高温超伝導体の物理学の進歩
1Department of Physics, University of California, Berkeley, CA 94720, USA, and Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. Department of Physics and Astronomy, Rutgers University, Piscataway, NJ.
Science (New York, N.Y.)
|April 25, 2000
まとめ
高温銅酸化物超伝導体は,従来の物理学を超えた驚くべき性質を示し,新しい研究を推進しています. これらの材料は,金属における電子相互作用に関する我々の理解に挑戦しています.
科学分野:
- 凝縮物質物理学 凝縮物質物理学
- マテリアルサイエンス 材料科学
背景:
- 高温銅酸化物超伝導体は,重要な科学的関心を持っています.
- これらの材料は,以前は不可能と考えられていた超伝導的移行温度を示します.
- それらは,従来の金属物理学に逆らう性質を持っています.
研究 の 目的:
- 高温銅酸化物超伝導体における最近の進歩の視点を提供するため.
- これらの発展が金属における電子相互作用を理解するための意味について議論する.
主な方法:
- 最近の実験技術のレビュー.
- 相互作用する電子に関連する理論的概念の分析.
主要な成果:
- 高温超伝導体は,材料科学の可能性を広げています.
- これらの材料によって,新しい実験的,理論的アプローチが求められます.
結論:
- 高温銅酸化物超伝導体の研究は,基礎物理学の理解を深める上で極めて重要です.
- これらの材料は,金属における電子の行動に関する既存の理論の再評価を必要とします.
関連する概念動画
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Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
01:20Mechanisms of Heat Transfer II
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01:24Superconductor
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01:28Types Of Superconductors
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01:21Joule-Thomson Effect
The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases.
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This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
01:14Mechanisms of Heat Transfer
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.