李偉立 / 副研究員

pi_image

連絡資訊

學歷

  • 美國普林斯頓大學物理博士
  • 臺灣大學物理學士

秘書

李馥芳 / 886-2-2789-8985

研究興趣

新穎物質之傳輸特性 ; 強作用電子系統 ; 薄石墨片元件 ; 磁性奈米結構之自旋傳輸特性 ; 自旋電子元件 ;

經歷

  • 美國約翰霍普金斯大學 博士後研究

學術著作

期刊論文

  • [1]     Ting-Hui Chen, Hsiang-Hsi Kung, Chang-Ran Wang, Chia-Tso Hsieh, and Wei-Li Lee*, 2017, “Evidence for enhanced phase fluctuations in nanostructured niobium thin films”, PHYSICAL REVIEW B, Rapid Communications 96, 020506(R). (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [2]     Wei-Hao Hsu, Wei-Tse Chang, Chun-Yueh Lin, Mu-Tung Chang, Chia-Tso Hsieh, Chang-Ran Wang, Wei-Li Lee, Ing-Shouh Hwang*, 2017, “Low-energy electron point projection microscopy/diffraction study of suspended graphene”, APPLIED SURFACE SCIENCE, 423, 266-274. (SCI) (IF: 3.15; SCI ranking: 18.6%,5.6%,25.4%,34%)

  • [3]     M.S. Tsai, C.S. Li, S.T. Guo, M.Y. Song, A. K. Singh*, M.-W. Chu and W.L. Lee*, 2017, “Off-stoichiometry driven carrier density variation at the interface of LaAlO3/SrTiO3”, SCIENTIFIC REPORTS, 7,1770. (SCI) (IF: 5.228; SCI ranking: 11.1%)

  • [4]     V. Lee, C.H. Wu, Z.X. Lou, W.L. Lee, and C.W. Chang*, 2017, “Divergent and ultrahigh thermal conductivity in millimeter-long nanotubes”, PHYSICAL REVIEW LETTERS, 118, 135901 (Editors' suggestion). (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [5]     R. Sankar, G.N. Rao, I.P. Muthuselvam, T.R. Chang, H.T. Jeng, G.S. Murugan, W.L. Lee, and F.C. Chou, 2017, “Anisotropic superconducting property studies of single crystal PbTaSe2”, JOURNAL OF PHYSICS-CONDENSED MATTER, 29, 095601. (SCI) (IF: 2.209; SCI ranking: 41.8%)

  • [6]     R. Sankar, G.N. Rao, I.P. Muthuselvam, C. Butler, N. Kumar, G.S. Murugan, C. Shekhar, T.R. Chang, C.Y. Wen, C.W. Chen, W.L. Lee, M.-T. Lin, H.T. Jeng, C. Felser, and F.C. Chou, 2016, “Polymorphic layered MoTe2 from semiconductor, topological insulator, to Weyl semimetal”, CHEMISTRY OF MATERIALS, 29, 699-707. (SCI) (IF: 9.407; SCI ranking: 6.9%,5.5%)

  • [7]     Pin-Yi Li, Yang Tsao, Yun-Ju Liu, Zong-Xing Lou, Wei-Li Lee, Shi-Wei Chu, and Chih-Wei Chang, 2016, “Unusual imaging properties of superresolution microspheres”, OPTICS EXPRESS, 24, 16479. (SCI) (IF: 3.148; SCI ranking: 15.6%)

  • [8]     Shih-Ting Guo, R. Sankar, Yung-Yu Chien, Tay-Rong Chang, Horng-Tay Jeng, Guang-Yu Guo, F. C. Chou, and Wei-Li Lee*, 2016, “Large transverse Hall-like signal in topological Dirac semimetal Cd3As2”, Scientific reports, 6, 27487. (SCI) (IF: 5.228; SCI ranking: 11.1%)

  • [9]     Yung-Yu Chien, Hongtao Yuan, Chang-Ran Wang, and Wei-Li Lee*, 2016, “Thermoelectric Power in Bilayer Graphene Device with Ionic Liquid Gating”, Scientific reports, 6, 20402. (SCI) (IF: 5.228; SCI ranking: 11.1%)

