Thermoelectrics with a twist

doi:10.1038/s41563-019-0523-0

This content will become publicly available on October 28, 2020

Title: Thermoelectrics with a twist

Full Record
Other Related Research

Abstract

Thermoelectrics convert heat into electricity by enabling electron flow across a temperature gradient, but internal electrical resistance from Joule heating is a key limiting factor to conversion efficiency. In the pursuit of material platforms for the next generation of thermoelectrics, topological materials with high electron mobility, including topological insulators and topological semimetals, have attracted substantial attention. Topological insulators support protected current-carrying electron states that are robust to perturbations, reducing electrical resistance.

Authors:

^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: 2019-10-28

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

OSTI Identifier:: 1572368

Report Number(s):: BNL-212241-2019-JAAM
Journal ID: ISSN 1476--1122

Grant/Contract Number:: SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Nature Materials

Additional Journal Information:: Journal Volume: 18; Journal Issue: 12; Journal ID: ISSN 1476--1122

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Li, Qiang. Thermoelectrics with a twist.  United States: N. p., 2019. 
        Web.  doi:10.1038/s41563-019-0523-0.

Copy to clipboard


                    Li, Qiang. Thermoelectrics with a twist.  United States.  doi:10.1038/s41563-019-0523-0.

Copy to clipboard


                    Li, Qiang. Mon .  
        "Thermoelectrics with a twist".  United States.  doi:10.1038/s41563-019-0523-0.

Copy to clipboard


                    
@article{osti_1572368,

  title        = {Thermoelectrics with a twist},

  author       = {Li, Qiang},

  abstractNote = {Thermoelectrics convert heat into electricity by enabling electron flow across a temperature gradient, but internal electrical resistance from Joule heating is a key limiting factor to conversion efficiency. In the pursuit of material platforms for the next generation of thermoelectrics, topological materials with high electron mobility, including topological insulators and topological semimetals, have attracted substantial attention. Topological insulators support protected current-carrying electron states that are robust to perturbations, reducing electrical resistance.},

  doi          = {10.1038/s41563-019-0523-0},

  journal      = {Nature Materials},

  number       = 12,

  volume       = 18,

  place        = {United States},

  year         = {2019},

  month        = {10}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

This content will become publicly available on October 28, 2020

Publisher's Version of Record

DOI: 10.1038/s41563-019-0523-0

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Enhanced thermoelectric performance of nanostructured topological insulator Bi{sub 2}Se{sub 3}

Journal Article Sun, G. L. ; School of Physics and Materials Science, Anhui University, Hefei 230039 ; Li, L. L. ; ... - Applied Physics Letters

To enhance thermoelectric performance by utilizing topological properties of topological insulators has attracted increasing attention. Here, we show that as grain size decreases from microns to ∼80 nm in thickness, the electron mobility μ increases steeply from 12–15 cm{sup 2} V{sup −1} s{sup −1} to ∼600 cm{sup 2} V{sup −1} s{sup −1}, owing to the contribution of increased topologically protected conducting surfaces. Simultaneously, its lattice thermal conductivity is lowered by ∼30%–50% due to enhanced phonon scattering from the increased grain boundaries. As a result, thermoelectric figure of merit, ZT, of all the fine-grained samples is improved. Specifically, a maximum value of ZT = ∼0.63 is achieved for Bi{sub 2}Se{submore » 3} at T = ∼570 K.« less
DOI: 10.1063/1.4907252
SISGR: Atom chip microscopy: A novel probe for strongly correlated materials

Technical Report Lev, Benjamin L.

Microscopy techniques co-opted from nonlinear optics and high energy physics have complemented solid-state probes in elucidating the order manifest in condensed matter materials. Up until now, however, no attempts have been made to use modern techniques of ultracold atomic physics to directly explore properties of strongly correlated or topologically protected materials. Our current program is focused on introducing a novel magnetic field microscopy technique into the toolbox of imaging probes. Our prior DOE ESPM program funded the development of a novel instrument using a dilute gas Bose-Einstein condensate (BEC) as a scanning probe capable of measuring tiny magnetic (and electric)more »« less
Magnetic quantum phase transition in Cr-doped Bi ₂(Se _xTe _1-x) ₃ driven by the Stark effect

Journal Article Zhang, Zuocheng ; Feng, Xiao ; Wang, Jing ; ... - Nature Nanotechnology

The interplay between magnetism and topology, as exemplified in the magnetic skyrmion systems, has emerged as a rich playground for finding novel quantum phenomena and applications in future information technology. Magnetic topological insulators (TI) have attracted much recent attention, especially after the experimental realization of quantum anomalous Hall effect. Future applications of magnetic TI hinge on the accurate manipulation of magnetism and topology by external perturbations, preferably with a gate electric field. In this work, we investigate the magneto transport properties of Cr doped Bi ₂(Se _xTe _1-x) ₃ TI across the topological quantum critical point (QCP). We find thatmore »« less
Cited by 2
DOI: 10.1038/nnano.2017.149

Full Text Available
Magnetic quantum phase transition in Cr-doped Bi ₂(Se _xTe _1-x) ₃ driven by the Stark effect

Journal Article Zhang, Zuocheng ; Feng, Xiao ; Wang, Jing ; ... - Nature Nanotechnology

The interplay between magnetism and topology, as exemplified in the magnetic skyrmion systems, has emerged as a rich playground for finding novel quantum phenomena and applications in future information technology. Magnetic topological insulators (TI) have attracted much recent attention, especially after the experimental realization of quantum anomalous Hall effect. Future applications of magnetic TI hinge on the accurate manipulation of magnetism and topology by external perturbations, preferably with a gate electric field. In this work, we investigate the magneto transport properties of Cr doped Bi ₂(Se _xTe _1-x) ₃ TI across the topological quantum critical point (QCP). We find thatmore »« less
Cited by 2
DOI: 10.1038/NNANO.2017.149

Full Text Available
Record-Low and Anisotropic Thermal Conductivity of a Quasi-One-Dimensional Bulk ZrTe ₅ Single Crystal

Journal Article Zhu, Jie ; Feng, Tianli ; Mills, Scott ; ... - ACS Applied Materials and Interfaces

Zirconium pentatelluride (ZrTe ₅) has recently attracted renewed interest owing to many of its newly discovered extraordinary physical properties, such as 2D and 3D topological-insulator behavior, pressure-induced superconductivity, Weyl semimetal behavior, Zeeman splitting, and resistivity anomaly. The quasi-one-dimensional structure of single-crystal ZrTe ₅ also promises large anisotropy in its thermal properties, which have not yet been studied. In this work, via time-domain thermoreflectance measurements, ZrTe ₅ single crystals are discovered to possess a record-low thermal conductivity along the b-axis (through-plane), as small as 0.33 ± 0.03 W m ^–1 K ^–1 at room temperature. This ultralow b-axis thermal conductivity ismore »« less
Cited by 1
DOI: 10.1021/acsami.8b12504

Full Text Available

Similar Records