論文リスト(全部)

1. Nuclear-spin-lattice relaxation in a nu=1 bilayer quantum Hall state
   N. Kumada, K. Muraki, and Y. Hirayama
   to be published in Physica E

2. Anisotropic magnetotransport near the nu=2/3 quantum Hall state
   M. Moriono, K. Iwata, M. Suzuki, A. Fukuda, A. Sawada, Z. F. Ezawa, N. Kumada, and Y. Hirayama
   to be published in Physica E

3. Stability of Soliton Lattice phase in the nu=1 Bilayer Quantum Hall State under Tilted Magnetic Fields
   D. Terasawa, A. Fukuda, S. Kozumi, Z. F. Ezawa, A. Sawada, N. Kumada, and Y. Hirayama
   to be published in Physica E

4. Quantum Transport Study of a Canted Antiferromagnetic Phase in nu=2 Bilayer Quantum Hall State
   A. Fukuda, S. Kozumi, D. Terasawa, Y. Shimoda, N. Kumada, Y. Hirayama, Z. F. Ezawa, and A. Sawada
   to be published in Physica E

5. Magnetotransport Study of the Canted Antiferromagnetic Phase in Bilayer nu=2 Quantum Hall State
   A. Fukuda, S. Kozumi, D. Terasawa, Y. Shimoda, N. Kumada, Y. Hirayama, Z. F. Ezawa, and A. Sawada
   to be published in Phys. Rev. B

6. Magnetoresistance Peak in the nu=2 Bilayer Quantum Hall State under Tilted Magnetic Field
   A. Fukuda, S. Kozumi, D. Terasawa, N. Kumada, Y. Hirayama, Z. F. Ezawa, and A. Sawada
   to be published in proceedings of LT

7. Anisotropic behavior of hysterestic transport phenomena in the nu=2/3 quantum Hall state in the tilted magnetic field
   K. Iwata, M. Moriono, A. Fukuda, A. Sawada, Z. F. Ezawa, M. Suzuki, N. Kumada, and Y. Hirayama
   to be published in proceedings of LT

8. Anisotropic Magnetotransport Near The Bilayer nu=2/3 Quantum Hall State
   M. Moriono, K. Iwata, M. Suzuki, A. Fukuda, A. Sawada, Z. F. Ezawa, N. Kumada, and Y. Hirayama
   to be published in proceedings of LT

9. Effects of inversion asymmetry on electron-nuclear spin coupling in semiconductor heterostructures: A possible role of spin-orbit interactions
   K. Hashimoto, K. Muraki, N. Kumada, and Y. Hirayama
   Phys. Rev. Lett. 94, 146601 (2005)

10. Pseudospin domain of nu=1 double-layer quantum Hall state near commensurate-incommensurate transition
    D. Terasawa, S. Kozumi, A. Fukuda, A. Sawada, Z. F. Ezawa N. Kumada, and Y. Hirayama
    Journal of Physics and Chemistry of Solids 66, 1560 (2005)

11. Anisotropic magnetotransport around the nu=1 bilayer quantum Hall state
    K. Iwata, M. Moriono, M. Suzuki, A. Fukuda, A. Sawada, Z. F. Ezawa N. Kumada, and Y. Hirayama
    Journal of Physics and Chemistry of Solids 66, 1556 (2005)

12. Spin degree of freedom in the nu =1 bilayer electron system investigated by nuclear spin relaxation
    N. Kumada, K. Muraki, K. Hashimoto, and Y. Hirayama
    Phys. Rev. Lett. 94, 096802 (2005)

13. Strong to weak correlation phase transition at nu_T=1 in a bilayer system detected by nuclear-spin-relaxation time
    N. Kumada, K. Muraki, K. Hashimoto, T. Saku, and Y. Hirayama
    proceedings of ICPS-27

14. Double magnetoresistance minima for nu=1 quantum Hall state near commensurate-incommensurate transition
    D. Terasawa, K. Nakada, S. Kozumi, A. Fukuda, A. Sawada, Z. F. Ezawa N. Kumada, K. Muraki, T. Saku, and Y. Hirayama
    proceedings of ICPS-27

15. In-plane filed induced anisotropy of the longitudinal resistance in a bilayer quantum Hall system
    M. Morino, K. Iwata, M. Suzuki, A. Fukuda, A. Sawada, Z. F. Ezawa, N. Kumada, K. Muraki, T. Saku, and Y. Hirayama
    proceedings of ICPS-27

16. Duoble magnetoresistance minima induced by the in-plane magnetic field for the nu=1 double-layer quantum Hall st ate
    D. Terasawa, K. Nakada, S. Kozumi, Z. F. Ezawa, A. Fukuda, A. Sawada, N. Kumada, K. Muraki, T. Saku, and Y. Hirayama
    Int. J. Mod. Phys. B 18, 3709 (2004)

