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

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.5K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.5K
Isomerism in Alkenes02:01

Isomerism in Alkenes

14.5K
Alkenes like 1-butene and 2-butene exhibit constitutional isomerism, as they differ in the position of the double bond. Further, 2-butene exhibits stereoisomerism and exists as two distinct compounds differing in spatial arrangement.
An isomer is called cis-2-butene when the methyl groups are on the same side of the double bond, and the other stereoisomer, in which methyl groups are on the opposite side of the double bond, is called trans-2-butene. The cis and trans stereoisomers are not...
14.5K
Stability of Conjugated Dienes01:28

Stability of Conjugated Dienes

4.0K
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
4.0K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.5K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
2.5K
π Molecular Orbitals of 1,3-Butadiene01:24

π Molecular Orbitals of 1,3-Butadiene

11.1K
Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
11.1K
Diels–Alder Reaction Forming Cyclic Products: Stereochemistry01:28

Diels–Alder Reaction Forming Cyclic Products: Stereochemistry

4.6K
The Diels–Alder reaction is one of the robust methods for synthesizing unsaturated six-membered rings. The reaction involves a concerted cyclic movement of six π electrons: four π electrons from the diene and two π electrons from the dienophile.
4.6K

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

Reentrant superconductivity at an oxide heterointerface.

Science advances·2026
Same author

Saturated and Anisotropic Magnetostriction in an Altermagnet.

Journal of the American Chemical Society·2026
Same author

Reversible Tuning of Magnetic Order and Intrinsic Superconductivity in Strained FeTe Films via Stoichiometry Control.

ACS nano·2026
Same author

Occupation Dynamics of Floquet-Volkov States and Spectral Sum Rule.

Nano letters·2026
Same author

Robust Topological Surface States and Enhanced Superconductivity in Self-Intercalated PdTe<sub>2</sub>.

Nano letters·2026
Same author

Spectroscopic evidence for a first-order transition to a possible orbital Fulde-Ferrell-Larkin-Ovchinnikov state.

Nature communications·2026

関連する実験動画

Updated: Dec 26, 2025

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.9K

タイプII 断層スタネルのペアリング

Joseph Falson1, Yong Xu2,3,4, Menghan Liao2

  • 1Max Planck Institute for Solid State Research, Stuttgart 70569, Germany.

Science (New York, N.Y.)
|March 14, 2020
PubMed
まとめ

数層のスタネンは,スピン軌道ロックによって駆動される二次元超伝導体でユニークなイージングペアリングメカニズムを示します. この発見は 超低温で 強化された 機内の重要な磁場を示しています

さらに関連する動画

Real-time Observation of the DNA Strand Exchange Reaction Mediated by Rad51
06:24

Real-time Observation of the DNA Strand Exchange Reaction Mediated by Rad51

Published on: February 13, 2019

8.4K
Preparation and Characterization of C60/Graphene Hybrid Nanostructures
08:40

Preparation and Characterization of C60/Graphene Hybrid Nanostructures

Published on: May 15, 2018

9.9K

関連する実験動画

Last Updated: Dec 26, 2025

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.9K
Real-time Observation of the DNA Strand Exchange Reaction Mediated by Rad51
06:24

Real-time Observation of the DNA Strand Exchange Reaction Mediated by Rad51

Published on: February 13, 2019

8.4K
Preparation and Characterization of C60/Graphene Hybrid Nanostructures
08:40

Preparation and Characterization of C60/Graphene Hybrid Nanostructures

Published on: May 15, 2018

9.9K

科学分野:

  • 凝縮物質物理学
  • 材料科学
  • 量子材料について

背景:

  • スピン-軌道結合は2D超伝導体におけるトポロジカル材料とイージングペアリングに不可欠です.
  • イージングペアリングは通常,反転対称性を破る必要があり,大きな平面内磁場をサポートします.
  • 数層のスタネン (表面張りの灰色のタン) は,最近発見された超伝導体である.

研究 の 目的:

  • 数層のスタネルのペアリングメカニズムを調査する.
  • スタネンがイージングペアリングと その背後にあるメカニズムを示すかどうかを判断する.
  • 磁界の温度依存性を調べるためだ

主な方法:

  • 電子帯域構造の理論的分析
  • 超低温で平面内の重要な磁場を実験的に測定する.

主要な成果:

  • 数層のスタネンは,異なる軌道指数を持つバンドを含む明確なイージングペアリングメカニズムを示している.
  • このペアリングは,反転対称性破裂とは無関係なスピン軌道ロックにより発生します.
  • 理論的な予測と一致する,超低温で重要な強化を示しています.

結論:

  • スタネンはイッシングの超伝導性を研究するための新しいプラットフォームです.
  • 観測されたペアリングメカニズムは,高クリティカルフィールドを持つ超伝導体の設計のための新しい道を提供します.
  • この発見は,新しい2D材料におけるスピン・オービタ・カップリング効果の理解を進める.