Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature

Eric Langenberg, Dipanjan Saha, Megan E. Holtz, Jian Jun Wang, David Bugallo, Elias Ferreiro-Vila, Hanjong Paik, Isabelle Hanke, Steffen Ganschow, David A. Muller, Long Qing Chen, Gustau Catalan, Neus Domingo, Jonathan Malen, Darrell G. Schlom, Francisco Rivadulla

Research output: Contribution to journalArticle

Abstract

Achieving efficient spatial modulation of phonon transmission is an essential step on the path to phononic circuits using "phonon currents". With their intrinsic and reconfigurable interfaces, domain walls (DWs), ferroelectrics are alluring candidates to be harnessed as dynamic heat modulators. This paper reports the thermal conductivity of single-crystal PbTiO3 thin films over a wide variety of epitaxial-strain-engineered ferroelectric domain configurations. The phonon transport is proved to be strongly affected by the density and type of DWs, achieving a 61% reduction of the roomerature thermal conductivity compared to the single-domain scenario. The thermal resistance across the ferroelectric DWs is obtained, revealing a very high value (≈5.0 × 10-9 K m2 W-1), comparable to grain boundaries in oxides, explaining the strong modulation of the thermal conductivity in PbTiO3. This low thermal conductance of the DWs is ascribed to the structural mismatch and polarization gradient found between the different types of domains in the PbTiO3 films, resulting in a structural inhomogeneity that extends several unit cells around the DWs. These findings demonstrate the potential of ferroelectric DWs as efficient regulators of heat flow in one single material, overcoming the complexity of multilayers systems and the uncontrolled distribution of grain boundaries, paving the way for applications in phononics.

Original languageEnglish (US)
Pages (from-to)7901-7907
Number of pages7
JournalNano letters
Volume19
Issue number11
DOIs
StatePublished - Nov 13 2019

Fingerprint

Domain walls
regulators
heat transmission
Ferroelectric materials
domain wall
Heat transfer
room temperature
Thermal conductivity
thermal conductivity
Temperature
Grain boundaries
grain boundaries
Modulation
modulation
thermal resistance
Heat resistance
Oxides
Modulators
modulators
Multilayers

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Langenberg, E., Saha, D., Holtz, M. E., Wang, J. J., Bugallo, D., Ferreiro-Vila, E., ... Rivadulla, F. (2019). Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature. Nano letters, 19(11), 7901-7907. https://doi.org/10.1021/acs.nanolett.9b02991
Langenberg, Eric ; Saha, Dipanjan ; Holtz, Megan E. ; Wang, Jian Jun ; Bugallo, David ; Ferreiro-Vila, Elias ; Paik, Hanjong ; Hanke, Isabelle ; Ganschow, Steffen ; Muller, David A. ; Chen, Long Qing ; Catalan, Gustau ; Domingo, Neus ; Malen, Jonathan ; Schlom, Darrell G. ; Rivadulla, Francisco. / Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature. In: Nano letters. 2019 ; Vol. 19, No. 11. pp. 7901-7907.
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Langenberg, E, Saha, D, Holtz, ME, Wang, JJ, Bugallo, D, Ferreiro-Vila, E, Paik, H, Hanke, I, Ganschow, S, Muller, DA, Chen, LQ, Catalan, G, Domingo, N, Malen, J, Schlom, DG & Rivadulla, F 2019, 'Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature', Nano letters, vol. 19, no. 11, pp. 7901-7907. https://doi.org/10.1021/acs.nanolett.9b02991

Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature. / Langenberg, Eric; Saha, Dipanjan; Holtz, Megan E.; Wang, Jian Jun; Bugallo, David; Ferreiro-Vila, Elias; Paik, Hanjong; Hanke, Isabelle; Ganschow, Steffen; Muller, David A.; Chen, Long Qing; Catalan, Gustau; Domingo, Neus; Malen, Jonathan; Schlom, Darrell G.; Rivadulla, Francisco.

In: Nano letters, Vol. 19, No. 11, 13.11.2019, p. 7901-7907.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ferroelectric Domain Walls in PbTiO3 Are Effective Regulators of Heat Flow at Room Temperature

AU - Langenberg, Eric

AU - Saha, Dipanjan

AU - Holtz, Megan E.

AU - Wang, Jian Jun

AU - Bugallo, David

AU - Ferreiro-Vila, Elias

AU - Paik, Hanjong

AU - Hanke, Isabelle

AU - Ganschow, Steffen

AU - Muller, David A.

AU - Chen, Long Qing

AU - Catalan, Gustau

AU - Domingo, Neus

AU - Malen, Jonathan

AU - Schlom, Darrell G.

AU - Rivadulla, Francisco

PY - 2019/11/13

Y1 - 2019/11/13

N2 - Achieving efficient spatial modulation of phonon transmission is an essential step on the path to phononic circuits using "phonon currents". With their intrinsic and reconfigurable interfaces, domain walls (DWs), ferroelectrics are alluring candidates to be harnessed as dynamic heat modulators. This paper reports the thermal conductivity of single-crystal PbTiO3 thin films over a wide variety of epitaxial-strain-engineered ferroelectric domain configurations. The phonon transport is proved to be strongly affected by the density and type of DWs, achieving a 61% reduction of the roomerature thermal conductivity compared to the single-domain scenario. The thermal resistance across the ferroelectric DWs is obtained, revealing a very high value (≈5.0 × 10-9 K m2 W-1), comparable to grain boundaries in oxides, explaining the strong modulation of the thermal conductivity in PbTiO3. This low thermal conductance of the DWs is ascribed to the structural mismatch and polarization gradient found between the different types of domains in the PbTiO3 films, resulting in a structural inhomogeneity that extends several unit cells around the DWs. These findings demonstrate the potential of ferroelectric DWs as efficient regulators of heat flow in one single material, overcoming the complexity of multilayers systems and the uncontrolled distribution of grain boundaries, paving the way for applications in phononics.

AB - Achieving efficient spatial modulation of phonon transmission is an essential step on the path to phononic circuits using "phonon currents". With their intrinsic and reconfigurable interfaces, domain walls (DWs), ferroelectrics are alluring candidates to be harnessed as dynamic heat modulators. This paper reports the thermal conductivity of single-crystal PbTiO3 thin films over a wide variety of epitaxial-strain-engineered ferroelectric domain configurations. The phonon transport is proved to be strongly affected by the density and type of DWs, achieving a 61% reduction of the roomerature thermal conductivity compared to the single-domain scenario. The thermal resistance across the ferroelectric DWs is obtained, revealing a very high value (≈5.0 × 10-9 K m2 W-1), comparable to grain boundaries in oxides, explaining the strong modulation of the thermal conductivity in PbTiO3. This low thermal conductance of the DWs is ascribed to the structural mismatch and polarization gradient found between the different types of domains in the PbTiO3 films, resulting in a structural inhomogeneity that extends several unit cells around the DWs. These findings demonstrate the potential of ferroelectric DWs as efficient regulators of heat flow in one single material, overcoming the complexity of multilayers systems and the uncontrolled distribution of grain boundaries, paving the way for applications in phononics.

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