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

Ionic Crystal Structures02:42

Ionic Crystal Structures

14.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.7K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

54.2K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
54.2K
Metallic Solids02:37

Metallic Solids

18.7K
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....
18.7K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

44.4K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
44.4K
Valence Bond Theory02:42

Valence Bond Theory

9.4K
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...
9.4K
Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

9.9K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
9.9K

You might also read

Related Articles

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

Sort by
Same author

Direct Observation of Vortex Liquid Droplets in the Iron Pnictide Superconductor CaKFe<sub>4</sub>As<sub>4</sub> at 0.5T<sub>c</sub>.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

Tuning the electronic properties of MgB<sub>2</sub>by substitution with Mn and C.

Journal of physics. Condensed matter : an Institute of Physics journal·2025
Same author

Semi-classical origin of the extreme magnetoresistance in PtSn<sub>4</sub>.

Nature communications·2024
Same author

Measurements of nematic susceptibility with phase sensitive nuclear magnetic resonance in pulsed strain fields.

The Review of scientific instruments·2024
Same author

Strong enhancement of magnetic ordering temperature and structural/valence transitions in EuPd<sub>3</sub>S<sub>4</sub> under high pressure.

Proceedings of the National Academy of Sciences of the United States of America·2023
Same author

Antiferromagnetic order and its interplay with superconductivity in CaK(Fe1-xMn<sub></sub>)<sub>4</sub>As<sub>4</sub>.

Journal of physics. Condensed matter : an Institute of Physics journal·2023

Related Experiment Video

Updated: Sep 10, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.6K

Quasiperiodic potassium adlayer on decagonal Al-Ni-Co quasicrystal.

Vipin Kumar Singh1, Marian Krajci2, Pramod Bhakuni1

  • 1UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore 452001, Madhya Pradesh, India.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|August 21, 2025
PubMed
Summary

Researchers observed quasiperiodic potassium monolayers forming on a decagonal aluminum-nickel-cobalt quasicrystal surface. This quasiperiodic growth is driven by the substrate

Keywords:
alkali metaldecagonal quasicrystaldensity functional theoryquasiperiodic adlayerscanning tunneling microscopy

More Related Videos

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

14.6K
Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

14.4K

Related Experiment Videos

Last Updated: Sep 10, 2025

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.6K
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

14.6K
Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

14.4K

Area of Science:

  • Materials Science
  • Surface Science
  • Condensed Matter Physics

Background:

  • Quasiperiodicity is a key characteristic of quasicrystals, materials with long-range order but lacking translational symmetry.
  • Understanding adatom behavior on quasicrystal surfaces is crucial for exploring their unique electronic and physical properties.

Purpose of the Study:

  • To investigate the formation and structure of potassium (K) monolayers on the tenfold surface of decagonal aluminum-nickel-cobalt (Al-Ni-Co) quasicrystals.
  • To elucidate the role of substrate-adsorbate interactions in driving quasiperiodic growth patterns.

Main Methods:

  • Scanning Tunneling Microscopy (STM) for atomic-scale surface imaging.
  • Low Energy Electron Diffraction (LEED) for structural analysis and symmetry determination.
  • Density Functional Theory (DFT) calculations to model adsorbate-substrate interactions and predict growth structures.

Main Results:

  • Demonstrated the formation of a quasiperiodic potassium monolayer on the decagonal Al-Ni-Co surface.
  • Observed dispersed K adatoms at low coverage, coalescing into pentagonal and decagonal motifs at higher coverages.
  • LEED patterns confirmed decagonal symmetry, and STM results closely matched DFT predictions of K adatoms binding to favorable quasiperiodic sites.

Conclusions:

  • Potassium adatoms form quasiperiodic monolayers on decagonal Al-Ni-Co quasicrystals, driven by adsorbate-substrate interactions.
  • The electronic structure of the quasicrystal substrate dictates the quasiperiodic growth of the potassium adlayer.
  • Experimental findings are in strong agreement with theoretical predictions, validating the DFT model.