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Title: All- 3d Electron-Hole Bilayers in CrN / MgO ( 111 ) Multilayers for Thermoelectric Applications

Abstract

CrN/MgO(111) multilayers modeled via ab initio calculations give rise to nanoscale, scalable, spatially separated two-dimensional electron and hole gases, each confined to its own CrN interface. Because of the Cr 3d3 configuration, both electron and hole gases are based on correlated transition-metal layers involving bands of 3d character. Furthermore, transport calculations predict each subsystem will have a large thermopower, on the order of 250 μV/K at room temperature. These heterostructures combine a large thermoelectric efficiency with scalable nanoscale conducting sheets; for example, operating at a temperature difference of 50 K, 40 bilayers could produce a 1-V voltage with a film thickness of 100 nm.

Authors:
 [1];  [2];  [1]
+ Show Author Affiliations
  1. Univ. of California, Davis, CA (United States)
  2. Univ. de Santiago de Compostela (Spain); Univ. de Santiago de Compostela (Spain). Inst. de Investigacions Tecnoloxicas
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1535759
Alternate Identifier(s):
OSTI ID: 1342808
Grant/Contract Number:  
FG02-04ER46111; AC02-05CH11231; RyC-2011-09024
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Applied
Additional Journal Information:
Journal Volume: 7; Journal Issue: 2; Journal ID: ISSN 2331-7019
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; thermoelectric effects; multilayer thin films; nitrides; oxides; thermoelectric systems; two-dimensional electron gas

Citation Formats

Botana, Antia S., Pardo, Victor, and Pickett, Warren E. All- 3d Electron-Hole Bilayers in CrN/MgO(111) Multilayers for Thermoelectric Applications. United States: N. p., 2017. Web. doi:10.1103/physrevapplied.7.024002.
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Botana, Antia S., Pardo, Victor, & Pickett, Warren E. All- 3d Electron-Hole Bilayers in CrN/MgO(111) Multilayers for Thermoelectric Applications. United States. https://doi.org/10.1103/physrevapplied.7.024002
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Botana, Antia S., Pardo, Victor, and Pickett, Warren E. Wed . "All- 3d Electron-Hole Bilayers in CrN/MgO(111) Multilayers for Thermoelectric Applications". United States. https://doi.org/10.1103/physrevapplied.7.024002. https://www.osti.gov/servlets/purl/1535759.
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@article{osti_1535759,
title = {All- 3d Electron-Hole Bilayers in CrN/MgO(111) Multilayers for Thermoelectric Applications},
author = {Botana, Antia S. and Pardo, Victor and Pickett, Warren E.},
abstractNote = {CrN/MgO(111) multilayers modeled via ab initio calculations give rise to nanoscale, scalable, spatially separated two-dimensional electron and hole gases, each confined to its own CrN interface. Because of the Cr 3d3 configuration, both electron and hole gases are based on correlated transition-metal layers involving bands of 3d character. Furthermore, transport calculations predict each subsystem will have a large thermopower, on the order of 250 μV/K at room temperature. These heterostructures combine a large thermoelectric efficiency with scalable nanoscale conducting sheets; for example, operating at a temperature difference of 50 K, 40 bilayers could produce a 1-V voltage with a film thickness of 100 nm.},
doi = {10.1103/physrevapplied.7.024002},
journal = {Physical Review Applied},
number = 2,
volume = 7,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}
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https://doi.org/10.1103/physrevapplied.7.024002
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    Works referencing / citing this record:

    Reduction of the thermal conductivity of the thermoelectric material ScN by Nb alloying
    journal, July 2017

    • Tureson, Nina; Van Nong, Ngo; Fournier, Daniele
    • Journal of Applied Physics, Vol. 122, Issue 2
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    Enhancing Thermoelectric Performance Using Nonlinear Transport Effects
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    Enhancing Thermoelectric Performance Using Nonlinear Transport Effects
    text, January 2016

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