| 量子相变 |
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| 引用本文： | 蔡玉平,宁如云,韩代朝.量子相变[J].低温与超导,2006,34(2):123-125,148. |
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| 作者姓名： | 蔡玉平 宁如云 韩代朝 |
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| 作者单位： | 军械工程学院基础部,石家庄,050003 |
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| 摘 要： | 量子相变是一种发生在绝对零度,由量子涨落而非热涨落导致的相变现象,满足著名的海森堡不确定关系。通过零温量子临界点的研究,可获知物质系统更广泛范围的行为,包括稀土磁性绝缘体,高温超导体和二维电子气体等。
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| 关 键 词： | 量子相变 伊辛模型 高温超导体 量子霍尔效应 |
| 修稿时间： | 2005年9月22日 |
Quantum phase transitions |
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| Cai Yuping,Ning Ruyun,Han Daizhao.Quantum phase transitions[J].Cryogenics and Superconductivity,2006,34(2):123-125,148. |
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| Authors: | Cai Yuping Ning Ruyun Han Daizhao |
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| Abstract: | Quantum phase transitions occur only at the absolute zero of temperature,driven by quantum fluctuation not thermal fluctuation and dictated by Heisenberg's famous uncertainty principle.A zero-temperature quantum critical point holds the key to understanding a wide range of behavior in many condensed matter systems.Examples include rare-earth magnetic insulators,high-temperature superconductors and two-dimensional electron gases. |
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| Keywords: | Quantum phase transitions Ising model High-temperature superconductors Quantum Hall effects |
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