Recent activities by Nobuo Furukawa

Papers

1. Quasi Long Range Order of Defects in Frustrated Antiferromagnetic Ising Models on Spatially Anisotropic Triangular Lattices,
   Masahiro Sato, Naoyuki Watanabe, and Nobuo Furukawa,
   J. Phys. Soc. Jpn. 82, No.7,073002 (2013).
   

   URL: http://jpsj.ipap.jp/link?JPSJ/82/073002
   DOI: 10.7566/JPSJ.82.073002
   

2. Electromagnon in multiferroic materials with Dzyaloshinsky-Moriya-interaction-induced helical spin structure,
   Shin Miyahara, Nobuo Furukawa,
   Journal of the Korean Physical Society July 2013, Volume 62, Issue 12, pp 1763-1768.
   

   DOI: 10.3938/jkps.62.1763

3. Carrier multiplication and separation in systems with strong electron interaction,
   W. Koshibae, N. Furukawa, and N. Nagaosa,
   Phys. Rev. B 87, 165126 (2013)

4. Spin state and spectroscopic modes of multiferroic BiFeO₃,
   Randy S. Fishman, Jason T. Haraldsen, Nobuo Furukawa, S. Miyahara,
   Phys. Rev. B 87, 134416 (2013).

5. Identifying the spectroscopic modes of multiferroic BiFeO3,
   Randy S. Fishman, Nobuo Furukawa, Jason T. Haraldsen, Masaaki Matsuda, and Shin Miyahara,
   Phys. Rev. B 86,220402(R)/1-5 (2012).

6. Spontaneous fourfold-symmetry breaking driven by electron-lattice coupling and strong correlations in high-T_c cuprates,
   S. Okamoto, N. Furukawa,
   Phys. Rev. B 86,094522 (2012).

   URL: http://link.aps.org/doi/10.1103/PhysRevB.86.094522
   DOI: 10.1103/PhysRevB.86.094522

7. Comprehensive study of the ferroelectricity induced by the spin-dependent d-p hybridization mechanism in Ba2XGe2O7 (X = Mn, Co, and Cu),
   H. Murakawa, Y. Onose, S. Miyahara, N. Furukawa, Y. Tokura,
   Phys. Rev. B 85, 174106/1-10 (2012)

   URL: http://link.aps.org/doi/10.1103/PhysRevB.85.174106
   DOI: 10.1103/PhysRevB.85.174106
   

8. Nonreciprocal Directional Dichroism and Toroidalmagnons in Helical Magnets,
   S. Miyahara and N. Furukawa,
   J. Phys. Soc. Jpn. 81 (2012) 023712/1-4.
   URL: http://jpsj.ipap.jp/link?JPSJ/81/023712

9. Chirality of Matter Shows Up via Spin Excitations,
   Sandor Bordacs, Istvan Kezsmarki, David Szaller, Laszlo Demko, Noriaki Kida, Hiroshi Murakawa, Yoshinori Onose, Ryo Shimano, Toomas Room, Urmas Nagel, Shin Miyahara, Nobuo Furukawa, Yoshinori Tokura,
   Nature Physics 8, 734–738 (2012)

   URL: http://www.nature.com/nphys/journal/v8/n10/full/nphys2387.html
   doi:10.1038/nphys2387

10. Raman scattering due to a one-magnon excitation process in MnV₂O₄,
    S. Miyahara, K. Takubo, T. Suzuki, T. Katsufuji, and N. Furukawa,
    arxiv:1012.4073

11. Bond Orders in a Frustrated Itinerant System on a Kagome Lattice,
    T. Hasegawa and N. Furukawa,
    J.Phys.Conf.Ser. 320 (2011) 012066/1-6.
    URL: http://iopscience.iop.org/1742-6596/320/1/012066
    doi:10.1088/1742-6596/320/1/012066
    

12. Orbital degeneracy and Mott transition in Mo pyrochlore oxides,
    Yukitoshi Motome and Nobuo Furukawa,
    J.Phys.Conf.Ser. 320 (2011) 012060/1-6.
    URL: http://iopscience.iop.org/1742-6596/320/1/012060/
    doi:10.1088/1742-6596/320/1/012060
    arxiv:1107.2986

13. Quantum Monte Carlo study of the transverse-field Ising model on a frustrated checkerboard lattice,
    H. Ishizuka, Y. Motome, N. Furukawa, and S. Suzuki,
    J.Phys.Conf.Ser. 320 (2011) 012054/1-6.
    URL: http://iopscience.iop.org/1742-6596/320/1/012054/
    doi:10.1088/1742-6596/320/1/012054
    arxiv:1107.4180.
    

