lattice, PHYSICAL REVIEW B, 101, 094415, 20200313
  3. Acoustic signatures of the phase transitions in the antiferromagnet U2Rh2Sn, PHYSICAL REVIEW B, 101(1), 014408, 20200108
  4. Anisotropic phase diagram of ferroquadrupolar ordering in the trigonal chiral compound DyNi3Ga9, PHYSICAL REVIEW B, 99(7), 20190226
  5. Magnetization beyond the Ising limit of Ho2Ti2O7, PHYSICAL REVIEW B, 99(8), 20190220
  6. Magnetic phase diagram and crystal-field effects in the kagome-lattice antiferromagnet U3Ru4Al12, PHYSICAL REVIEW B, 99(5), 20190215
  7. Magnetic-field-induced quadrupolar ordering and the crystal electric field effect in the distorted kagome lattice antiferromagnet Dy3Ru4Al12, PHYSICAL REVIEW B, 97(23), 20180618
  8. Crystal-field effects in the kagome antiferromagnet Ho3Ru4Al12, PHYSICAL REVIEW B, 97(18), 20180508
  9. Ferroquadrupolar Ordering due to the Quasi-degenerate Quartet in the Trigonal Chiral Structure of DyNi3Ga9, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 87, 013602, 20171218
  10. Elastic softening due to the quadrupole interaction and anomalous magnetic phase diagram under the magnetic field in HoRu2Al10, PHYSICAL REVIEW B, 96(15), 20171023
  11. Field induced phase transition with quadrupole fluctuation in HoFe2Al10 with orthorhombic symmetry, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 86, 044601, 20170323
  12. Exotic Ground State and Elastic Softening under Pulsed Magnetic Fields in PrTr2Zn20 (Tr = Rh, Ir), JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(4), 043601, 20160415
  13. Elastic Softening in HoFe2Al10 due to the Quadrupole Interaction under an Orthorhombic Crystal Electric Field, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85(7), 074604, 20160715
  14. The Crystal Electric Field Effect on 4f-Hole and Magnetic Phase Diagram in Heavy-Fermion Compound YbPtGe Determined from Ultrasonic Measurements, J. Phys. Soc. Jpn, 84, 124602, 20151215
  15. Anomalous Elastic Softening due to the Crystal Electric Field Effect and Successive Phase Transitions in the Yb-Based Heavy-Fermion Antiferromagnet YbIrGe, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83(4), 043601, 201404
  16. Antiferroquadrupolar ordering and magnetic-field-induced phase transition in the cage compound PrRh2Zn20, PHYSICAL REVIEW B, 87(20), 205106, 20130507
  17. Lattice instability and elastic dispersion due to the rattling motion in the type-I clathrate Ba8Ga16Sn30, PHYSICAL REVIEW B, 85(8), 085101, 20120207
  18. Successive Phase Transitions and Anisotropic Magnetic Field-Temperature Phase Diagram in NdRu2Al10, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(6), 064602, 201206
  19. Magnetic Field-Temperature Phase Diagram of the Ferro-quadrupolar State and Crystal Electric Field Effect in UCu2Sn, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 81(2), 024602, 201202
  20. The anharmonic vibration of Li in lithium amide, APPLIED PHYSICS LETTERS, 100(15), 151911, APR 9 2012
  21. Antiferrodistortive phase transition in pseudorhombohedral (Pb0.94Sr0.06)( Zr0.550Ti0.450)O-3: A combined synchrotron x-ray and neutron powder diffraction study, PHYSICAL REVIEW B, 86(17), 174117, NOV 30 2012
  22. Antiferro-Quadrupolar Ordering at the Lowest Temperature and Anisotropic Magnetic Field-Temperature Phase Diagram in the Cage Compound PrIr2Zn20, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 80(9), 093601, 201109
  23. Elastic Hardening at Novel Phase Transition in Cage Compound CeRu2Al10, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 79, 05360, 2010
  24. Superconductivity and Structural Phase Transitions in Caged Compounds RT2Zn20 (R=La,Pr, T=Ru,Ir), JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 79, 033704
  25. Low Temperature Magnetic Properties of Ce3Pd20Si6, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 79, 074712
  26. Ultrasonic Dispersion in All Elastic Moduli and Softening at Low Temperatures in Filled Skutterudite LaFe4Sb12, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 78, 084601, 2009
  27. Elastic, thermal, magnetic and transport properties of Kondo compounds CeRhIn and CeRhSn, JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 75, 024709
  28. Dynamical properties of guest ions in the type-I clathrate compounds X8Ga16Ge30 (X = Eu,Sr,Ba) investigated by Raman scattering, PHYSICAL REVIEW B, 74, 174303
  29. Spontaneous strain due to ferroquadrupolar ordering in UCu2Sn, PHYSICAL REVIEW B, 68, 144413, 2003
  30. Quadrupolar ordering of 5f electrons in UCu2Sn, PHYSICAL REVIEW B, 62, 49, 2000

