Related Experiment Video
Updated: Jan 30, 2026
08:20
Sample Preparation by 3D-Correlative Focused Ion Beam Milling for High-Resolution Cryo-Electron Tomography
Published on: October 25, 2021
4.0K
Doublon Formation by Ions Impacting a Strongly Correlated Finite Lattice System
Karsten Balzer1, Maximilian Rodriguez Rasmussen2, Niclas Schlünzen2
1Rechenzentrum, Christian-Albrechts-Universität zu Kiel, D-24098 Kiel, Germany.
Physical Review Letters
|January 13, 2019
Summary
Energetic ion impacts can create fermionic doublons, leading to unique electronic properties in strongly correlated systems. This novel method establishes a homogeneous doublon distribution in a nonequilibrium steady state.
Area of Science:
- Condensed Matter Physics
- Quantum Mechanics
- Materials Science
Background:
- Strongly correlated fermion systems exhibit collective properties.
- Doublons (pairs of fermions with opposite spins) in lattices offer unique electronic properties.
- Previous methods for controlling doublon formation have limitations.
Purpose of the Study:
- To introduce and verify a novel mechanism for creating fermionic doublons.
- To investigate the creation of doublons using energetic ion impacts.
- To explore the resulting electronic properties and distribution.
Main Methods:
- Exact diagonalization simulations.
- Nonequilibrium Green functions (NEGF) simulations.
- Modeling fermionic doublon creation via energetic ion impact.
Main Results:
- Successful creation of fermionic doublons through energetic ion impact.
- Formation of a nonequilibrium steady state with homogeneous doublon distribution.
- Demonstration of a novel control mechanism for doublon formation.
Conclusions:
- Energetic ion impact offers a new method for controlling doublon formation.
- This effect is significant for finite strongly correlated systems like graphene nanoribbons.
- The phenomenon is experimentally observable in fermionic atoms in optical lattices.
More Related Videos
Related Concept Videos
02:54Trends in Lattice Energy: Ion Size and Charge
26.7K
An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
26.7K
03:45Formation of Complex Ions
26.1K
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
26.1K
02:33Lattice Centering and Coordination Number
11.5K
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...
Types of Unit Cells
Imagine taking a large number of identical...
11.5K
01:12Bewley Lattice Diagram
1.5K
The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
1.5K
02:20Correlations
35.9K
Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
35.9K
01:27Correlation and Causation
42.5K
Statistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. An indirect relationship of the variables signifies a correlation, while a direct relationship shows causation. If it is determined that no connection exists between the variables, then the correlation is a coincidence.
Correlation versus Causation
If the dependent variable increases or decreases when the independent variable increases, there is a positive or negative...
Correlation versus Causation
If the dependent variable increases or decreases when the independent variable increases, there is a positive or negative...
42.5K