RIKEN Center for Computational Science Computational Materials Science Research Team

Team Leader: Seiji Yunoki (D.Eng.)

Japanese Page

Research Summary

One of our main focuses is to develop state-of-the-art numerical methods such as quantum Monte Carlo methods and tensor network methods including the density matrix renormalization method for simulating ground states as well as quantum dynamics of strongly correlated quantum systems. We are also interested in developing quantum algorithms for quantum many-body systems and quantum computing simulations using classical computers such as Supercomputer Fugaku, as a ground challenge of information science in quest of a new computing paradigm.

Main Research Fields

Interdisciplinary Science & Engineering

Keywords

Condensed matter physics
Materials science

Selected Publications

1. Y. Otsuka, K. Seki, S. Sorella, and S. Yunoki:
"Dirac electrons in the square-lattice Hubbard model with a d-wave pairing field: The chiral Heisenberg universality class revisited"
Physical Review B 102, 235105 (2020).
2. N. C. Costa, K. Seki, S. Yunoki, and S. Sorella:
"Phase diagram of the two-dimensional Hubbard-Holstein model"
Communications Physics 3, 80 (2020).
3. T. Shirakawa, S. Miyakoshi, and S. Yunoki:
"Photoinduced eta pairing in the Kondo lattice model"
Physical Review B 101, 174307 (2020).
4. K. Seki, Y. Otsuka, S. Yunoki, and S. Sorella:
"Fermi-liquid ground state of interacting Dirac fermions in two dimensions"
Physical Review B 99, 125145 (2019)
5. M. Khazaei, A. Mishra, N. S. Venkataramanan, A. K. Singh, and S. Yunoki:
"Recent advances in MXenes: From fundamentals to applications"
Current Opinion in Solid State and Materials Science 23, 164 (2019)
6. Y. Otsuka, K. Seki, S. Sorella, and S. Yunoki:
"Quantum criticality in the metal-superconductor transition of interacting Dirac fermions on a triangular lattice"
Physical Review B 98, 035126 (2018)
7. S. Sorella, K. Seki, O. O. Brovko, T. Shirakawa, S. Miyakoshi, S. Yunoki, and E. Tosatti:
"Correlation-driven dimerization and topological gap opening in isotropically strained graphene"
Physical Review Letters 121, 066402 (2018)
8. M. Khazaei, A. Ranjibar, M. Arai, T. Sasaki, and S. Yunoki:
"Electronic properties and applications of MXenes: a theoretical review"
Journal of Materials Chemistry C 5, 2488 (2017)
9. Y. Otsuka, S. Yunoki, and S. Sorella:
"Universal quantum criticality in metal-insulator transition of two-dimensional interacting Dirac electrons"
Physical Review X 6, 011029 (2016)
10. G. Mazzola, S. Yunoki, and S. Sorella:
"Unexpectedly high pressure for molecular dissociation in liquid hydrogen by electric simulation"
Nature Communications 5, 3487 (2014)

Recent Research Results

Nov. 9, 2018
New insulating state found in stretched graphene

Lab Members

Principal investigator

Seiji Yunoki: Team Leader

Core members

Yuichi Otsuka: Research Scientist
Shigetoshi Sota: Research Scientist
Tomonori Shirakawa: Research Scientist
Hiroshi Ueda: Research Scientist
Takami Tohyama: Senior Visiting Scientist

Contact Information

7-1-26 Minatojima-minami-machi,
Chuo-ku, Kobe, Hyogo
650-0047, Japan
Email: yunoki [at] riken.jp