• HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
Monday, August 4, 2025
BIOENGINEER.ORG
No Result
View All Result
  • Login
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
  • HOME
  • NEWS
  • EXPLORE
    • CAREER
      • Companies
      • Jobs
        • Lecturer
        • PhD Studentship
        • Postdoc
        • Research Assistant
    • EVENTS
    • iGEM
      • News
      • Team
    • PHOTOS
    • VIDEO
    • WIKI
  • BLOG
  • COMMUNITY
    • FACEBOOK
    • INSTAGRAM
    • TWITTER
No Result
View All Result
Bioengineer.org
No Result
View All Result
Home NEWS Science News Chemistry

Pitt researchers create nanoscale slalom course for electrons

Bioengineer by Bioengineer
November 25, 2020
in Chemistry
Reading Time: 3 mins read
0
Share on FacebookShare on TwitterShare on LinkedinShare on RedditShare on Telegram

Professors from the Department of Physics and Astronomy have created a serpentine path for electrons

IMAGE

Credit: Jeremy Levy

PITTSBURGH–A research team led by professors from the Department of Physics and Astronomy have created a serpentine path for electrons, imbuing them with new properties that could be useful in future quantum devices.

Jeremy Levy, a distinguished professor of condensed matter physics, and Patrick Irvin, research professor, are coauthors of the paper “Engineered spin-orbit interactions in LaAlO3/SrTiO3-based 1D serpentine electron waveguides,” published in Science Advances on November 25.

“We already know how to shoot electrons ballistically through one-dimensional nanowires made from these oxide materials,” explains Levy. “What is different here is that we have changed the environment for the electrons, forcing them to weave left and right as they travel. This motion changes the properties of the electrons, giving rise to new behavior.”

The work is led by a recent PhD recipient, Dr. Megan Briggeman, whose thesis was devoted to the development of a platform for “quantum simulation” in one dimension. Briggeman is also the lead author on a related work published earlier this year in Science, where a new family of electronic phases was discovered in which electrons travel in packets of 2, 3, and more at a time.

Electrons behave very differently when forced to exist along a straight line (i.e., in one dimension). It is known, for example, that the spin and charge components of electrons can split apart and travel at different speeds through a 1D wire. These bizarre effects are fascinating and also important for the development of advanced quantum technologies such as quantum computers. Motion along a straight line is just one of a multitude of possibilities that can be created using this quantum simulation approach. This publication explores the consequences of making electrons weave side to side while they are racing down and otherwise linear path.

One recent proposal for topologically-protected quantum computation takes advantage of so-called “Majorana fermions”, particles which can exist in 1D quantum wires when certain ingredients are present. The LaAlO3/SrTiO3 system, it turns out, has most but not all of the required interactions. Missing is a sufficiently strong “spin-orbit interaction” that can produce the conditions for Majorana fermions. One of the main findings of this latest work from Levy is that spin-orbit interactions can in fact be engineered through the serpentine motion that electrons are forced to undertake.

In addition to identifying new engineered spin-orbit couplings, the periodic repetition of the serpentine path creates new ways for electrons to interact with one another. The experimental result of this is the existence of fractional conductances that deviate from those expected for single electrons.

These slalom paths are created using a nanoscale sketching technique analogous to an Etch A Sketch toy, but with a point size that is a trillion times smaller in area. These paths can be sketched and erased over and over, each time creating a new type of path for electrons to traverse. This approach can be thought of as a way of creating quantum materials with re-programmable properties. Materials scientists synthesize materials in a similar fashion, drawing atoms from the periodic table and forcing them to arrange in periodic arrays. Here the lattice is artificial–one zig-zag of the motion takes place in a ten nanometer of space rather than a sub-nanometer atomic distance.

Levy, who is also director of the Pittsburgh Quantum Institute, stated that this work contributes to one of the main goals of the Second Quantum Revolution, which is to explore, understand, and exploit the full nature of quantum matter. An improved understanding, and the ability to simulate the behavior of a wide range of quantum materials, will have wide-ranging consequences. “This research falls within a larger effort here in Pittsburgh to develop new science and technologies related to the second quantum revolution,” he said.

###

In addition to Levy, Irvin, and Briggeman, Pitt research team members include Physics and Astronomy graduate students Jianan Li, and Mengchen Huang. Other team members include Hyungwoo Lee, now at Pusan National University in South Korea, and Jung-Woo Lee, Ki-Tae Eom, and Chang-Beom Eom, from the University of Wisconsin-Madison.

See the video, 11Levels: Serpentine Electron Waveguides, for more:
https://youtu.be/aqeNbWZvIzk

Media Contact
Deborah Todd
[email protected]

Tags: Atomic/Molecular/Particle PhysicsChemistry/Physics/Materials SciencesMaterialsMolecular PhysicsNuclear PhysicsParticle PhysicsResearch/Development
Share12Tweet8Share2ShareShareShare2

Related Posts

Catalytic C(sp2) Expansion of Alkylboranes

Catalytic C(sp2) Expansion of Alkylboranes

August 4, 2025
Metal–Sulfur Sites Boost MOF Hydrogenation Catalysis

Metal–Sulfur Sites Boost MOF Hydrogenation Catalysis

August 3, 2025

Bright Excitons Enable Optical Spin State Control

August 3, 2025

Flame Synthesis Creates Custom High-Entropy Metal Nanomaterials

August 2, 2025
Please login to join discussion

POPULAR NEWS

  • Blind to the Burn

    Overlooked Dangers: Debunking Common Myths About Skin Cancer Risk in the U.S.

    60 shares
    Share 24 Tweet 15
  • Neuropsychiatric Risks Linked to COVID-19 Revealed

    57 shares
    Share 23 Tweet 14
  • Predicting Colorectal Cancer Using Lifestyle Factors

    45 shares
    Share 18 Tweet 11
  • Dr. Miriam Merad Honored with French Knighthood for Groundbreaking Contributions to Science and Medicine

    46 shares
    Share 18 Tweet 12

About

We bring you the latest biotechnology news from best research centers and universities around the world. Check our website.

Follow us

Recent News

AI Models Reveal Microplastics in Neuse River Basin

Gratitude vs. Behavioral Activation in Breast Cancer

Nitric Oxide Drives Metabolic Shift in Macrophages

  • Contact Us

Bioengineer.org © Copyright 2023 All Rights Reserved.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In
No Result
View All Result
  • Homepages
    • Home Page 1
    • Home Page 2
  • News
  • National
  • Business
  • Health
  • Lifestyle
  • Science

Bioengineer.org © Copyright 2023 All Rights Reserved.