Flashcards on Fractional Quantum Hall Effect

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What is the Fractional Quantum Hall Effect?

A phenomenon of electrical resistance observed in two-dimensional electron systems at low temperatures and strong magnetic fields.

What are the main characteristics of the Fractional Quantum Hall Effect?

Fractional values of the Hall resistance, quasiparticles with fractional electric charge, and an energy gap in the density of states.

Who discovered the Fractional Quantum Hall Effect?

Daniel C. Tsui, Horst L. Störmer, and Robert B. Laughlin.

What is the significance of the Fractional Quantum Hall Effect?

It provides insights into the behavior of strongly correlated electronic systems and has implications for the field of condensed matter physics.

How does the Fractional Quantum Hall Effect occur?

It arises from the strong interactions between electrons in a two-dimensional system and the magnetic field.

What is the relationship between the Integer Quantum Hall Effect and the Fractional Quantum Hall Effect?

The Fractional Quantum Hall Effect is a generalization of the Integer Quantum Hall Effect.

What are Laughlin states?

Special quantum states that describe fractional filling fractions in the Fractional Quantum Hall Effect.

What are anyons?

Quasiparticles with fractional statistics predicted to exist in the Fractional Quantum Hall Effect.

What are the applications of the Fractional Quantum Hall Effect?

It has potential applications in quantum computing and topological quantum computing.

What are the fractional charge values observed in the Fractional Quantum Hall Effect?

The fractional charge values are e/3, e/5, e/7, etc., where e is the elementary charge.

What are the conditions necessary for observing the Fractional Quantum Hall Effect?

Low temperatures, strong magnetic fields, and high-quality two-dimensional electron systems are required to observe the effect.

What are the edge states in the Fractional Quantum Hall Effect?

One-dimensional states that propagate along the edges of a two-dimensional sample, carrying fractional charges.

What are the topological properties of the Fractional Quantum Hall Effect?

The Fractional Quantum Hall Effect exhibits topological order and fractional quantum numbers.

What are some experimental techniques used to study the Fractional Quantum Hall Effect?

Transport measurements, tunneling spectroscopy, and scanning probe microscopy.

What are some theoretical models used to explain the Fractional Quantum Hall Effect?

Composite fermion model, hierarchical model, and anyon model.

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Test Your Knowledge


Who discovered the Fractional Quantum Hall Effect?



What do the Laughlin states describe?



What are anyons?



What are the applications of the Fractional Quantum Hall Effect?



What are the conditions necessary for observing the Fractional Quantum Hall Effect?



What are the energy levels observed in the Fractional Quantum Hall Effect?



What is the relationship between the Integer Quantum Hall Effect and the Fractional Quantum Hall Effect?



What are the edge states in the Fractional Quantum Hall Effect?



What are fractional charge values observed in the Fractional Quantum Hall Effect?



What are some theoretical models used to explain the Fractional Quantum Hall Effect?




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