| Bipolaron in different configuration of quantum confinement |
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| 作者姓名： | 阮永红 陈庆虎 焦正宽 |
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| 作者单位： | Department of Physics，Zhejiang University，Hangzhou 310027，China，Department of Physics，Zhejiang University，Hangzhou 310027，China，Department of Physics，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | Project (No. 19804009) supported by the National Natural Sci-
ence Foundation of China |
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| 摘 要： | INTRODUCTION The bipolaron in bulk materials has been ex-tensively discussed in the past decade. With morerecent advances in the creation of nanocrystal withstrong ionic coupling (Hudgins et al., 1997), onenatural problem is that the effect of bipolarons insome quantum low dimensional systems with ef-fective electron-phonon coupling is very strongowing to the confinement. This problem is alsorelevant to the proposal of the bipolaronic mecha-nism for pairing in CuO2 plane (quasi-tw…
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Bipolaron in different configuration of quantum confinement |
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| RUAN Yong-hong ?,CHEN Qing-hu,JIAO Zheng-kuan.Bipolaron in different configuration of quantum confinement[J].Journal of Zhejiang University Science,2004(7). |
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| Authors: | RUAN Yong-hong ? CHEN Qing-hu JIAO Zheng-kuan |
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| Abstract: | The authors used Landau-Pekar variational method to investigate a strong-coupling singlet optical bipolaron in different configuration of quantum confinement. Numerical and analytical results showed that when configuration changes from quantum dot and wire to well, confinement shows different effect on the formation of a bipolaron. In contrast to a bipolaron in a quantum dot or wire, the binding energy of a bipolaron in a quantum well increases with increasing con- finement, indicating that confinement favors bipolaron formation in a quantum well. |
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| Keywords: | Bipolaron Quantum confinement Quantum wire Quantum well Quantum dot Binding energy |
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