Japanese

Grants-in-Aid for Scientific Reseach A 2012-2014 「Dirac Electrons in Solids」

International Workshop on Dirac Electrons in Solids

Scope

Dirac electron systems appear in various systems, such as graphene, quasi-two-dimensional organic conductors, bismuth, surface states in topological insulators, new materials like Ca3PbO. In these systems, characteristic transport properties due to linear dispersion of Dirac electron and topological properties have been extensively discussed.
In addition to these, there are many interesting research fields such as spin-Hall effect, orbital diamagnetism due to interband effects, Landau levels characteristic to Dirac dispersion, anomalous interlayer transport phenomena and magnetoresistance, and the effects of spin-orbit interaction and electron correlation.
In this workshop, we will focus on recent developments of theory and experiment of Dirac electron systems in the above materials. It will be important and fruitful for the researchers in the various fields to get together and discuss new ideas and new properties about Dirac electrons.

Venue & Date

  • Koshiba Hall, Department of Physics, University of Tokyo
  • 14 Jan. 2015-15 Jan. 2015

Abstract Submission

  • Deadline 31 Oct. 2014
  • Template is here
  • Submit to "dirac_atto_hosi.phys.s.u-tokyo.ac.jp"
    (Please exchange "_atto_" for "@".)

Proceedings

  • Please prepare and submit the proceedings at the reception desk of the workshop on 14th or 15th January, 2015.
  • Proceedings will be published in J. Phys. Conf. Series
  • Details of the proceedings are HERE.

Templates for TeX

ZIP file or individually, tex file, sty file, cls file, clo file, eps file

Templates for Word

ZIP file or individually, Guidelines, Example, Template

Supported by

Grants-in-Aid for Scientific Research (A) (No. 24244053) "Dirac electrons in solids"

Contact

Masao Ogata(Univ. Tokyo), Yuki Fuseya (Univ. Electro-Commun.), Yoshikazu Suzumura (Nagoya Univ.)
e-mail: dirac_atto_hosi.phys.s.u-tokyo.ac.jp

Program

pdf version is here

January 14 (Wednesday)

10:00-10:20OpeningM. Ogata (Department of Physics, University of Tokyo)
Bismuth (Chair: Y. Suzumura)
10:20-11:00K. Behnia (LPEM-ESPCI)“Orbital magnetoresistance of Dirac valleys in bismuth”
11:00-11:25Y. Fuseya (University of Electro-Communications)“Anomalous Spin Magnetic-Moment of Holes in Bismuth”
11:25-13:00Lunch
Theories on Dirac electrons I (Chair: Y. Fuseya)
13:00-13:40F. Piechon (CNRS, Universite Paris-Sud)“From Dia- to Paramagnetic Orbital Susceptibility of Dirac Electrons”
13:40-14:05T. Mizoguchi (Department of Physics, University of Tokyo)“Meissner Effect in Superconducting Dirac Electrons”
14:05-14:30S. A. Jafari (Sharif University of Technology)“Optical conductivity of strongly correlated Dirac fermions”
14:30-14:55M. Ezawa (Department of Applied Physics, University of Tokyo)“Topological Dirac Electrons in Silicene, Germanene and Stanene”
14:55-15:15Coffee Break
New materials (Chair: H. Matsuura)
15:15-15:40T. Hirose (ISSP, University of Tokyo)“An Extreme Quantum-Limit State in AV2Al20 (A = Y, La)”
15:40-16:05H. Sakai (Department of Applied Physics, University of Tokyo)“Magneto-transport properties of Dirac fermion coupled with Eu2+ local moments in a layered pnictide EuMnBi2”
16:05-16:30T. Tsumuraya (Riken)“First-Principles Study of Dirac Cones in a Single-Component Molecular Crystal under High Pressure”
16:30-18:00Poster session

January 15 (Thursday)

