Skip to main content

Condensed Matter > Mesoscale and Nanoscale Physics

arXiv:1811.08777 (cond-mat)
[Submitted on 21 Nov 2018]

Title:High-frequency breakdown of the integer QHE in GaAs/AlGaAs heterojunctions

Authors:V. Dziom, A. Shuvaev, A. V. Shchepetilnikov, D. MacFarland, G. Strasser, A. Pimenov
View PDF HTML (experimental)
Abstract:The integer quantum Hall effect is a well-studied phenomenon at frequencies below about 100 Hz. The plateaus in high-frequency Hall conductivity were experimentally proven to retain up to 33 GHz, but the behavior at higher frequencies has remained largely unexplored. Using continuous wave THz spectroscopy, the complex Hall conductivity of GaAs/AlGaAs heterojunctions was studied in the range of 69-1100 GHz. Above 100 GHz, the quantum plateaus are strongly smeared out and replaced by weak quantum oscillations in the real part of the conductivity. The amplitude of the oscillations decreases with increasing frequency. Near 1 THz, the Hall conductivity does not reveal any features related to the filling of Landau levels. Similar oscillations are observed in the imaginary part as well, this effect has no analogy at zero frequency. This experimental picture is in disagreement with existing theoretical considerations of the high-frequency quantum Hall effect.
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Cite as: arXiv:1811.08777 [cond-mat.mes-hall]
  (or arXiv:1811.08777v1 [cond-mat.mes-hall] for this version)
  https://doi.org/10.48550/arXiv.1811.08777
Journal reference: Phys. Rev. B 99, 045305 (2019)
Related DOI: https://doi.org/10.1103/PhysRevB.99.045305

Submission history

From: Uladzislau Dziom [view email]
[v1] Wed, 21 Nov 2018 15:16:26 UTC (1,688 KB)
Full-text links:

Access Paper:

view license

Current browse context:

cond-mat.mes-hall
< prev   |   next >
new | recent | 2018-11
Change to browse by:
cond-mat

References & Citations

Bookmark

BibSonomy Reddit

Bibliographic and Citation Tools

Bibliographic Explorer (What is the Explorer?)
Connected Papers (What is Connected Papers?)
Litmaps (What is Litmaps?)
scite Smart Citations (What are Smart Citations?)

Code, Data and Media Associated with this Article

alphaXiv (What is alphaXiv?)
CatalyzeX Code Finder for Papers (What is CatalyzeX?)
DagsHub (What is DagsHub?)
Gotit.pub (What is GotitPub?)
Hugging Face (What is Huggingface?)
ScienceCast (What is ScienceCast?)

Demos

Replicate (What is Replicate?)
Hugging Face Spaces (What is Spaces?)
TXYZ.AI (What is TXYZ.AI?)

Recommenders and Search Tools

Influence Flower (What are Influence Flowers?)
CORE Recommender (What is CORE?)
IArxiv Recommender (What is IArxiv?)

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.

Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)