Superconductor-(Metal)-Insulator Transitions: Understanding the Emergence of Metallic States, A Continuation Proposal
超导体-(金属)-绝缘体转变:了解金属态的出现,延续提案
基本信息
- 批准号:2307132
- 负责人:
- 金额:$ 72.76万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2023
- 资助国家:美国
- 起止时间:2023-08-01 至 2026-07-31
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Nontechnical Abstract: An increasing number of recent experiments reveal a possible “anomalous metallic state” (AMS), which exhibits properties that cannot be understood on the basis of “standard paradigms” of electrons in solid-state systems. The project aims to explore the extent of the emergence of the anomalous metallic phase and its relation to a failed superconducting and/or insulating states. Furthermore, the project explores possible variants of the AMS in multiple cases. Results are expected to shed light on a new class of metallic states of matter and will have an impact on physics as a discipline, on education and on society. Pointing to a lack of full understanding of one of the fundamental types of substances in nature, it ought to trigger curiosity at all levels of society, thus helping to enhance our scientific understanding and possible impact technological applications.Technical Abstract: An increasing number of recent experiments on disordered superconducting films, initially searching for a superconductor-insulator transition (SIT), have been pointing to the possibility of a zero-temperature transition from a superconductor to an “anomalous metallic state” (AMS) that features properties of a “failed superconductor.” This state exhibits significant superconducting correlations, yet the system fails to globally condense even at zero temperature, settling at a finite conductivity through a quantum superconductor to metal transition (QSMT). Furthermore, where strongly inhomogeneous systems are studied, charging energy of the superconducting islands, which typically leads to an insulating state through Coulomb blockade, can experience charge fluctuations when weakened, preventing the establishment of a true insulator. As observation of deviations from the “standard paradigm,” particularly in the limit of two-dimensions, have been fast accumulating, it becomes clear that there exists a new class of metallic states as the temperature tends to zero, where the electronic properties cannot remotely be understood on the basis of Fermi liquid and Drude theories, thus pointing to a new paradigm for metallic states in nature. Exploring SIT and the emergence of anomalous metallic states and their properties are the focus of this projects. This is achieved through focus on enhanced phase fluctuations materials either using highly granular films or unconventional superconductors such as superconductor/ferromagnet bilayers, as well as low-temperature magneto-transport measurements including sensitivity to external perturbations and improved mutual-inductance probe for the study of superfluid response.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
非技术摘要:最近越来越多的实验揭示了一种可能的“异常金属态”(AMS),它表现出无法根据固态系统中电子的“标准范式”来理解的性质。该项目旨在探索异常金属相出现的程度及其与失败的超导和/或绝缘状态的关系。此外,该项目还探讨了AMS在多种情况下的可能变体。预计结果将揭示一类新的金属物质状态,并将对物理学作为一门学科,教育和社会产生影响。指出缺乏充分了解的基本类型的物质在自然界中,它应该引发好奇心在社会各个层面,从而有助于提高我们的科学理解和可能的影响技术应用。技术摘要:最近越来越多的无序超导薄膜实验,最初是为了寻找超导体-绝缘体转变(SIT),一直在指出从超导体到“异常金属态”(AMS)的零温度转变的可能性,这种转变具有“失效超导体”的特性。这种状态表现出显着的超导相关性,但即使在零温度下,系统也无法全局凝聚,通过量子超导体到金属过渡(QSMT)以有限的电导率稳定下来。此外,在研究强非均匀系统的情况下,超导岛的充电能量(通常通过库仑阻塞导致绝缘状态)在减弱时可能会经历电荷波动,从而防止建立真正的绝缘体。随着对偏离“标准范式”的观察,特别是在二维极限下,已经迅速积累,很明显,当温度趋于零时,存在一类新的金属态,其中的电子性质不能根据费米液体和德鲁德理论来理解,从而指出了自然界中金属态的新范式。探索SIT和异常金属态的出现及其性质是该项目的重点。这是通过关注增强的相位波动材料来实现的,这些材料使用高度颗粒状的膜或非常规的超导体,例如超导体/铁磁体双层,以及低温磁输运测量,包括对外部扰动的灵敏度和改进的互-该奖项反映了NSF的法定使命,并已被认为是值得通过使用评估的支持,基金会的学术价值和更广泛的影响审查标准。
