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NAME |
Lihua Ww
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| BIRTH DATE |
Nov, 1988 |
| TITLE/POSITION |
Associate Professor |
| PHONE |
+86-21-66135995 |
| EMAIL |
lihuaw@shu.edu.cn
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| Education |
Ph. D., Shanghai Institute of Ceramics, Chinese Academy of Sciences, Advisor: Prof. Wenqing Zhang
Visiting Student, University of Washington, Advisor: Prof. Jihui Yang
B.S., Materials Physics, Nanjing University
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| Research Interests |
Lihua Wu is an associate professor in MGI. He is interested in thermoelectric properties in Rashba spin-split systems. The Rashba effect is interesting for thermoelectrics because of the spin-splitting band structure. The dimensionality in density of states is reduced due to the unique Fermi topology. By using bulk BiTeI as an example, we theoretically and experimentally demonstrate that the quantum wells and bulk materials with the Rashba effect have a one- and two-dimensional-like thermopower, respectively. The thermopower is much higher as compared with that in spin-degenerate systems, because of the lower Fermi level at given carrier concentrations. A simple but direct relationship between the thermopower and the Rashba parameter is established for quantum wells and bulk materials. Meanwhile, the internal electric field in the Rashba system may lead to the lattice anharmonicity and low lattice thermal conductivity. We suggest that quantum wells and bulk materials with large Rashba effect may become potential candidates for high-performance thermoelectric applications. |
| Significant Recognition |
Outstanding Graduate of University of Chinese Academy of Sciences (2015)
Outstanding Graduate of Beijing (2015)
Sponsorship of China Scholarship Council (2013 |
| Significant Professional Service |
Reviewer for Journal of Electronic Materials |
| Selected Publications |
[1] Lihua Wu, Xin Li, Shanyu Wang, Tiansong Zhang, Jiong Yang, Wenqing Zhang, Lidong Chen and Jihui Yang, Resonant level-induced high thermoelectric response in indium-doped GeTe, NPG Asia Materials, 2017, 9: e343.
[2] Yu Zhang, Lihua Wu*, Jiye Zhang, Juanjuan Xing, Jun Luo*, Eutectic microstructures and thermoelectric properties of MnTe-rich precipitates hardened PbTe, Acta Materialia, 2016, 111: 202-209.
[3] Lihua Wu, Jiong Yang, Tiansong Zhang, Shanyu Wang, Ping Wei, Wenqing Zhang*, Lidong Chen, Jihui Yang*, Enhanced thermoelectric performance in the Rashba semiconductor BiTeI through band gap engineering, Journal of Physics: Condensed Matter, 2016, 28: 085801.
[4] Lihua Wu, Jiong Yang, Shanyu Wang, Ping Wei, Jihui Yang*, Wenqing Zhang*, Lidong Chen, Two-dimensional thermoelectrics with Rashba spin-split bands in bulk BiTeI, Physical Review B, 2014, 90: 195210.
[5] Lihua Wu, Jiong Yang, Shanyu Wang, Ping Wei, Jihui Yang*, Wenqing Zhang*, Lidong Chen, Thermopower enhancement in quantum wells with the Rashba effect, Applied Physics Letters, 2014, 105: 202115.
[6] Lihua Wu, Jiong Yang, Miaofang Chi, Shanyu Wang, Ping Wei, Wenqing Zhang*, Lidong Chen, Jihui Yang*, Enhanced Thermoelectric Performance in Cu-Intercalated BiTeI by Compensation Weakening Induced Mobility Improvement, Scientific Reports, 2015, 5: 14319 |
Website
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http://my.shu.edu.cn/en/lihuaw/ |
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