  • [10]     Wei-Li Lee,2016,〈拓撲材料新世界〉,《物理雙月刊》,第38卷第一期,頁63-68。

  • [11]     X. Kou, L. Pan, J. Wang, Y. Fan, E.S. Choi, W.L. Lee, T. Nie, K. Murata, Q. Shao, S.C. Zhang, and K.L. Wang*, 2015, “Metal-to-insulator switching in quantum anomalous Hall states”, Nature Communications, 6, 8474. (SCI) (IF: 11.329; SCI ranking: 4.8%)

  • [12]     R. Sankar, M. Neupane, S.-Y. Xu, C.J. Butler, I. Zeljkovic, I.P. Muthuselvam, F.-T. Huang, S.-T. Guo, S.K. Karna, M.-W. Chu, W.L. Lee, M.-T. Lin, R. Jayavel, V. Madhavan, M.Z. Hasan, and F.C. Chou*, 2015, “Large single crystal growth, transport property, and spectroscopic characterizations of three-dimensional Dirac semimetal Cd3As2”, Scientific reports, 5, 12966. (SCI) (IF: 5.228; SCI ranking: 11.1%)

  • [13]     I.P. Muthuselvam, R. Sankar, V.N. Singh, G.N. Rao, W.L. Lee, G.Y. Guo* and F.C. Chou*, 2015, “Magnetic Orderings in Li2Cu(WO4)2 with Tungstate-Bridged Quasi-1D Spin-1/2 Chains”, INORGANIC CHEMISTRY, 54, 4303. (SCI) (IF: 4.82; SCI ranking: 8.7%)

  • [14]     Xufeng Kou, Shih-Ting Guo, Yabin Fan, Lei Pan, Murong Lang, Ying Jiang, Qiming Shao, Tianxiao Nie, Koichi Murata, Jianshi Tang, Yong Wang, Liang He, Ting-Kuo Lee, Wei-Li Lee*, and Kang L. Wang* , 2014, “Scale-Invariant Quantum Anomalous Hall Effect in Magnetic Topological Insulators beyond the Two-Dimensional Limit”, PHYSICAL REVIEW LETTERS, 113, 137201. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [15]     R. Sankar, I. Panneer Muthuselvam, Christopher John Butler, S.-C. Liou, B. H Chen, M.-W. Chu, W. L. Lee, Minn-Tsong Lin, R.Jayavel, and F. C. Chou*, 2014, “Room temperature agglomeration for the growth of BiTeI single crystal with giant Rashba effect”, CRYSTENGCOMM, 16, 8678. (SCI) (IF: 3.849; SCI ranking: 23.3%,19.2%)

  • [16]     P.Y. Chen, H.H. Hsiao, C.I. Ho, C.C. Ho, W.L. Lee*, H.H. Chang, S.C. Lee, J.Z. Chen, and I-C. Cheng*, 2014, “ Periodic anti-ring back reflectors for hydrogenated amorphous silicon thin-film solar cells ”, OPTICS EXPRESS, 22, A1128-A1136. (SCI) (IF: 3.148; SCI ranking: 15.6%)

  • [17]     J.W. Chen*, G. Narsinga Rao, H.M. Lee, W.L. Lee, and F.C. Chou , 2014, “Dielectric properties of the spin-1/2 dimer compounds Ba3Cr2O8 and Sr3Cr2O8 ”, MATERIALS CHEMISTRY AND PHYSICS, 145, 461-464. (SCI) (IF: 2.101; SCI ranking: 35.8%)

  • [18]     Wei-Hsiang Lin, Ting-Hui Chen, Jan-Kai Chang, Jieh-I Taur, Yuan-Yen Lo, Wei-Li Lee, Chia-Seng Chang, Wei-Bin Su, and Chih-I Wu* , 2014, “A Direct and Polymer-Free Method for Transferring Graphene Grown by Chemical Vapor Deposition to Any Substrate”, ACS Nano, 8, 1784-1791. (SCI) (IF: 13.334; SCI ranking: 4.9%,3.3%,4.8%,4.2%)