Ca3PbO (Chair: I. Proskurin)
9:00-9:25H. Takagi (Department of Physics, University of Tokyo)“3D Dirac electrons in anti-perovskite Sr3PbO”
9:25-9:50T. Kariyado (Tsukuba University)“Spin Texture of the Surface State of Three-Dimensional Dirac Material Ca3PbO”
9:50-10:10Coffee break
Theories on Dirac electrons II (Chair: A. Kobayashi)
10:10-10:50A. Schnyder (Max-Planck Institute)“Classification of topological quantum matter with reflection symmetries”
10:50-11:15T. Tohyama (Tokyo University of Science)“The Effect of Dirac Electrons on In-Plane Anisotropy and Superconductivity in Iron-Based Superconductors”
11:15-11:40T. Morinari (Kyoto University)“Chirality effect on superconductivity”
11:40-13:00Lunch
Organic conductor (Experiments) (Chair: T. Tohyama)
13:00-13:40N. Tajima (Toho University)“Quantum Transport Phenomena in Molecular Dirac Fermion Systems”
13:40-14:05Dong Liu (University of Tokyo)“Transport and NMR studies of the Dirac electrons in α-(BEDT-TTF)2I3”
14:05-14:30K. Miyagawa (Department of Applied Physics, University of Tokyo)“NMR Studies of Phase Transition from Metallic State to Dirac Electron State in Organic System, θ-(BEDT-TTF)2I3”
14:30-14:50Coffee break
Organic conductor (Theories) (Chair: M. Ogata)
14:50-15:15I. Proskurin (Department of Physics, University of Tokyo)“Magnetoconductivity of Dirac Materials in Quantizing Magnetic Fields”
15:15-15:40A. Kobayashi (Nagoya University)“Electronic States of Molecular Dirac Fermion Systems under in-Plane Magnetic Field”
15:40-16:05Y. Suzumura (Nagoya University)“Plaquette Chirality Patterns for robust ZGS in α-type Organic Conductor”
16:05-16:30T. Osada (ISSP, University of Tokyo)“Helical Edge Transport in Quantum Hall Ferromagnetic State in Organic Dirac Fermion Systems”

Poster session

1. M. Matsuno (Department of Applied Physics, University of Tokyo) “Possible NMR signatures of symmetry breaking in the Dirac Fermion material α-(BEDT-TTF)2I3 at high magnetic fields”
2. Y. Suzumura (Nagoya University) “Reflectance of Dirac Electrons in Organic Conductor”
3. K. Kubo (Kyoto University) “Effect of Interlayer Spin-flip Tunneling for Interlayer Magnetoresistance in Multilayer Dirac Fermion Systems”
4. H. Matsuura (Department of Physics, University of Tokyo) “Effect of Defect on Dirac Electron Systems”
5. T. Shirakawa (Riken) “Magnetic Impurity problems in graphene”
6. T. Yanagisawa (National Institute of Advanced Industrial Science and Technology) “Dirac Fermions and Kondo Effect”
7. M. Mashkoori (Sharif University of Technology) “Local magnetic moments in three dimensional Dirac material”
8. E. Ahmadi (Sharif University of Technology) “Nature of eigenstates of Dirac electrons in quantum Dots”
9. G. Matsuno (Nagoya University) “Effects of long-range Coulomb interaction in two-dimensional massless Dirac electron systems”
10. A. Sekine (IMR, Tohoku University) “Weyl Semimetal with Strong Long-Range Coulomb Interactions”
11. N. Okuma (Department of Physics, University of Tokyo) “g-Factor Renormalization on Surface State of Topological Insulator”
12. N. Okuma (Department of Physics, University of Tokyo) “Study of Spin Transport in Dirac Systems”
13. T. Shibuya (Department of Physics, University of Tokyo) “Spin Transport Dynamics of Topological Surface States in Magnetic Field”
14. N. Yoshioka (Department of Physics, University of Tokyo) “Dirac cones in Hofstadter’s butterfly”
15. S. Suetsugu (Department of Physics, University of Tokyo) “Anomalous Hall Effect in the Dirac Electron Systems with a Split Term”
16. F. Ishii (Kanazawa University) “Thermopower of Doped Quantum Anomalous Hall Insulators: Towards First-Principles Evaluation”
17. A. Fujimoto (Osaka Institute of Technology) “Negative Magnetoresistance in Ti-Cleaned Single Layer Graphene”
18. R. Suemasa (University of Electro-Communications) “Magnetoconductivity and Anomalous g-Factor of the Luttinger Hamiltonian”
19. M. Owada (University of Electro-Communications) “Magnetoconductivity of Dirac Electrons in Bismuth”
20. K. Seki (Riken) “Correlation induced massless Dirac quasi-particles in graphone”
21. K. Kishigi (Kumamoto University) “Quantum oscillations of magnetization in the tight-binding electrons with nearest-neighbor hoppings on a honeycomb lattice”
22. T. Kuraya (University of Electro-Communications) “Band Structure of Superconducting Dirac Electron Systems”
23. H. Masuda (Department of Applied Physics, University of Tokyo) “Two-dimensional Dirac fermions on a Bi square net in nonmagnetic layered pnictides AZnBi2 (A=Sr, Ba)”