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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Aharon Kapitulnik其他文献
ワイル電子系における軌道由来の負の磁気抵抗とプレーナーホール 効果
外尔电子系统中轨道衍生的负磁阻和平面霍尔效应
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
伏屋雄紀,勝野弘康,Kamran Behnia;Aharon Kapitulnik;浅香雄哉,菊池樹,伏屋雄紀;河村省吾,伏屋雄紀;竹端寛治,今中康貴,山田暉馨 , 伏屋雄紀 ,木下雄斗 ,徳永将史;山田暉馨,伏屋雄紀 - 通讯作者:
山田暉馨,伏屋雄紀
Proposed thermodynamic method to determine the vortex mass in layered superconductors
- DOI:
10.1007/bf00751505 - 发表时间:
1995-08-01 - 期刊:
- 影响因子:1.400
- 作者:
Kathryn A. Moler;Alexander L. Fetter;Aharon Kapitulnik - 通讯作者:
Aharon Kapitulnik
ナノスケールのチューリング・パターン:単層ビスマスの形態形成
纳米级图灵图案:单层铋的形态发生
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
伏屋雄紀,勝野弘康,Kamran Behnia;Aharon Kapitulnik - 通讯作者:
Aharon Kapitulnik
BiSb 系におけるトポロジカルヘテロ構造の表面状態
BiSb体系拓扑异质结构的表面态
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
伏屋雄紀,勝野弘康,Kamran Behnia;Aharon Kapitulnik;浅香雄哉,菊池樹,伏屋雄紀 - 通讯作者:
浅香雄哉,菊池樹,伏屋雄紀
量子極限におけるディラック電子の磁化
狄拉克电子在量子极限下的磁化
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
伏屋雄紀,勝野弘康,Kamran Behnia;Aharon Kapitulnik;浅香雄哉,菊池樹,伏屋雄紀;河村省吾,伏屋雄紀 - 通讯作者:
河村省吾,伏屋雄紀
Aharon Kapitulnik的其他文献
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{{ truncateString('Aharon Kapitulnik', 18)}}的其他基金
Collaborative Research: Axion Resonant InterAction Detection Experiment (ARIADNE) - a Renewal Proposal
合作研究:轴子共振相互作用检测实验(ARIADNE)——更新提案
- 批准号:
2110944 - 财政年份:2021
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Superconductor-(Metal)-Insulator Transitions: Understanding the Emergence of Anomalous Metallic States
超导体-(金属)-绝缘体转变:了解反常金属态的出现
- 批准号:
1808385 - 财政年份:2018
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Collaborative Research: Axion Resonant InterAction DetectioN Experiment (ARIADNE) - a Continuation Proposal
合作研究:轴子共振相互作用检测实验(ARIADNE)——一项延续提案
- 批准号:
1806395 - 财政年份:2018
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Collaborative Research: Axion Resonant InterAction DetectioN Experiment (ARIADNE)
合作研究:轴子共振相互作用检测实验(ARIADNE)
- 批准号:
1510484 - 财政年份:2016
- 资助金额:
$ 72.76万 - 项目类别:
Standard Grant
Search for Deviations from Newtonian Gravity at Micron Scale (A Continuation Proposal)
寻找微米尺度上牛顿引力的偏差(延续提案)
- 批准号:
1205236 - 财政年份:2012
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Exploring Quantum Effects in Two-Dimensional Multilayered Superconductors
探索二维多层超导体中的量子效应
- 批准号:
1104547 - 财政年份:2011
- 资助金额:
$ 72.76万 - 项目类别:
Standard Grant
Search for Deviations from Newtonian Gravity at Micron Scale (a continuation proposal)
寻找微米尺度牛顿引力的偏差(延续提案)
- 批准号:
0854678 - 财政年份:2009
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Superconductivity and Proximity Effect in Two-Dimensional Films and Multilayers
二维薄膜和多层膜中的超导性和邻近效应
- 批准号:
0803958 - 财政年份:2008
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Search for Gravity-Like Forces at Sub-100 microns Scale
寻找 100 微米以下尺度的类重力
- 批准号:
0554170 - 财政年份:2006
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
Superconductors, Insulators, Metals and Quantum Phase Transitions in Two-Dimensional Films
二维薄膜中的超导体、绝缘体、金属和量子相变
- 批准号:
0406339 - 财政年份:2004
- 资助金额:
$ 72.76万 - 项目类别:
Continuing Grant
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CAREER: Electrical and Thermoelectric Transport Beyond the Metal/Insulator Paradigm
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