14. Theory of spin-phonon coupling in multiferroic manganese perovskites RMnO₃,
    Masahito Mochizuki, Nobuo Furukawa, and Naoto Nagaosa,
    Phys. Rev. B 84, 144409/1-14 (2011).
    (Editors' Suggestion)
    URL: http://link.aps.org/doi/10.1103/PhysRevB.84.144409
    DOI: 10.1103/PhysRevB.84.144409
    

15. Evolution of phonon Raman spectra with orbital ordering in MnV₂O₄,
    K. Takubo, R. Kubota, T. Suzuki, T. Kanzaki, S. Miyahara, N. Furukawa, and T. Katsufuji,
    Phys. Rev. B. 84, 094406/1-8 (2011).
    URL: http://link.aps.org/doi/10.1103/PhysRevB.84.094406
    DOI: 10.1103/PhysRevB.84.094406
    

16. Quantum Monte Carlo study of the formation of molecularpolarizations and the antiferroelectric ordering in squaric acid crystals,
    Hiroaki Ishizuka, Yukitoshi Motome, Nobuo Furukawa, Sei Suzuki,
    Phys. Rev. B. 84, 064120/1-6 (2011).
    URL: http://link.aps.org/doi/10.1103/PhysRevB.84.064120
    DOI: 10.1103/PhysRevB.84.064120
    arxiv:1105.4247

17. Theory of magnetoelectric resonance in two-dimensional S = 3/2 antiferromagnet Ba2CoGe2O7 via spin-dependent metal-ligand hybridization mechanism,
    S. Miyahara and N. Furukawa,
    J. Phys. Soc. Jpn. 80 (2011) 073708/1-4.
    arXiv:1101.3679 JPSJ online.

18. Non-local network-excitation in the Ising antiferromagnet on the anisotropic triangular lattice,
    Chisa Hotta, Tetsuhiro Kiyota, Nobuo Furukawa,
    EPL 93 (2011) 47001/1-5.

19. Photo-induced insulator-metal transition of a spin-electron coupled system,
    W. Koshibae, N. Furukawa, N. Nagaosa,
    EPL 94 (2011) 27003/1-5. arxiv:1007.0061

20. Theory of magnetic switching of ferroelectricity in spiral magnets,
    Masahito Mochizuki, Nobuo Furukawa,
    Phys. Rev. Lett. 105, 187601/1-4 (2010).
    URL: http://link.aps.org/doi/10.1103/PhysRevLett.105.187601
    DOI: 10.1103/PhysRevLett.105.187601

21. Electronic phase separation in the pyrochlore double-exchange model,
    Yukitoshi Motome and Nobuo Furukawa,
    Phys. Rev. B 82, 060407(R)/1-4 (2010).
    URL: http://link.aps.org/doi/10.1103/PhysRevB.82.060407
    DOI: 10.1103/PhysRevB.82.060407
    Arxiv: http://arxiv.org/abs/1008.2786

22. Ferroelectricity induced by spin-dependent metal-ligand hybridization in Ba₂CoGe₂O₇ ,
    H. Murakawa, Y. Onose, S. Miyahara, N. Furukawa and Y. Tokura,
    Phys. Rev. Lett. 105, 137202/1-4 (2010).
    URL: http://link.aps.org/doi/10.1103/PhysRevLett.105.137202
    DOI: 10.1103/PhysRevLett.105.137202
    Arxiv: http://arxiv.org/abs/1005.4986.
    

23. Spin model of magnetostrictions in multiferroic Mn perovskites,
    Masahito Mochizuki, Nobuo Furukawa, and Naoto Nagaosa,
    Phys. Rev. Lett. 105, 037205 (2010).
    URL: http://prl.aps.org/abstract/PRL/v105/i3/e037205.
    

24. Electromagnons in the multiferroic state of perovskite manganites with symmetric-exchange striction,
    Y. Takahashi, S. Ishiwata, S. Miyahara, Y. Kaneko, N. Furukawa, Y. Taguchi, R. Shimano, and Y. Tokura,
    Phys. Rev. B81, 100413(RC)/1-4 (2010).
    URL: http://link.aps.org/doi/10.1103/PhysRevB.81.100413
    DOI: 10.1103/PhysRevB.81.100413
    arXiv:1002.3676.

