Metal-insulator transition and spin gap in the spin-12 ladder system Sr14−xAxCu24O41 (A Ba and Ca)
✍ Scribed by Masatsune Kato; Kazunori Shiota; Yoji Koike
- Book ID
- 108025049
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 698 KB
- Volume
- 258
- Category
- Article
- ISSN
- 0921-4534
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We have investigated the transport and magnetic properties of the spin-½ ladder system with two legs, Sr14\_~AxCu2404~ (A = Ba and Ca). For x ~ 0, the electrical resistivity p exhibits semiconductive behavior. It becomes more insulating with the increase in x(Ba), while it becomes more conductive wi
We have found that the (Sro.4Ca0.6)14Cu24\_xCOxO41\_ 8 system shows a metal-insulator transition at Co content x between 4.0 and 4.5 after high-pressure 0 2 annealing. For the as-sintered samples the T dependence of the electrical resistivities is semiconducting over the whole x range and the associ