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Nonreciprocal Coulomb drag between quantum wires in the quasi-one-dimensional regime

Journal Article · · Physical Review. B
 [1];  [1];  [1];  [1];  [1];  [2];  [3]
  1. University of Florida, Gainesville, FL (United States)
  2. University of Wisconsin, Madison, WI (United States)
  3. Sandia National Laboratory (SNL-NM), Albuquerque, NM (United States). Center for Integrated Nanotechnologies

Coulomb drag experiments have been an essential tool to study strongly interacting low-dimensional systems. Historically, this effect has been explained in terms of momentum transfer between electrons in the active and the passive layer. We report Coulomb drag measurements between laterally coupled GaAs/AlGaAs quantum wires in the multiple one-dimensional (1D) sub-band regime that break Onsager's reciprocity upon both layer and current direction reversal, in contrast to prior 1D Coulomb drag results. The drag signal shows nonlinear current-voltage (I-V) characteristics, which are well characterized by a third-order polynomial fit. These findings are qualitatively consistent with a rectified drag signal induced by charge fluctuations. However, the nonmonotonic temperature dependence of this drag signal suggests that strong electron-electron interactions, expected within the Tomonaga-Luttinger liquid framework, remain important and standard interaction models are insufficient to capture the qualitative nature of rectified 1D Coulomb drag.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
NA0003525
OSTI ID:
2311239
Alternate ID(s):
OSTI ID: 2474551
Report Number(s):
SAND--2024-01625J
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 8 Vol. 109; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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