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Title: Topological quantization of energy transport in micromechanical and nanomechanical lattices

Topological effects typically discussed in the context of quantum physics are emerging as one of the central paradigms of physics. Here in this study, we demonstrate the role of topology in energy transport through dimerized micro- and nanomechanical lattices in the classical regime, i.e., essentially “masses and springs.” We show that the thermal conductance factorizes into topological and nontopological components. The former takes on three discrete values and arises due to the appearance of edge modes that prevent good contact between the heat reservoirs and the bulk, giving a length-independent reduction of the conductance. In essence, energy input at the boundary mostly stays there, an effect robust against disorder and nonlinearity. In conclusion, these results bridge two seemingly disconnected disciplines of physics, namely topology and thermal transport, and suggest ways to engineer thermal contacts, opening a direction to explore the ramifications of topological properties on nanoscale technology.
Authors:
 [1] ; ORCiD logo [2] ;  [3] ;  [4] ;  [4]
  1. University of California, Merced, CA (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Ben-Gurion University of the Negev, Beer-Sheva (Israel)
  4. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Publication Date:
Report Number(s):
LA-UR-18-28758
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 12; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1471317
Alternate Identifier(s):
OSTI ID: 1427559

Chien, Chih-Chun, Velizhanin, Kirill A., Dubi, Yonatan, Ilic, B. Robert, and Zwolak, Michael. Topological quantization of energy transport in micromechanical and nanomechanical lattices. United States: N. p., Web. doi:10.1103/PhysRevB.97.125425.
Chien, Chih-Chun, Velizhanin, Kirill A., Dubi, Yonatan, Ilic, B. Robert, & Zwolak, Michael. Topological quantization of energy transport in micromechanical and nanomechanical lattices. United States. doi:10.1103/PhysRevB.97.125425.
Chien, Chih-Chun, Velizhanin, Kirill A., Dubi, Yonatan, Ilic, B. Robert, and Zwolak, Michael. 2018. "Topological quantization of energy transport in micromechanical and nanomechanical lattices". United States. doi:10.1103/PhysRevB.97.125425.
@article{osti_1471317,
title = {Topological quantization of energy transport in micromechanical and nanomechanical lattices},
author = {Chien, Chih-Chun and Velizhanin, Kirill A. and Dubi, Yonatan and Ilic, B. Robert and Zwolak, Michael},
abstractNote = {Topological effects typically discussed in the context of quantum physics are emerging as one of the central paradigms of physics. Here in this study, we demonstrate the role of topology in energy transport through dimerized micro- and nanomechanical lattices in the classical regime, i.e., essentially “masses and springs.” We show that the thermal conductance factorizes into topological and nontopological components. The former takes on three discrete values and arises due to the appearance of edge modes that prevent good contact between the heat reservoirs and the bulk, giving a length-independent reduction of the conductance. In essence, energy input at the boundary mostly stays there, an effect robust against disorder and nonlinearity. In conclusion, these results bridge two seemingly disconnected disciplines of physics, namely topology and thermal transport, and suggest ways to engineer thermal contacts, opening a direction to explore the ramifications of topological properties on nanoscale technology.},
doi = {10.1103/PhysRevB.97.125425},
journal = {Physical Review B},
number = 12,
volume = 97,
place = {United States},
year = {2018},
month = {3}
}