Abstract
Dynamical longitudinal spin susceptibility cursive chizz (q, ω) and charge density susceptibility cursive chinn (q, ω) are evaluated within random phase approximation for incommensurate spin density waves, or stripes, in two dimensional Hubbard model. Taking into account all possible higher harmonics of the fundamental component of the order parameter, we calculate these quantities for the full ranges of the momentum and energy, and analyze collective modes related to the motion of the stripe line. The anisotropy of the dispersion cone comes from the moving pattern of the stripes, i.e., the compression mode or the meandering mode. In the metallic stripe, there are also nesting excitations of the parallel sheet of the Fermi surfaces. We also discuss the excitation of the silent position in the insulating stripe.
| Original language | English |
|---|---|
| Pages (from-to) | 866-876 |
| Number of pages | 11 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 70 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2001 |
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Keywords
- Collective modes
- Dynamical susceptibility
- Hubbard model
- Incommensurate spin density wave
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Spin and Charge Excitations in Incommensurate Spin Density Waves. / Kaneshita, Eiji; Ichioka, Masanori; Machida, Kazushige.
In: Journal of the Physical Society of Japan, Vol. 70, No. 3, 03.2001, p. 866-876.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spin and Charge Excitations in Incommensurate Spin Density Waves
AU - Kaneshita, Eiji
AU - Ichioka, Masanori
AU - Machida, Kazushige
PY - 2001/3
Y1 - 2001/3
N2 - Dynamical longitudinal spin susceptibility cursive chizz (q, ω) and charge density susceptibility cursive chinn (q, ω) are evaluated within random phase approximation for incommensurate spin density waves, or stripes, in two dimensional Hubbard model. Taking into account all possible higher harmonics of the fundamental component of the order parameter, we calculate these quantities for the full ranges of the momentum and energy, and analyze collective modes related to the motion of the stripe line. The anisotropy of the dispersion cone comes from the moving pattern of the stripes, i.e., the compression mode or the meandering mode. In the metallic stripe, there are also nesting excitations of the parallel sheet of the Fermi surfaces. We also discuss the excitation of the silent position in the insulating stripe.
AB - Dynamical longitudinal spin susceptibility cursive chizz (q, ω) and charge density susceptibility cursive chinn (q, ω) are evaluated within random phase approximation for incommensurate spin density waves, or stripes, in two dimensional Hubbard model. Taking into account all possible higher harmonics of the fundamental component of the order parameter, we calculate these quantities for the full ranges of the momentum and energy, and analyze collective modes related to the motion of the stripe line. The anisotropy of the dispersion cone comes from the moving pattern of the stripes, i.e., the compression mode or the meandering mode. In the metallic stripe, there are also nesting excitations of the parallel sheet of the Fermi surfaces. We also discuss the excitation of the silent position in the insulating stripe.
KW - Collective modes
KW - Dynamical susceptibility
KW - Hubbard model
KW - Incommensurate spin density wave
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UR - http://www.scopus.com/inward/citedby.url?scp=0035645781&partnerID=8YFLogxK
U2 - 10.1143/JPSJ.70.866
DO - 10.1143/JPSJ.70.866
M3 - Article
AN - SCOPUS:0035645781
VL - 70
SP - 866
EP - 876
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
ER -