25. Theory of electromagnon in the multiferroic Mn perovskites: Vital role of higher harmonic components of the spiral spin order,
    Masahito Mochizuki, Nobuo Furukawa, Naoto Nagaosa,
    Phys. Rev. Lett. 104, 177206/1-4 (2010).
    URL: http://link.aps.org/doi/10.1103/PhysRevLett.104.177206
    DOI: 10.1103/PhysRevLett.104.177206
    (arXiv:1001.3905).

26. Roles of Bond Alternation in Magnetic Phase Diagram of RMnO₃,
    Nobuo Furukawa, Masahito Mochizuki,
    J. Phys. Soc. Jpn. 79 No.3 (2010) 033708/1-4,
    URL: http://jpsj.ipap.jp/link?JPSJ/79/033708 ,
    DOI: 10.1143/JPSJ.79.033708.
    

27. Creation of vortices by ferromagnetic order in ErNi₂B₂C,
    Hazuki Kawano-Furukawa, Yoko Ishida, Fumiko Yano, Rieko Nagatomo, Ayano Noda, Takashi Nagata, Seiko Ohira-Kawamura, Chiyako Kobayashi, Hideki Yoshizawa, Ken Littrell, Barry L. Winn, Nobuo Furukawa and Hiroyuki Takeya,
    Physica C 470 Supplement 1, S716-S718 (2010).
    

28. Phase competition in the double-exchange model on the frustrated pyrochlore lattice,
    Yukitoshi Motome and Nobuo Furukawa,
    Phys. Rev. Lett. 104, 106407/1-4 (2010).
    (arXiv:1002.3643)
    URL: http://link.aps.org/doi/10.1103/PhysRevLett.104.106407
    DOI: 10.1103/PhysRevLett.104.106407
    

29. Ferromagnetic transition in the double-exchange model on the pyrochlore lattice,
    Y. Motome and N. Furukawa,
    J. Phys. Conf. Ser. 200, 012131/1-3 (2010).
    (arXiv:1002.3642)
    doi: 10.1088/1742-6596/200/1/012131

30. Electromagnon in one-dimensional frustrated chain,
    T. Hasegawa, S. Miyahara and N. Furukawa,
    J. Phys.: Conf. Ser. 200 (2010) 012053/1-3.
    doi: 10.1088/1742-6596/200/1/012053
    

31. Self-organized quantum transitions in a spin-electron coupled system,
    W. Koshibae, N. Furukawa, N. Nagaosa,
    Phys. Rev. Lett. 103, 266402/1-4 (2009) ,
    DOI: 10.1103/PhysRevLett.103.266402.
    

32. Novel Multiferroic State of Eu_1-xY_xMnO₃ in High Magnetic Fields,
    M. Tokunaga, Y. Yamasaki, Y. Onose, M. Mochizuki, N. Furukawa, and Y. Tokura,
    Phys. Rev. Lett. 103, 187202/1-4 (2009).
    DOI: 10.1103/PhysRevLett.103.187202

33. Microscopic Model and Phase Diagrams of the Multiferroic Perovskite Manganites,
    M. Mochizuki and N. Furukawa,
    Phys. Rev. B80, 134416/1-22 (2009).
    URL: http://link.aps.org/doi/10.1103/PhysRevB.80.134416
    DOI: 10.1103/PhysRevB.80.134416

34. Frustrated Metals on a Triangular Lattice,
    N. Furukawa, S. Miyahara and C. Hotta,
    Int. J. Mod. Phys. C 20 (2009) 1477-1484.
    DOI: 10.1142/S0129183109014539

35. Composite domain walls in a multiferroic perovskite ferrite,
    Yusuke Tokunaga, Nobuo Furukawa, Hideaki Sakai, Yasujiro Taguchi, Taka-hisa Arima, Yoshinori Tokura,
    Nature Mat. 8 (2009) 558-562.
    DOI:10.1038/nmat2469
    

