Asset Details

MbrlCatalogueTitleDetail

Do you wish to reserve the book?

Intrinsic anharmonic localization in thermoelectric PbSe

by Minnich, A. J. , Manley, M. E. , Hellman, O. , Garlea, V. O. , Alatas, A. , Wang, H. , May, A. F. , Lynn, J. W. , Shulumba, N. , Hermann, R. P. , Stonaha, P. J. , Budai, J. D. , Sales, B. C.

in 639/301/299/2736 / 639/766/530/2803 / Acoustic propagation / Anharmonicity / Crystals / Disruption / Group velocity / High temperature / Humanities and Social Sciences / Lattice vibration / Lead / Lead selenides / Localization / MATERIALS SCIENCE / multidisciplinary / Neutron scattering / Phonons / Science / Science (multidisciplinary) / Sharpening / Thermal conductivity / Thermoelectric materials / Thermoelectricity / Transport properties

2019

Yes Please

Hey, we have placed the reservation for you!

By the way, why not check out events that you can attend while you pick your title.

Oops! Something went wrong.

Looks like we were not able to place the reservation. Kindly try again later.

Are you sure you want to remove the book from the shelf?

Intrinsic anharmonic localization in thermoelectric PbSe

by Minnich, A. J. , Manley, M. E. , Hellman, O. , Garlea, V. O. , Alatas, A. , Wang, H. , May, A. F. , Lynn, J. W. , Shulumba, N. , Hermann, R. P. , Stonaha, P. J. , Budai, J. D. , Sales, B. C.

2019

Confirm

Do you wish to request the book?

Intrinsic anharmonic localization in thermoelectric PbSe

by Minnich, A. J. , Manley, M. E. , Hellman, O. , Garlea, V. O. , Alatas, A. , Wang, H. , May, A. F. , Lynn, J. W. , Shulumba, N. , Hermann, R. P. , Stonaha, P. J. , Budai, J. D. , Sales, B. C.

2019

Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy

How would you like to get it?

Submit

We have requested the book for you!

Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.

Oops! Something went wrong.

Looks like we were not able to place your request. Kindly try again later.

Journal Article

Intrinsic anharmonic localization in thermoelectric PbSe

Minnich, A. J.,

Manley, M. E.,

Hellman, O.,

Garlea, V. O.,

Alatas, A.,

Wang, H.,

May, A. F.,

Lynn, J. W.,

Shulumba, N.,

Hermann, R. P.,

Stonaha, P. J.,

Budai, J. D.,

Sales, B. C.

2019

Overview

Lead chalcogenides have exceptional thermoelectric properties and intriguing anharmonic lattice dynamics underlying their low thermal conductivities. An ideal material for thermoelectric efficiency is the phonon glass–electron crystal, which drives research on strategies to scatter or localize phonons while minimally disrupting electronic-transport. Anharmonicity can potentially do both, even in perfect crystals, and simulations suggest that PbSe is anharmonic enough to support intrinsic localized modes that halt transport. Here, we experimentally observe high-temperature localization in PbSe using neutron scattering but find that localization is not limited to isolated modes – zero group velocity develops for a significant section of the transverse optic phonon on heating above a transition in the anharmonic dynamics. Arrest of the optic phonon propagation coincides with unusual sharpening of the longitudinal acoustic mode due to a loss of phase space for scattering. Our study shows how nonlinear physics beyond conventional anharmonic perturbations can fundamentally alter vibrational transport properties. To optimize the performance of lead chalcogenides for thermoelectric applications, strategies to further reduce the crystal’s thermal conductivity is required. Here, the authors discover anharmonic localized vibrations in PbSe crystals for optimizing the crystal’s vibrational transport properties.

Share this book

Add to My Shelf

Publisher

Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio

Subject

639/301/299/2736

/ 639/766/530/2803

/ Acoustic propagation