Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal
© 2020, The Author(s). Thermoelectrics are promising by directly generating electricity from waste heat. However, (sub-)room-temperature thermoelectrics have been a long-standing challenge due to vanishing electronic entropy at low temperatures. Topological materials offer a new avenue for energy ha...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/133318 |
| _version_ | 1811083914377166848 |
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| author | Han, Fei Andrejevic, Nina Nguyen, Thanh Kozii, Vladyslav Nguyen, Quynh T Hogan, Tom Ding, Zhiwei Pablo-Pedro, Ricardo Parjan, Shreya Skinner, Brian Alatas, Ahmet Alp, Ercan Chi, Songxue Fernandez-Baca, Jaime Huang, Shengxi Fu, Liang Li, Mingda |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Han, Fei Andrejevic, Nina Nguyen, Thanh Kozii, Vladyslav Nguyen, Quynh T Hogan, Tom Ding, Zhiwei Pablo-Pedro, Ricardo Parjan, Shreya Skinner, Brian Alatas, Ahmet Alp, Ercan Chi, Songxue Fernandez-Baca, Jaime Huang, Shengxi Fu, Liang Li, Mingda |
| author_sort | Han, Fei |
| collection | MIT |
| description | © 2020, The Author(s). Thermoelectrics are promising by directly generating electricity from waste heat. However, (sub-)room-temperature thermoelectrics have been a long-standing challenge due to vanishing electronic entropy at low temperatures. Topological materials offer a new avenue for energy harvesting applications. Recent theories predicted that topological semimetals at the quantum limit can lead to a large, non-saturating thermopower and a quantized thermoelectric Hall conductivity approaching a universal value. Here, we experimentally demonstrate the non-saturating thermopower and quantized thermoelectric Hall effect in the topological Weyl semimetal (WSM) tantalum phosphide (TaP). An ultrahigh longitudinal thermopower Sxx~1.1×103μVK−1 and giant power factor ~525μWcm−1K−2 are observed at ~40 K, which is largely attributed to the quantized thermoelectric Hall effect. Our work highlights the unique quantized thermoelectric Hall effect realized in a WSM toward low-temperature energy harvesting applications. |
| first_indexed | 2024-09-23T12:41:37Z |
| format | Article |
| id | mit-1721.1/133318 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:41:37Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1333182023-09-12T20:07:05Z Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal Han, Fei Andrejevic, Nina Nguyen, Thanh Kozii, Vladyslav Nguyen, Quynh T Hogan, Tom Ding, Zhiwei Pablo-Pedro, Ricardo Parjan, Shreya Skinner, Brian Alatas, Ahmet Alp, Ercan Chi, Songxue Fernandez-Baca, Jaime Huang, Shengxi Fu, Liang Li, Mingda Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Physics © 2020, The Author(s). Thermoelectrics are promising by directly generating electricity from waste heat. However, (sub-)room-temperature thermoelectrics have been a long-standing challenge due to vanishing electronic entropy at low temperatures. Topological materials offer a new avenue for energy harvesting applications. Recent theories predicted that topological semimetals at the quantum limit can lead to a large, non-saturating thermopower and a quantized thermoelectric Hall conductivity approaching a universal value. Here, we experimentally demonstrate the non-saturating thermopower and quantized thermoelectric Hall effect in the topological Weyl semimetal (WSM) tantalum phosphide (TaP). An ultrahigh longitudinal thermopower Sxx~1.1×103μVK−1 and giant power factor ~525μWcm−1K−2 are observed at ~40 K, which is largely attributed to the quantized thermoelectric Hall effect. Our work highlights the unique quantized thermoelectric Hall effect realized in a WSM toward low-temperature energy harvesting applications. 2021-10-27T19:52:05Z 2021-10-27T19:52:05Z 2020 2021-08-11T16:57:03Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/133318 en 10.1038/S41467-020-19850-2 Nature Communications Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Nature |
| spellingShingle | Han, Fei Andrejevic, Nina Nguyen, Thanh Kozii, Vladyslav Nguyen, Quynh T Hogan, Tom Ding, Zhiwei Pablo-Pedro, Ricardo Parjan, Shreya Skinner, Brian Alatas, Ahmet Alp, Ercan Chi, Songxue Fernandez-Baca, Jaime Huang, Shengxi Fu, Liang Li, Mingda Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal |
| title | Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal |
| title_full | Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal |
| title_fullStr | Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal |
| title_full_unstemmed | Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal |
| title_short | Quantized thermoelectric Hall effect induces giant power factor in a topological semimetal |
| title_sort | quantized thermoelectric hall effect induces giant power factor in a topological semimetal |
| url | https://hdl.handle.net/1721.1/133318 |
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