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IR Absorption Frequency: Hybridization

IR Absorption Frequency: Hybridization

Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...

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Related Experiment Video

Updated: Jun 22, 2025

Writing and Low-Temperature Characterization of Oxide Nanostructures

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

Emergent quantum phenomena in atomically engineered iridate heterostructures.

Lin Hao¹, Di Yi², Meng Wang³

¹Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei, Anhui 230031, China.

Fundamental Research

|June 27, 2024

Summary

This summary is machine-generated.

Artificial iridate structures offer tunable properties for novel physics. This review highlights recent advancements in SrIrO3/SrTiO3 superlattices and magnetic heterostructures, exploring their potential for future applications.

Keywords:

Artificial crystalline structure Ionic liquid gating Iridate Magnetism Magnetotransport property Many-body physics Spin-orbit coupling

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Area of Science:

Condensed Matter Physics
Materials Science
Solid-State Chemistry

Background:

Iridates exhibit emergent phenomena and unique physical properties.
Artificial iridate structures provide flexibility in tuning material characteristics.
These structures are key to exploring novel functionalities.

Purpose of the Study:

To provide an overview of recent progress in iridate-based artificial structures.
To introduce essential concepts related to iridates.
To discuss findings on SrIrO3/SrTiO3 superlattices and magnetic heterostructures.

Main Methods:

Review of recent research on iridate-based artificial structures.
Introduction to fundamental concepts in iridates.
Illustration of findings on SrIrO3/SrTiO3 superlattices and magnetic heterostructures.

Main Results:

Significant progress in understanding emergent phenomena in iridates.
Demonstration of tunable properties in SrIrO3/SrTiO3 superlattices.
Exploration of heterostructures with magnetic oxides and their electric-field response.

Conclusions:

Iridate-based artificial structures are a promising platform for discovering new physics.
Further research is needed to address existing challenges and explore future directions.