Invited Lecture, Oral Presentation, Poster Presentation

  1. The Crystal Electric Field Effect in the Distorted Kagome Lattice Ferromagnet Nd3Ru4Al12, I. Ishii, T. Mizuno, S. Kumano, T. Umeno, D. Suzuki, A. V. Andreev, D. I. Gorbunov, M. S. Henriques, and T. Suzuki, International Conference on Strongly Correlated Electron Systems, 2019/09/23, Without Invitation, Okayama, Japan
  2. Elastic anomalies under magnetic fields in the heavy-fermion ferromagnet YbPtGe, I. Ishii, X. Xi, Y. Noguchi, T. Mizuno, S. Kumano, K. Araki, K. Katoh, and T. Suzuki, International Conference on Magnetism, 2018/07, Without Invitation, San Francisco, USA
  3. Ultrasonic Study on the Hexagonal Antiferromagnet Dy3Ru4Al12, I. Ishii, K. Takezawa, H. Goto, S. Kamikawa, A. V. Andreev, D. I. Gorbunov, M. S. Henriques, and T. Suzuki, International Conference on Strongly Correlated Electron Systems (SCES2016), 2016/05, Without Invitation, Hangzhou, China
  4. Elastic softening in the orthorhombic compound YbPdGe, I. Ishii, Y. Noguchi, H. Goto, X. Xi, S. Kamikawa, K. Araki, K. Katoh, and T. Suzuki, International Conference on Magnetism 2015, 2015/07, Without Invitation, Barcelona, Spain
  5. Elastic Softening of Transverse Modulus in YbIrGe, I. Ishii, Y. Noguchi, S. Kamikawa, T.K. Fujita, K. Katoh, and T. Suzuki, The International Conference on Strongly Correlated Electron Systems SCES2013, 2013/08, Without Invitation, Tokyo, Japan
  6. Elastic properties of cage compound CeOs2Al10, I. Ishii, Y. Suetomi, H. Muneshige, T.K. Fujita, Y. Muro, J. Kajino, T. Takabatake, and T. Suzuki, International Conference on Heavy Electrons 2010, 2010/09, Without Invitation, Tokyo, Japan
  7. Elastic modulus of cage compound PrRu2Zn20, I. Ishii, Y. Suetomi, T.K. Fujita, T. Onimaru, K.T. Matsumoto, Y.F. Inoue, T. Takabatake, and T. Suzuki, The International Conference on Strongly Correlated Electron Systems SCES 2010, 2010/06, Without Invitation, Santa Fe, USA

Awards

  1. 2020/01/08, Physical Review B Editors' Suggestion, American Physical Society
  2. 2010/02, JPSJ Papers of Editors' Choice, Journal of the Physical Society of Japan, Superconductivity and Structural Phase Transitions in Caged Compounds RT2Zn20 (R=La,Pr, T=Ru,Ir)

External Funds

Acceptance Results of Competitive Funds

  1. KAKENHI, 2019, 2021
  2. KAKENHI, 2018, 2020
  3. KAKENHI, 2014, 2015