| 仲氢及正氘团簇的量子定域和超流动性研究 |
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| 引用本文： | 冯成义,程新路,张红.仲氢及正氘团簇的量子定域和超流动性研究[J].物理学报,2011,60(1):13602-013602. |
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| 作者姓名： | 冯成义 程新路 张红 |
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| 作者单位： | (1)四川大学物理科学与技术学院,成都 610065; (2)四川大学原子与分子物理研究所,成都 610065 |
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| 基金项目： | 国家自然科学基金(批准号:10976019,11074176),教育部留学回国人员启动基金资助的课题. |
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| 摘 要： | 本文采用路径积分Monte Carlo (PIMC)方法研究仲氢团簇和正氘团簇的结构和超流体性质.比较仲氢团簇(分子数N≤40)在T=0.4 K,T=1.6 K的临近能量差和超流比例(superfluid fractions),发现仲氢团簇在T=0.4 K时出现"量子熔化"(quantum melting);研究了仲氢团簇的量子定域(quantum localization)和 "量子熔化"的关系,对T=0.4 K时仲氢及正氘团簇的量子定域与超流动性
关键词：
团簇
量子定域
量子熔化
超流比例
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| 关 键 词： | 团簇 量子定域 量子熔化 超流比例 |
| 收稿时间： | 2010-01-15 |
Superfluidity and quantum localization of para-H2 clusters and ortho-D2 clusters |
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| Feng Cheng-Yi,Cheng Xin-Lu,Zhang Hong.Superfluidity and quantum localization of para-H2 clusters and ortho-D2 clusters[J].Acta Physica Sinica,2011,60(1):13602-013602. |
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| Authors: | Feng Cheng-Yi Cheng Xin-Lu Zhang Hong |
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| Institution: | School of Physics Science and Tecnology, Sichuan Univercity,Chengdu 610065,China;Institute of Atomic and Molecular Physics,Sichuan Univercity,Chengdu 610065,China;School of Physics Science and Tecnology, Sichuan Univercity,Chengdu 610065,China |
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| Abstract: | In this paper, Path-integral Monte Carlo calculations have been performed to study structure and superfluid behavior of para-H2 clusters(number of molecules N≤40).Energy difference and superfluid fractions at T=0.4 K and 1.6 K were compared to explore quantum melting of para-H2 clusters. We discussed the interplay between quantum localization and quantum melting of para-H2 clusters, and the differences between quantum localization and superfluidity of para-H2 and ortho-D2 clusters at T = 0.4 K. |
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| Keywords: | cluster quantum localization quantum melting superfluid fractions |
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