| Title |
Thermal Conductivity in Individual Single-Crystalline PbTe Nanowires |
| Authors |
노종욱(Jong Wook Roh); 장소영(So Young Jang); 강주훈(Joo Hoon Kang); 이승현(Seung Hyun Lee); 노진서(Jin Seo Noh); 박정희(Jeung Hee Park); 이우영(Woo Young Lee) |
| DOI |
https://doi.org/10.3365/KJMM.2010.48.02.175 |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
PbTe; thermoelectric materials; thermal conductivity; crystal growth; focused ion beam |
| Abstract |
We investigated the thermal conductivity of individual single-crystalline PbTe nanowires grown by chemical vapor transport method. Suspended MEMS was utilized to precisely measure the thermal conductivity of an individual nanowire. The thermal conductivity of a PbTe nanowire with diameter of 292 nm was measured to be 1.8 W/m·K at 300 K, which is about two thirds of that of bulk PbTe. This result indicates that the thermal conduction through a PbTe nanowire is effectively suppressed by the enhanced phonon boundary scattering. As the diameter of a PbTe nanowire decreases, the corresponding thermal conductivity linearly decreases. |