Related Experiment Video
Updated: Jun 27, 2025

08:32
Indirect Fabrication of Lattice Metals with Thin Sections Using Centrifugal Casting
Published on: May 14, 2016
12.5K
Spin caloritronics in metallic superlattices
T Seki1,2,3, K Uchida1,2, K Takanashi4,5
1Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan.
Summary
Spin caloritronics explores converting heat to electricity using spin currents. Enhancing the anomalous Nernst effect (ANE) via superlattices is key for efficient thermoelectric devices.
Area of Science:
- Spin caloritronics
- Condensed matter physics
- Materials science
Background:
- Spin caloritronics investigates the interplay between charge, spin, and heat currents.
- The anomalous Nernst effect (ANE) offers transverse thermoelectric conversion, distinct from conventional Seebeck effect.
- Improving conversion efficiency is crucial for practical applications.
Purpose of the Study:
- To review the field of spin caloritronics.
- To highlight the role of superlattices in enhancing thermoelectric conversion.
- To discuss advancements in materials for spin-caloritronic devices.
Main Methods:
- Survey of existing research in spin caloritronics.
- Focus on superlattice structures for thermoelectric applications.
- Analysis of Fe-, Ni-, and ordered alloy-based metallic superlattices.
Main Results:
- Superlattice structures demonstrate increased anomalous Nernst coefficient (SANE).
- Pioneering work in Fe-based metallic superlattices.
- Recent progress in Ni-based and ordered alloy-based superlattices.
Conclusions:
- Superlattices are a promising approach to enhance SANE for efficient thermoelectric conversion.
- Continued research in materials and device design is needed for practical spin-caloritronic applications.
Related Concept Videos
Theory of Metallic Conduction
1.3K
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,...
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,...
1.3K
Types Of Superconductors
974
A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
974
Ferromagnetism
2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
2.4K
Metallic Solids
18.4K
Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
18.4K
Superconductor
1.1K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
1.1K
Molecular and Ionic Solids
17.1K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
17.1K