  • [19]     H. C. Hsu, W. L. Lee, J. Y. Lin, B. L. Young, H. H. Kung, J. Huang, and F. C. Chou* , 2014, “Spin-Glass Transition and Giant Paramagnetism in Heavily Hole-Doped Bi2Sr2Co2Oy”, Journal of the Physical Society of Japan, 83, 024709. (SCI) (IF: 1.559; SCI ranking: 39.2%)

  • [20]     C.R. Wang, J.C. Tung, R. Sankar, C.T. Hsieh, Y.Y. Chien, G.Y. Guo*, F. C. Chou, and W.L. Lee*, 2013, “Magneto-transport in copper-doped noncentrosymmetric BiTeI”, PHYSICAL REVIEW B, Rapid Communications 88, 081104(R). (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [21]     F.-T. Huang, M.-W. Chu, H. H. Kung, W. L. Lee, R. Sankar, S.-C. Liou, K. K. Wu, Y. K. Kuo, and F. C. Chou*, 2012, “Nonstoichiometric doping and Bi antisite defect in single crystal Bi2Se3”, PHYSICAL REVIEW B, 86, 081104(R), Rapid Communications (Editors' Suggestions). (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [22]     H. C. Hsu, W. L. Lee, K. K. Wu, Y. K. Kuo, B. H. Chen, and F. C. Chou*, 2012, “Enhanced thermoelectric figure-of-merit ZT for hole-doped Bi2Sr2Co2Oy”, JOURNAL OF APPLIED PHYSICS, 111, 103709. (SCI) (IF: 2.101; SCI ranking: 32.4%)

  • [23]     T. Y. Ou-Yang, F.-T. Huang, G. J. Shu, W. L. Lee, M.-W. Chu, H. L. Liu, and F. C. Chou*, 2012, “Electronic phase diagram of LixCoO2 revisited with potentiostatically deintercalated single crystals”, PHYSICAL REVIEW B, 85, 035120. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [24]     H-A Chin, I-C Cheng*, C-K Li, Y-R Wu, J Z Chen, W-S Lu and W-L Lee, 2011, “Electrical properties of modulation-doped rf-sputtered polycrystalline MgZnO/ZnO heterostructures ”, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 44, 455101. (SCI) (IF: 2.772; SCI ranking: 21.4%)

  • [25]     Chang-Ran Wang, Wen-Sen Lu, Lei Hao, Wei-Li Lee*, Ting-Kuo Lee, Feng Lin, I-Chun Cheng, and Jian-Zhang Chen, 2011, “Enhanced Thermoelectric Power in Dual-Gated Bilayer Graphene”, PHYSICAL REVIEW LETTERS, 107, 186602. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [26]     Kun-Yang Wu, Yu-Tai Tao*, Chi-Chih Ho, Wei-Li Lee*, and Tsong-Pyng Perng, 2011, “High-performance space-charge-limited transistors with well-ordered nanoporous aluminum base electrode”, APPLIED PHYSICS LETTERS, 99, 093306. (SCI) (IF: 3.142; SCI ranking: 19.3%)

  • [27]     李偉立, 2011, “碳奈米結構的美”, 科學發展, 462, 54.

  • [28]     C. C. Lee, W. L. Lee, J. -Y. Lin, C. C. Tsuei, J. G. Lin, and F. C. Chou* , 2011, “Superconducting to spin-glass state transformation in β-pyrochlore KxOs2O6”, PHYSICAL REVIEW B, 83, 104503. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [29]     Chi-Chih Ho, Po-Yuan Chen, Keng-hui Lin, Wen-Tau Juan* and Wei-Li Lee*, 2011, “Fabrication of Monolayer of Polymer/Nanospheres Hybrid at a Water-Air Interface”, ACS Applied Materials & Interfaces, 3, 204. (SCI) (IF: 7.145; SCI ranking: 16.9%,9.2%)

