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Title: Liquid-like thermal conduction in intercalated layered crystalline solids

Journal Article · · Nature Materials
 [1]; ORCiD logo [2];  [1]; ORCiD logo [3];  [4];  [5];  [6];  [7];  [1];  [1];  [8];  [9];  [5];  [6];  [3];  [2];  [1];  [10]
  1. Japan Atomic Energy Agency, Tokai, Ibaraki (Japan). J-PARC Center
  2. Univ. of California, Irvine, CA (United States). Department of Physics and Astronomy
  3. Ames Lab. and Iowa State Univ., Ames, IA (United States). Department of Physics and Astronomy
  4. Julich Center for Neutron Science, Forschungszentrum Julich GmbH (Germany)
  5. Univ. of Hong Kong (China). Department of Mechanical Engineering
  6. Southern University of Science and Technology (SUSTech), Shenzhen (China). Department of Physics
  7. Japan Synchrotron Radiation Research Institute, Sayo, Hyogo (Japan). SPring-8
  8. Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki (Japan). Neutron Science and Technology Center
  9. Hebei University, Baoding (China). Hebei Key Lab of Optic-electronic Information and Materials, The College of Physics Science and Technology
  10. Northwestern Univ., Evanston, IL (United States). Department of Chemistry

As a generic property, all substances transfer heat through microscopic collisions of constituent particles. A solid conducts heat through both transverse and longitudinal acoustic phonons, but a liquid employs only longitudinal vibrations. As a result, a solid is usually thermally more conductive than a liquid. In canonical viewpoints, such a difference also serves as the dynamic signature distinguishing a solid from a liquid. Here in this work, we report liquid-like thermal conduction observed in the crystalline AgCrSe2. The transverse acoustic phonons are completely suppressed by the ultrafast dynamic disorder while the longitudinal acoustic phonons are strongly scattered but survive, and are thus responsible for the intrinsically ultralow thermal conductivity. This scenario is applicable to a wide variety of layered compounds with heavy intercalants in the van der Waals gaps, manifesting a broad implication on suppressing thermal conduction. Finally, these microscopic insights might reshape the fundamental understanding on thermal transport properties of matter and open up a general opportunity to optimize performances of thermoelectrics.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-07CH11358; FG02-05ER46237
OSTI ID:
1427732
Report Number(s):
IS-J-9604; PII: 4; TRN: US1802604
Journal Information:
Nature Materials, Vol. 17, Issue 3; ISSN 1476-1122
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 96 works
Citation information provided by
Web of Science

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Cited By (16)

High Thermoelectric Performance Achieved in GeTe–Bi 2 Te 3 Pseudo‐Binary via Van der Waals Gap‐Induced Hierarchical Ferroelectric Domain Structure journal February 2019
Recent Advances in Liquid‐Like Thermoelectric Materials journal August 2019
Diffused Lattice Vibration and Ultralow Thermal Conductivity in the Binary Ln–Nb–O Oxide System journal April 2019
Giant Piezoelectric Response in Superionic Polar Semiconductor journal September 2018
Copper chalcogenide thermoelectric materials journal August 2018
Selective breakdown of phonon quasiparticles across superionic transition in CuCrSe2 journal October 2018
Engineering ferroelectric instability to achieve ultralow thermal conductivity and high thermoelectric performance in Sn 1−x Ge x Te journal January 2019
Bonding heterogeneity and lone pair induced anharmonicity resulted in ultralow thermal conductivity and promising thermoelectric properties in n-type AgPbBiSe 3 journal January 2019
Direct atomic-scale observation of the Ag + diffusion structure in the quasi-2D “liquid-like” state of superionic thermoelectric AgCrSe 2 journal January 2019
A suite-level review of the neutron powder diffraction instruments at Oak Ridge National Laboratory journal September 2018
Anharmonic lattice dynamics and superionic transition in AgCrSe 2 journal February 2020
Rationalizing phonon dispersion for lattice thermal conductivity of solids journal September 2018
Time-resolved pair distribution function analysis of disordered materials on beamlines BL04B2 and BL08W at SPring-8 journal September 2018
Time-resolved pair distribution function analysis of disordered materials on beamlines BL04B2 and BL08W at SPring-8 text January 2018
Bonding heterogeneity and lone pair induced anharmonicity resulted in ultralow thermal conductivity and promising thermoelectric properties in n-type $AgPbBiSe_{3}$ text January 2019
Ultralow thermal conductivity from transverse acoustic phonon suppression in distorted crystalline α-MgAgSb journal February 2020

Figures / Tables (5)