Related Experiment Video
Updated: Jan 26, 2026
12:19
Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
8.8K
Quantum interference of Josephson current in topological Anderson insulator junctions
1Department of Applied Physics, Donghua University, 2999 North Renmin Road, Shanghai 201620, People's Republic of China.
Summary
We studied supercurrent in topological Anderson insulators (TAIs) using Green's function methods. Disorder-induced edge states show unique transport, with critical supercurrent peaking near the TAI phase boundary.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Quantum Phenomena
Background:
- Topological Anderson insulators (TAIs) exhibit unique edge states.
- Understanding supercurrent transport in these materials is crucial for quantum technologies.
Purpose of the Study:
- Investigate the critical supercurrent in Josephson junctions made of TAIs.
- Analyze the impact of disorder on supercurrent transport and edge states.
Main Methods:
- Employed the Matsubara Green's function formalism.
- Conducted numerical simulations to analyze transport properties.
Main Results:
- Disorder-induced edge states in TAIs show distinct normal and supercurrent transport.
- Critical supercurrent exhibits a peak at the weak-disorder boundary, not a plateau.
- Supercurrent oscillations persist in the TAI phase despite increasing disorder.
Conclusions:
- The critical supercurrent's behavior provides insights into disorder effects in TAIs.
- Supercurrent quantum interference can detect disorder-induced edge states in TAIs.
Related Concept Videos
02:43Quantum Numbers
49.5K
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.
49.5K
01:16The Anderson-Darling Test
1.1K
The Anderson-Darling test is a statistical method used to determine whether a data sample is likely drawn from a specific theoretical distribution. Unlike parametric tests, it does not require assumptions about specific parameters of the distribution. Instead, it compares the sample's empirical cumulative distribution function (ECDF) with the cumulative distribution function (CDF) of the hypothesized distribution. Critical values for the test are specific to the chosen distribution rather...
1.1K
01:23Insulation Coordination
559
Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times...
559
01:19Conductors and Insulators
10.6K
Some materials may easily let electrical charges pass through them, while others obstruct their flow. The former are called conductors and the latter insulators. The atomic structures of materials determine whether they are conductors or insulators of electricity.
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
Most metals are conductors. Their atomic configuration is such that one or more electron(s) are loosely bound to the nucleus in each atom. Thus, a sea of mobile electrons are available in them, known as free electrons. Their easy...
10.6K
02:18Interference and Diffraction
52.0K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
52.0K
02:45The Quantum-Mechanical Model of an Atom
56.8K
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.
56.8K