Novel phenomena in Coulomb coupled Luttinger liquids

NSF Award Search · 01002526DB NSF RESEARCH & RELATED ACTIVIT · $459,734 · view on nsf.gov ↗

Abstract

Non-technical Abstract: Current flowing in a wire can induce electron movement in the adjacent wire. The naive expectation is that the electron motion will mirror the direction of the current. However, recent findings in quantum wires have revealed that these systems can sometimes behave like a diode, allowing electrons in the nearby wire to move in only one direction, regardless of the current's direction. By studying this effect in detail, the research team aims to deepen our fundamental understanding of electron-electron interactions in one-dimensional systems. This knowledge could pave the way for the development of heat-harvesting devices and the discovery of novel quantum phases of matter. Additionally, the project offers valuable opportunities for educating and training undergraduate and graduate students in quantum devices, nanodevice fabrication, and cryogenic operations. It also promotes careers in quantum science and technology at the University of Florida. TECHNICAL SUMMARY: The project aims to investigate interactions between quasi-one-dimensional quantum wires coupled at the nanoscale using Coulomb drag measurements. While electron-electron interactions in individual Tomonaga-Luttinger liquids are well understood, the physics of Coulomb-coupled Tomonaga-Luttinger liquids remains less established. This project seeks to map the phase space of various drag-inducing mechanisms by examining the dependence of one-dimensional Coulomb drag on magnetic field, interw

Key facts

NSF award ID
2518016
Awardee
University of Florida (FL)
SAM.gov UEI
NNFQH1JAPEP3
PI
Dominique Laroche
Primary program
01002526DB NSF RESEARCH & RELATED ACTIVIT
All programs
QUANTUM INFORMATION SCIENCE, NANO NON-SOLIC SCI & ENG AWD
Estimated total
$459,734
Funds obligated
$459,734
Transaction type
Standard Grant
Period
09/01/2025 → 08/31/2028