"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
基本信息
- 批准号:105459-2012
- 负责人:
- 金额:$ 5.17万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2014
- 资助国家:加拿大
- 起止时间:2014-01-01 至 2015-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Solid helium is the epitome of a "quantum solid" - a crystal whose properties are controlled by quantum statistics rather than by classical mechanics. In the absence of external pressure, quantum motion prevents helium from freezing, even at absolute zero. At low temperatures, liquid helium exhibits unusual behavior, including a spectacular phenomenon - "superfluidity" - with absolutely no flow dissipation. By applying pressure, helium can be crystallized but the solid's properties are still dominated by quantum effects. One of the most surprising predictions was that crystalline order and superfluidity can coexist in solid helium - a new phase of matter known as a "supersolid". Despite decades of experimental effort, it was not until 2004 that convincing evidence of supersolidity was found in solid 4He at temperatures below 200 milliKelvin. Since then, laboratories and theorists around the world have intensively studied solid helium. Despite this effort, and clear evidence that dislocations and other crystal defects are crucially involved, the microscopic basis of supersolidity and even its very existence are still open questions.
固态氦是“量子固体”的缩影--这种晶体的性质是由量子统计学而不是经典力学控制的。 在没有外部压力的情况下,量子运动可以防止氦冻结,即使是在绝对零度下。 在低温下,液氦表现出不寻常的行为,包括一个壮观的现象-“超流”-绝对没有流动耗散。 通过施加压力,氦可以结晶,但固体的性质仍然由量子效应主导。 最令人惊讶的预测之一是,晶体秩序和超流性可以在固体氦中共存-一种被称为“超固体”的新物质相。 尽管经过数十年的实验努力,直到2004年才在温度低于200毫开尔文的固体4 He中发现了令人信服的超固体证据。 从那时起,世界各地的实验室和理论家都在深入研究固态氦。 尽管有这些努力,也有明确的证据表明位错和其他晶体缺陷是至关重要的,但超固体的微观基础,甚至它的存在,仍然是悬而未决的问题。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Beamish, John其他文献
Piezoelectric creep in LiNbO3, PMN-PT and PZT-5A at low temperatures
- DOI:
10.1063/1.5119351 - 发表时间:
2019-11-28 - 期刊:
- 影响因子:3.2
- 作者:
Islam, Md Shahidul;Beamish, John - 通讯作者:
Beamish, John
Intrinsic and dislocation-induced elastic behavior of solid helium
- DOI:
10.1103/physrevb.79.214524 - 发表时间:
2009-06-01 - 期刊:
- 影响因子:3.7
- 作者:
Day, James;Syshchenko, Oleksandr;Beamish, John - 通讯作者:
Beamish, John
Plastic Deformation in a Quantum Solid: Dislocation Avalanches and Creep in Helium
- DOI:
10.1103/physrevlett.121.055301 - 发表时间:
2018-07-30 - 期刊:
- 影响因子:8.6
- 作者:
Cheng, Zhi Gang;Beamish, John - 通讯作者:
Beamish, John
Shear Piezoelectric and Dielectric Properties of LiNbO3, PMN-PT and PZT-5A at Low Temperatures
- DOI:
10.1007/s10909-018-2097-7 - 发表时间:
2019-02-01 - 期刊:
- 影响因子:2
- 作者:
Islam, Md Shahidul;Beamish, John - 通讯作者:
Beamish, John
Low-temperature shear modulus changes in solid 4He and connection to supersolidity
- DOI:
10.1038/nature06383 - 发表时间:
2007-12-06 - 期刊:
- 影响因子:64.8
- 作者:
Day, James;Beamish, John - 通讯作者:
Beamish, John
Beamish, John的其他文献
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{{ truncateString('Beamish, John', 18)}}的其他基金
Mechanical Properties of Quantum Solids: Defects, Deformation and Flow
量子固体的机械特性:缺陷、变形和流动
- 批准号:
RGPIN-2017-04285 - 财政年份:2021
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
Mechanical Properties of Quantum Solids: Defects, Deformation and Flow
量子固体的机械特性:缺陷、变形和流动
- 批准号:
RGPIN-2017-04285 - 财政年份:2020
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
Mechanical Properties of Quantum Solids: Defects, Deformation and Flow
量子固体的机械特性:缺陷、变形和流动
- 批准号:
RGPIN-2017-04285 - 财政年份:2019
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
Mechanical Properties of Quantum Solids: Defects, Deformation and Flow
量子固体的机械特性:缺陷、变形和流动
- 批准号:
RGPIN-2017-04285 - 财政年份:2018
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
Mechanical Properties of Quantum Solids: Defects, Deformation and Flow
量子固体的机械特性:缺陷、变形和流动
- 批准号:
RGPIN-2017-04285 - 财政年份:2017
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2016
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2015
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
429573-2012 - 财政年份:2014
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
429573-2012 - 财政年份:2013
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2013
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
相似海外基金
Supersolidity and the quantum spin liquid state in monolayer of helium
超固体和单层氦中的量子自旋液态
- 批准号:
18H01170 - 财政年份:2018
- 资助金额:
$ 5.17万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Novel Elastic Effect and Possible Supersolidity in Helium Films
氦薄膜中的新颖弹性效应和可能的超固态
- 批准号:
17H02925 - 财政年份:2017
- 资助金额:
$ 5.17万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2016
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2015
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
429573-2012 - 财政年份:2014
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2013
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
429573-2012 - 财政年份:2013
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
105459-2012 - 财政年份:2012
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Individual
"Solid Helium: Supersolidity, Elasticity and Quantum Plasticity"
《固态氦:超固态、弹性和量子可塑性》
- 批准号:
429573-2012 - 财政年份:2012
- 资助金额:
$ 5.17万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
Supersolidity in Helium 4
氦 4 中的超固态
- 批准号:
334327-2006 - 财政年份:2007
- 资助金额:
$ 5.17万 - 项目类别:
Postgraduate Scholarships - Doctoral