17. Anisotropic transport on the nu=1 bilayer quantum Hall system under tilted magnetic filed
    M. Morino, K. Iwata, M. Suzuki, Z. F. Ezawa, A. Sawada, N. Kumada, K. Muraki, T. Saku, and Y. Hirayama
    Int. J. Mod. Phys. B 18, 3705 (2004)

18. Phase diagrams of nu=2 and nu=2/3 quantum Hall states in bilayer systems
    N. Kumada, D. Terasawa, M. Moriono, K. Tagashira, A. Sawada, E. F. Ezawa, K. Muraki, Y. Hirayama and T. Saku
    Phys. Rev. B 69, 155319 (2004)

19. Simultaneous excitation of spins and pseudospins in the bilayer nu = 1 quantum hall state
    D. Terasawa, M. Morino, K. Nakada, S. Kozumi, A. Sawada, Z. F. Ezawa, N. Kumada, K. Muraki, T. Saku and Y. Hirayama
    Physica E 22, 52 (2004)

20. Effects of in-plane magnetic fields on spin transitions in bilayer quantum Hall states
    N. Kumada, K. Tagashira, K. Iwata, A. Sawada, Z. F. Ezawa, K. Muraki, T. Saku and Y. Hirayama
    Physica E 22, 36 (2004)

21. Continuous transformation from spin- to pseudospin-type excitation
    A. Sawada, D. Terasawa, N. Kumada, M. Morino, K. Tagashira, Z. F. Ezawa, K. Muraki, T. Saku and Y. Hirayama
    Physica E 18, 118 (2003)

22. Composite fermion interactions in bilayer nu=2/3 quantum Hall states
    N. Kumada, Y. Shimoda, M. Morino, A. Sawada, E. F. Ezawa, K. Muraki, T. Saku, and Y. Hirayama
    Proceedings of ICPS-26

23. Phase diagram of interacting composite fermions in the bilayer nu=2/3 quantum Hall effect
    N. Kumada, D. Terasawa, Y. Shimoda, H. Azuhata, A. Sawada, E. F. Ezawa, K. Muraki, T. Saku and Y. Hirayama
    Phys. Rev. Lett. 89, 116802 (2002)

24. Integer and fractional quantum Hall effects in bilayer electron systems
    Z. F. Ezawa, A. Sawada and N. Kumada
    J. Phys. Chem. Solid 63, 1298 (2002)

25. Various phase transitions in nu=2/3 bilayer quantum Hall states
    N. Kumada, D. Terasawa, Y. Shimoda, H. Azuhata, A. Sawada, E. F. Ezawa, K. Muraki, T. Saku and Y. Hirayama
    Physica E 12, 32 (2002)

26. Preferred number of flipped spins in Skyrmion excitation
    N. Kumada, A. Sawada, E. F. Ezawa, H. Azuhata, S. Nagahama, K. Muraki, T. Saku and Y. Hirayama
    Physica B 298, 169 (2001)

27. Skyrmion excitations in monolayer nu=1 and bilayer nu=2 quantum Hall states
    N. Kumada, A. Sawada, E. F. Ezawa, S. Nagahama, H. Azuhata, and T. Saku
    Proceedings of ICPS-25

28. Doubly enhanced skyrmions in nu=2 bilayer quantum Hall states
    N. Kumada, A. Sawada, E. F. Ezawa, H. Azuhata, S. Nagahama, K. Muraki, T. Saku and Y. Hirayama
    J. Phys. Soc. Jpn. 69, 3178 (2000)

29. n(+)-GaAs back-gated double-quantum-well structures with full density control
    K. Muraki, N. Kumada T. Saku and Y. Hirayama
    Jpn. J. Appl. Phys. 39, 2444 (2000)

30. Bilayer nu=2 quantum Hall state in parallel high magnetic field
    A. Sawada, E. F. Ezawa, H. Ohno, Y. Horikoshi, N. Kumada, Y. Ohno, S. Kishimoto, F. Matsukura and S. Nagahama
    Physica E 6, 615 (2000)

31. Interlayer charge transfer in bilayer quantum Hall states at various filling factors
    K. Muraki, T. Saku, Y. Hirayama, N. Kumada, A. Sawada and Z. F. Ezawa
    Solid State Commun. 112, 625 (1999)

32. Interlayer coherence in nu=1 and nu=2 bilayer quantum Hall states
    A. Sawada, E. F. Ezawa, H. Ohno, Y. Horikoshi, A. Urayama, Y. Ohno, S. Kishimoto, F. Matsukura and N. Kumada
    Phys. Rev. B 59, 14888 (1999)