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 Experiment Videos

Electron-phonon scattering in quantum point contacts.

Georg Seelig1, K A Matveev

  • 1Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland.

Physical Review Letters
|June 6, 2003
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Transforming the cytokine literature into a resource for experimental analysis and discovery.

bioRxiv : the preprint server for biology·2026
Same author

Dynamics of phage-host interactions in Bacteroides fragilis resolved by single-cell transcriptomics.

Nature communications·2026
Same author

A single-cell cytokine dictionary of human peripheral blood.

Research square·2026
Same author

A single-cell cytokine dictionary of human peripheral blood.

bioRxiv : the preprint server for biology·2025
Same author

Massively parallel assay of human splice variants reveals cis-regulatory drivers of disease-associated and cell type-specific splicing regulation.

bioRxiv : the preprint server for biology·2025
Same author

Programming human cell type-specific gene expression via an atlas of AI-designed enhancers.

bioRxiv : the preprint server for biology·2025
Same journal

Erratum: Spectroscopy and Ground-State Transfer of Ultracold Bosonic ^{39}K^{133}Cs Molecules [Phys. Rev. Lett. 135, 203401 (2025)].

Physical review letters·2026
Same journal

Erratum: Lifetime of the ^{2}F_{7/2} Level in Yb^{+} for Spontaneous Emission of Electric Octupole Radiation [Phys. Rev. Lett. 127, 213001 (2021)].

Physical review letters·2026
Same journal

Laser-Plasma Based Seeded Free Electron Laser in the High-Gain Regime.

Physical review letters·2026
Same journal

Parent Hamiltonians for Stabilizer Quantum Many-Body Scars.

Physical review letters·2026
Same journal

Properties of Heavy Cosmic Nuclei Phosphorus, Chlorine, Argon, Potassium, and Calcium: Results from the Alpha Magnetic Spectrometer.

Physical review letters·2026
Same journal

Role of Spin-Isospin Symmetries in Nuclear β-Decays.

Physical review letters·2026
See all related articles

We investigated electron backscattering in quantum point contacts caused by acoustic phonons. This study explains a negative correction to conductance and a zero-bias anomaly, aligning with experimental observations.

Area of Science:

  • Condensed matter physics
  • Mesoscopic physics
  • Quantum transport

Background:

  • Quantum point contacts (QPCs) exhibit complex conductance behavior.
  • The quantized conductance value of 2e^2/h is a fundamental property.
  • Experimental observations like the '0.7 feature' suggest underlying physics beyond simple models.

Purpose of the Study:

  • To investigate the negative correction to the quantized conductance of a QPC.
  • To understand the role of acoustic phonon backscattering in QPC conductance.
  • To explain the origin of the zero-bias anomaly observed in QPC conductance measurements.

Main Methods:

  • Theoretical study of electron transport in QPCs.
  • Modeling backscattering of electrons by acoustic phonons.

Related Experiment Videos

  • Analysis of temperature dependence and bias voltage effects on conductance.

    • Main Results:

    • A negative correction to the 2e^2/h conductance value was theoretically derived.
    • The correction exhibits activated temperature dependence.
    • A zero-bias anomaly in conductance is predicted, linked to phonon backscattering.

    Conclusions:

    • Acoustic phonon backscattering provides a mechanism for the negative conductance correction in QPCs.
    • The model qualitatively explains the observed activated temperature dependence and zero-bias anomaly.
    • The findings offer insights into the complex phenomena, including the 0.7 feature, in QPC conductance.