Diagonal Stripe States in the Light-doping Region in the Two-dimensional Hubbard Model(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We studied the ground state of the two-dimensional Hubbard model near half filling on the square lattice. Using Variational Monte Carlo method, we show that the diagonal stripe state of bond-centered type, in which the domain wall is located between two sites, becomes more stable than the vertical stripe state when the doping hole density x is as low as x ⋍ 0.06. The inverse of stripe periodicity δ and the hole density x are observed to have the relationship δ〜 x (δ < x) for the bond-centered diagonal stripe state (the vertical stripe state) in the light-doping region. These results are in good agreement with elastic neutron scattering experiments in La_<2-x>Sr_xCuO_4.
- 社団法人日本物理学会の論文
- 2004-07-15
著者
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YANAGISAWA Takashi
National Institute of Advanced Industrial Science and Technology
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Yamaji Kunihiko
Institute Of Materials Science University Of Tsukuba:electrotechnical Laboratory
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Yanagisawa T
Nanoelectronics Research Institute Aist
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Yanagisawa T
Graduate School Of Science And Technology Niigata University
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MIYAZAKI Mitake
Hakodate National College of Technology
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MIYAZAKI Mitake
Department of Physics and Mathematics, Aoyama Gakuin University
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YAMAJI Kunihiko
National Institute of Advanced Industrial Science and Technology
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Yanagisawa Takashi
Nanoelectronics Research Institute Aist
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Yamaji Kunihiko
Aist Ibaraki
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Yamaji K
Nanoelectronics Research Institute Aist
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Miyazaki M
Faculty Of Science Himeji Institute Of Technology
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Yanagisawa Takashi
National Inst. Crop Sci. Ibaraki Jpn
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Yanagisawa Takashi
National Agricultural Research Center for the Western Region
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