36. Systematics of electromagnons in the spiral spin ordered states of RMnO₃,
    J. S. Lee, N. Kida, S. Miyahara, Y. Takahashi, Y. Yamasaki, R. Shimano, N. Furukawa, and Y. Tokura,
    Phys. Rev. B79 (2009) 180403(RC)/1-4.
    URL: http://link.aps.org/doi/10.1103/PhysRevB.79.180403
    DOI: 10.1103/PhysRevB.79.180403

37. Terahertz time-domain spectroscopy of electromagnons in multiferroic perovskite manganites,
    N. Kida, Y. Takahashi, J. S. Lee, R. Shimano, Y. Yamasaki, Y. Kaneko, S. Miyahara, N. Furukawa, T. Arima, and Y. Tokura,
    J. Opt. Soc. Am. B 26, A35-A51 (2009).
    DOI: doi:10.1364/JOSAB.26.000A35
    

38. Mechanism of Lattice-Distortion-Induced Electric-Polarization Flop in the Multiferroic Perovskite Manganites,
    Masahito Mochizuki and Nobuo Furukawa,
    J. Phys. Soc. Jpn. 78 (2009) 053704/1-4.
    URL: http://jpsj.ipap.jp/link?JPSJ/78/053704/
    DOI: 10.1143/JPSJ.78.053704

39. Momentum Distributions of a Spinless Fermion t-V Model on a Triangular Lattice in the Strong Coupling Region ,
    K. Matsuda, S. Miyahara, and N. Furukawa,
    J. Phys.: Conf. Ser. 150, 042118/1-4 (2009) .
    DOI: doi: 10.1088/1742-6596/150/4/042118
    

40. Dynamics of multiferroic domain wall in spin-cycloidal ferroelectric DyMnO₃,
    F. Kagawa, M. Mochizuki, Y. Onose, H. Murakawa, Y. Kaneko, N. Furukawa, and Y. Tokura,
    Phys. Rev. Lett. 102, 057604/1-4 (2009) .
    DOI: 10.1103/PhysRevLett.102.057604

41. Variational Monte Carlo Study of a Spinless Fermion t-V Model on a Triangular Lattice: Formation of a Pinball Liquid,
    Mitake Miyazaki, Chisa Hotta, Shin Miyahara, Keisuke Matsuda, Nobuo Furukawa,
    J. Phys. Soc. Jpn. 78 No.1 (2009) 014707/1-7.
    DOI: 10.1143/JPSJ.78.014707
    

42. Theory of electric field induced one-magnon resonance in cycloidal spin magnets,
    S. Miyahara, N. Furukawa,
    arXiv:0811.4082

43. Evidence for an electric-dipole active continuum band of spin excitations in multiferroic TbMnO₃ ,
    Y. Takahashi, N. Kida, Y. Yamasaki, J. Fujioka, T. Arima, R. Shimano, S. Miyahara, M. Mochizuki, N. Furukawa, and Y. Tokura,
    Phys. Rev. Lett. 101, 187201/1-4 (2008).
    DOI: 10.1103/PhysRevLett.101.187201

44. Projection Method for Exact Diagonalization in the Strong Coupling Limit for Frustrated Models with Highly Degenerate Ground States,
    K. Matsuda, S. Miyahara, and N. Furukawa,
    J. Phys. Soc. Jpn. 77 No. 8 (2008) 085002/1-2.
    URL: http://jpsj.ipap.jp/link?JPSJ/77/085002/
    DOI: 10.1143/JPSJ.77.085002
    (arXiv:0806.2197)
    

Papers in Japanese

• マルチフェロイック希土類Mnペロフスカイトにおける電気磁気現象の理論,
  望月維人、古川信夫、永長直人,
  固体物理 46 No.2 (2011) 55-73.

• マルチフェロイックスにおけるエレクトロマグノン励起,
  望月維人、古川信夫、永長直人,
  日本物理学会誌 66 No.4 (2011) 280-284.

• 異方的三角格子上の電荷のフラストレーション,
  堀田知佐、古田信夫,
  固体物理 45 No.5 (2010)

その他：
• articles
• books

Old papers

• 1992-1997 in ISSP, Univ. Tokyo.
  
• 1997-1998 in ETH-Zurich
  
• 1998-2000 in Aoyama Gakuin Univ.
  
• 2001-2003 in Aoyama Gakuin Univ.
  
• 2004-2007 in Aoyama Gakuin Univ.
  

Cond-Mat

• Search Furukawa at xxx.lanl.gov.

Prize