Related Experiment Video
Updated: Jan 31, 2026
07:56
A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
9.0K
Multiple Chiral Majorana Fermion Modes and Quantum Transport
1State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China.
Physical Review Letters
|January 5, 2019
Summary
We propose a new platform for realizing multiple chiral Majorana fermions in a 2D topological superconductor. Experiments can detect these exotic particles via unique electrical conductance signatures.
Area of Science:
- Condensed Matter Physics
- Topological Materials Science
Background:
- Chiral Majorana fermions are massless, self-conjugate particles.
- They can emerge as edge states in 2D topological states of matter.
Purpose of the Study:
- Propose a novel platform for creating 2D chiral topological superconductors (TSCs).
- Realize multiple chiral Majorana fermions using a quantized anomalous Hall insulator and an s-wave superconductor.
Main Methods:
- Coupling a magnetic topological insulator with a non-trivial band topology to an ion-based superconductor (e.g., FeTe0.55Se0.45).
- Proposing electrical and thermal transport experiments to detect Majorana fermions.
Main Results:
- A N=3 chiral TSC is realized with three chiral Majorana fermions.
- A unique quantized electrical conductance signature of (2/3)e^2/h is predicted for a quantized anomalous Hall-TSC junction.
Conclusions:
- The proposed system offers an ideal platform for studying chiral Majorana fermion physics.
- The predicted conductance signature can distinguish Majorana fermions from trivial explanations.
Related Concept Videos
02:25Molecules with Multiple Chiral Centers
15.0K
Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...
15.0K
02:43Quantum Numbers
50.0K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
50.0K
02:25Chirality
29.5K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
29.5K
02:45The Quantum-Mechanical Model of an Atom
57.3K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
57.3K
02:30Chirality in Nature
17.2K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
17.2K
01:07What is a Mode?
26.0K
The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
26.0K