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Title: Quantum engineered Kondo lattices

Abstract

Atomic manipulation techniques have provided a bottom-up approach to investigating the unconventional properties and complex phases of strongly correlated electron materials. By engineering artificial systems containing tens to thousands of atoms with tailored electronic or magnetic properties, it has become possible to explore how quantum many-body effects emerge as the size of a system is increased from the nanoscale to the mesoscale. Here we investigate both theoretically and experimentally the quantum engineering of nanoscale Kondo lattices – Kondo droplets – exemplifying nanoscopic replicas of heavy-fermion materials. We demonstrate that by changing a droplet’s real-space geometry, we can not only create coherently coupled Kondo droplets whose properties asymptotically approach those of a quantum-coherent Kondo lattice, but also markedly increase or decrease the droplet’s Kondo temperature. Furthermore we report on the discovery of a new quantum phenomenon – the Kondo echo – a signature of droplets containing Kondo holes functioning as direct probes of spatially extended, quantum-coherent Kondo cloud correlations.

Authors:
 [1];  [2];  [2];  [2];  [2]; ORCiD logo [1]
  1. Univ. of Illinois, Chicago, IL (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States). Dept. of Physics
Publication Date:
Research Org.:
Univ. of Chicago, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1593520
Alternate Identifier(s):
OSTI ID: 1574368
Grant/Contract Number:  
FG02-05ER46225; AC02-76SF00515
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Figgins, Jeremy, Mattos, Laila S., Mar, Warren, Chen, Yi-Ting, Manoharan, Hari C., and Morr, Dirk K. Quantum engineered Kondo lattices. United States: N. p., 2019. Web. doi:10.1038/s41467-019-13446-1.
Figgins, Jeremy, Mattos, Laila S., Mar, Warren, Chen, Yi-Ting, Manoharan, Hari C., & Morr, Dirk K. Quantum engineered Kondo lattices. United States. doi:10.1038/s41467-019-13446-1.
Figgins, Jeremy, Mattos, Laila S., Mar, Warren, Chen, Yi-Ting, Manoharan, Hari C., and Morr, Dirk K. Fri . "Quantum engineered Kondo lattices". United States. doi:10.1038/s41467-019-13446-1. https://www.osti.gov/servlets/purl/1593520.
@article{osti_1593520,
title = {Quantum engineered Kondo lattices},
author = {Figgins, Jeremy and Mattos, Laila S. and Mar, Warren and Chen, Yi-Ting and Manoharan, Hari C. and Morr, Dirk K.},
abstractNote = {Atomic manipulation techniques have provided a bottom-up approach to investigating the unconventional properties and complex phases of strongly correlated electron materials. By engineering artificial systems containing tens to thousands of atoms with tailored electronic or magnetic properties, it has become possible to explore how quantum many-body effects emerge as the size of a system is increased from the nanoscale to the mesoscale. Here we investigate both theoretically and experimentally the quantum engineering of nanoscale Kondo lattices – Kondo droplets – exemplifying nanoscopic replicas of heavy-fermion materials. We demonstrate that by changing a droplet’s real-space geometry, we can not only create coherently coupled Kondo droplets whose properties asymptotically approach those of a quantum-coherent Kondo lattice, but also markedly increase or decrease the droplet’s Kondo temperature. Furthermore we report on the discovery of a new quantum phenomenon – the Kondo echo – a signature of droplets containing Kondo holes functioning as direct probes of spatially extended, quantum-coherent Kondo cloud correlations.},
doi = {10.1038/s41467-019-13446-1},
journal = {Nature Communications},
number = 1,
volume = 10,
place = {United States},
year = {2019},
month = {12}
}

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