Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
Ferromagnetism01:31

Ferromagnetism

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...
Valence Bond Theory02:42

Valence Bond Theory

Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
Fermi Level01:18

Fermi Level

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,...
Metal-Semiconductor Junctions01:24

Metal-Semiconductor Junctions

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The semiconductor's...
Fermi Level Dynamics01:12

Fermi Level Dynamics

The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[New progress in diagnosis and treatment of hypertrophic cardiomyopathy with left ventricular apical aneurysm].

Zhonghua xin xue guan bing za zhi·2026
Same author

Pelargonidin Inhibits Isoproterenol Induced Myocardial Fibrosis via Regulating Transforming Growth Factor-beta/Smad2/3 Signaling and Th2 Cytokines in Mice.

Physiological research·2026
Same author

Electronic localization on the structural inhomogeneities formed due to Bi and Te deficiency in the MBE grown films of AF topological insulator MnBi2Te4: Evidence from spectroscopic ellipsometry and infrared studies.

The Journal of chemical physics·2025
Same author

[The influence of preoperative CT image characteristics on the outcome of thoracoscopic surgery for chronic tuberculous empyema].

Zhonghua wai ke za zhi [Chinese journal of surgery]·2025
Same author

[Annual progress of new drugs and new regimens for anti-tuberculosis treatment (2024)].

Zhonghua jie he he hu xi za zhi = Zhonghua jiehe he huxi zazhi = Chinese journal of tuberculosis and respiratory diseases·2025
Same author

MRI-based radiomics virtual biopsy for BCL6 in primary central nervous system lymphoma.

Clinical radiology·2024

Related Experiment Video

Updated: May 18, 2026

Epitaxial Growth of Perovskite Strontium Titanate on Germanium via Atomic Layer Deposition
09:45

Epitaxial Growth of Perovskite Strontium Titanate on Germanium via Atomic Layer Deposition

Published on: July 26, 2016

d0 ferromagnetic interface between nonmagnetic perovskites.

R Oja1, M Tyunina, L Yao

  • 1COMP Centre of Excellence, Department of Applied Physics, Aalto University, Helsinki, Finland.

Physical Review Letters
|September 26, 2012
PubMed
Summary

Charge imbalance at perovskite interfaces induces d(0) ferromagnetism, creating a 2D hole gas. This phenomenon is observed at room temperature in various interfaces, driven by oxygen orbitals.

More Related Videos

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

Related Experiment Videos

Last Updated: May 18, 2026

Epitaxial Growth of Perovskite Strontium Titanate on Germanium via Atomic Layer Deposition
09:45

Epitaxial Growth of Perovskite Strontium Titanate on Germanium via Atomic Layer Deposition

Published on: July 26, 2016

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy
10:40

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance
11:38

Influence of Hybrid Perovskite Fabrication Methods on Film Formation, Electronic Structure, and Solar Cell Performance

Published on: February 27, 2017

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Solid State Chemistry

Background:

  • Perovskite materials exhibit diverse electronic and magnetic properties.
  • Interface engineering is crucial for tuning material functionalities.
  • Understanding d(0) ferromagnetism in oxide heterostructures is an active research area.

Purpose of the Study:

  • To investigate d(0) ferromagnetism at charge-imbalanced interfaces between perovskites.
  • To explore the role of charge imbalance versus vacancy doping in inducing ferromagnetism.
  • To determine the general applicability of this phenomenon across different perovskite systems.

Main Methods:

  • Computational studies using superlattice calculations.
  • Experimental synthesis of atomically sharp epitaxial interfaces.
  • Magnetic characterization, including ferromagnetic hysteresis measurements.

Main Results:

  • Charge imbalance at SrTiO(3)/KTaO(3) interfaces induces a d(0) ferromagnetic 2D hole gas at oxygen 2p orbitals.
  • This effect overrides doping by vacancies at realistic concentrations.
  • Room-temperature ferromagnetism observed in SrTiO(3)/KTaO(3), SrTiO(3)/KNbO(3), and SrTiO(3)/NaNbO(3) interfaces.

Conclusions:

  • Ferromagnetism is a general property of hole-type d(0) perovskite interfaces.
  • The observed ferromagnetism is attributed to the high density of states and exchange coupling at the oxygen t(1g) band.
  • Interface engineering provides a pathway to achieve room-temperature d(0) ferromagnetism in oxide heterostructures.