Spin-charge separation in single-chain compound Sr2CuO3 studied by angle-resolved photoemission
書誌事項
- 公開日
- 1998-05
- 権利情報
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- https://www.elsevier.com/tdm/userlicense/1.0/
- DOI
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- 10.1016/s0038-1098(98)00099-4
- 公開者
- Elsevier BV
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説明
Abstract Angle-resolved photoemission measurements were performed for one-dimensional Sr2CuO3 which consists of single CuO chains. Two dispersive bands were observed near EF in the first half of the Brillouin zone ( k = 0 to π 2 ) of the chain-direction. Both bands have a common maximum point closest to EF at k = π 2 while they show different dispersions of about 0.25 and 1 eV, respectively, with a continuous intensity distribution in between. The less dispersive band is almost diminished in another half of the Brillouin zone ( k = π 2 to π ). These results are consistent with the solution of the one-dimensional Hubbard model as well as the t-J model calculation, suggesting the spin-charge separation in the one-dimensional CuO chain. The experimental results are compared with those of the double-chain compound SrCuO2.
収録刊行物
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- Solid State Communications
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Solid State Communications 106 (8), 543-547, 1998-05
Elsevier BV