Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

The Hall Effect01:30

The Hall Effect

4.5K
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting material. From a historical perspective, this experiment was the first to demonstrate that the charge carriers in most metals are negative.
4.5K
Types of Semiconductors01:20

Types of Semiconductors

1.5K
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
1.5K
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

2.4K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
2.4K
Fermi Level01:18

Fermi Level

1.9K
The Fermi-Dirac function is represented by an S-shaped curve indicating the probability of an energy state being occupied by an electron at a given temperature. The Fermi level is the energy level at which there is a fifty percent chance of finding an electron, and it is positioned between the lower-energy valence band and the higher-energy conduction band.
At absolute zero temperature, electrons fill all energy states up to the Fermi level, leaving upper states empty. As the temperature rises,...
1.9K
Theory of Metallic Conduction01:17

Theory of Metallic Conduction

1.8K
The conduction of free electrons inside a conductor is best described by quantum mechanics. However, a classical model makes predictions close to the results of quantum mechanics. It is called the theory of metallic conduction.
In this theory, Newton's second law of motion is used to determine the acceleration of an electron in the presence of an applied electric field. Then, its velocity is expressed via this acceleration.
An electron moves through the crystal, containing positive ions,...
1.8K
Carrier Transport01:21

Carrier Transport

1.0K
The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
1.0K

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Parental exposure to variable saturation deficit shapes the survival and thermotolerance of Aedes aegypti eggs.

Journal of insect physiology·2026
Same author

Imaging the flat bands of magic-angle graphene reshaped by interactions.

Nature·2026
Same author

Revealing Electron-Electron Interactions in Graphene at Room Temperature with a Quantum Twisting Microscope.

Nano letters·2026
Same author

Drought tolerance of <i>Aedes aegypti</i> mosquito eggs is influenced by adaptation to local climate conditions and associations with humans.

bioRxiv : the preprint server for biology·2026
Same author

Optical control over topological Chern number in moiré materials.

Nature·2026
Same author

Observation of a superfluid-to-insulator transition of bilayer excitons.

Nature·2026
Same journal

Demonstration of a quantum C-NOT gate in a time-multiplexed fully reconfigurable photonic processor.

Nature communications·2026
Same journal

Nonlinear quantum light source with van der Waals ferroelectric NbOX<sub>2</sub> (X = Br, I).

Nature communications·2026
Same journal

Antagonistic histone H2A variants and autonomous heterochromatin formation shape epigenomic patterns in Arabidopsis.

Nature communications·2026
Same journal

The long tail of nitrate pollution in groundwater challenges governance of global water quality.

Nature communications·2026
Same journal

Select microbial metabolites promote tau aggregation in a murine tauopathy model.

Nature communications·2026
Same journal

Warming climate has lengthened global intense tropical cyclone seasons.

Nature communications·2026
関連記事をすべて見る

関連する実験動画

Updated: Feb 19, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.4K

整数量子ホール状態における半整数熱伝導度

Ujjal Roy1, Sourav Manna2, Souvik Chakraborty1

  • 1Department of Physics, Indian Institute of Science, Bangalore, India.

Nature communications
|February 17, 2026
PubMed
まとめ
この要約は機械生成です。

半整数の熱伝導性は,以前は異様な非アベルの状態と結び付けられていたが,標準的な量子ホールの状態からも生じる. この発見は,分数量子化トランスポートのより単純な説明を示唆し,トポロジカル量子コンピューティング研究に影響を与えます.

さらに関連する動画

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

11.4K
The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
09:10

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

898

関連する実験動画

Last Updated: Feb 19, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

10.4K
Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
10:36

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

Published on: January 21, 2016

11.4K
The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
09:10

The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements

Published on: December 5, 2025

898

科学分野:

  • 凝縮物質物理学 凝縮物質物理学
  • 量子材料は,量子的な物質である.
  • トポロジカル・量子コンピューティング

背景:

  • 半整数の熱伝導性は,非アベルの状態の特徴として広く考えられている.
  • これらの状態は,トポロジカル量子コンピューティングにとって極めて重要なMajoranaエッジモードと関連しています.
  • 現存する理論では,分数的な熱伝導率の値と,些細なトポロジカルな性質を結びつけている.

研究 の 目的:

  • 半整数の熱伝導性の代替的起源を調査する.
  • 非アベルの状態のみを意味するという支配的な概念に異議を唱えるために.
  • 量子化された輸送現象における均衡ダイナミクスの役割を調査する.

主な方法:

  • 双層グラフェンを用いた理論的モデリングと実験的実現.
  • 明確な整数量子ホールエッジ (粒子や穴のような) を特徴とする閉じ込められた幾何学.
  • デバイスセグメント全体で完全な充電と熱均衡を確保します.

主要な成果:

  • 半整数の2端の熱伝導率高原の実現が実証されました.
  • 非アベルの状態ではなく,従来の整数量子ホールの状態を使用してこの高原を達成しました.
  • 均衡ダイナミクスから生じる堅固な整数以外の熱伝導率値を展示しました.

結論:

  • 堅固な非整数の熱伝導性は,平衡ダイナミクスから現れます.
  • これは,半整数の熱伝導率と非アベルのトポロジーの間の排他的なリンクに異議を唱える.
  • このアプローチは,分数トランスポートの研究のための他の量子ホールプラットフォームに一般化できます.