Type
ArticleKAUST Department
Computational Physics and Materials Science (CPMS)Functional Nanomaterials and Devices Research Group
Material Science and Engineering Program
Physical Science and Engineering (PSE) Division
Date
2016-11-21Online Publication Date
2016-11-21Print Publication Date
2017-01-25Permanent link to this record
http://hdl.handle.net/10754/622485
Metadata
Show full item recordAbstract
We solve numerically the Boltzmann transport equations of the phonons and electrons to understand the thermoelectric response in heterostructures of M2CO2 (M: Ti, Zr, Hf) MXenes with transition metal dichalcogenide monolayers. Low frequency optical phonons are found to occur as a consequence of the van der Waals bonding, contribute significantly to the thermal transport, and compensate for the reduced contributions of the acoustic phonons (increased scattering cross-sections in heterostructures), such that the thermal conductivities turn out to be similar to those of the bare MXenes. Our results indicate that the important superlattice design approach of thermoelectrics (to reduce the thermal conductivity) may be effective for two-dimensional van der Waals materials when used in conjunction with intercalation. © 2016 IOP Publishing Ltd.Citation
Gandi AN, Alshareef HN, Schwingenschlögl U (2016) Thermal response in van der Waals heterostructures. Journal of Physics: Condensed Matter 29: 035504. Available: http://dx.doi.org/10.1088/1361-648X/29/3/035504.Sponsors
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). Computational resources were provided by the Supercomputing Laboratory of KAUST.Publisher
IOP PublishingAdditional Links
http://iopscience.iop.org/article/10.1088/1361-648X/29/3/035504/meta;jsessionid=CE461FBB9D85DA3CDC27A9A2B3A0F519.c2.iopscience.cld.iop.orgae974a485f413a2113503eed53cd6c53
10.1088/1361-648X/29/3/035504