  • [30]     李偉立,2010,〈挑戰不可能的任務─製備石墨超級薄片〉,《科學月刊》,492,902-909。

  • [31]     H. C. Hsu, J.-Y. Lin, W. L. Lee, M.-W. Chu, T. Imai, Y. J. Kao, C. D. Hu, H. L. Liu, and F. C. Chou*, 2010, “Nonmagnetic impurity perturbation to the quasi-two-dimensional quantum helimagnet LiCu2O2”, PHYSICAL REVIEW B, 82, 094450. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [32]     C.R. Wang, W.S. Lu and W.L. Lee*, 2010, “Transverse Thermoelectric Conductivity of Bilayer Graphene in Quantum Hall Regime”, PHYSICAL REVIEW B, Rapid Communications 82, 121406(R). (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [33]     Huai-An Chin, I-Chun Cheng*, Chih-I Huang, Yuh-Renn Wu, Wen-Sen Lu, Wei-Li Lee, Jian Z. Chen*, Kuo-Chuang Chiu, and Tzer-Shen Lin , 2010, “Two dimensional electron gases in polycrystalline MgZnO/ZnO heterostructures grown by rf-sputtering process”, JOURNAL OF APPLIED PHYSICS, 108, 054503. (SCI) (IF: 2.101; SCI ranking: 32.4%)

  • [34]     G. J. Shu, W. L. Lee, F.-T. Huang, M.-W. Chu, Patrick A. Lee, and F. C. Chou, 2010, “Oxygen nonstoichiometry and the origin of Na ion ordering in P2-NaxCoO2 ”, PHYSICAL REVIEW B, 82, 054106. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [35]      H.C. Hsu, W.L. Lee, J.Y. Lin, H.L. Liu, and F.C. Chou*, 2010, “Disrupted long-range spin-spiral ordering and electric polarization in the Zn-substituted quantum helimagnet LiCu_(2-x)Zn_xO_2”, PHYSICAL REVIEW B, 81, 212407. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [36]     Chi-Chih Ho, Tung-Wu Hsieh, Hsiang-Hsi Kung, Wen-Tau Juan, Keng-Hui Lin, and Wei-Li Lee*, 2010, “Reduced saturation magnetization in cobalt antidot thin films prepared by polyethylene oxide-assisted self-assembly of polystyrene nanospheres”, Applied Physics Letters, 96, 122504. (SCI) (IF: 3.142; SCI ranking: 19.3%)

  • [37]     李偉立,2009,〈異常霍爾效應的新發展〉,《台灣技術協會會訊五十期》,50, 1-8。

  • [38]     F.-T. Huang, G. J. Shu, M.-W. Chu, Y. K. Kuo, W. L. Lee, H. S. Sheu, and F. C. Chou*, 2009, “Sodium ion ordering of Na0.77CoO2 under competing multivacancy cluster, superlattice, and domain formation”, Physical Review B, 80, 144113. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [39]     J.W.G. Bos , M. Lee, E. Morosan, H.W. Zandbergen, Wei- Li Lee, N.P. Ong, R.J. Cava*, 2006, “Ferromagnetism below 10 K in Mn-doped BiTe”, Physical Review B, 74, 184429. (SCI) (IF: 3.718; SCI ranking: 23.9%)

  • [40]     Wei- Li Lee*, Frank Q. Zhu, and C. L. Chien, 2006, “Determination of domain walls resistance in a cobalt thin film by thickness modulation”, Applied Physics Letters, 88, 122503. (SCI) (IF: 3.142; SCI ranking: 19.3%)

  • [41]     M. L. Foo*, Q. Huang, J. W. Lynn, Wei- Li Lee, Tomasz Klimczuka, I. S. Hagemanna, N. P. Ong and R. J. Cava, 2006, “Synthesis, structure and physical properties of Ru ferrites: BaMRu5O11 (M=Li and Cu) and BaM'2Ru4O11 (M’=Mn, Fe and Co)”, Journal of Solid State Chemistry, 179, 563. (SCI) (IF: 2.265; SCI ranking: 50%,37%)

  • [42]     V. L. Miller*, Wei- Li Lee, G. Lawes, N. P. Ong, R. J. Cava, 2005, “Synthesis and properties of the Co7Se8-xSx and Ni7Se8-xSx solid solutions”, Journal of Solid State Chemistry, 178, 1508. (SCI) (IF: 2.265; SCI ranking: 50%,37%)

  • [43]     J.I. Lai*, KVPM Shafi , A. Ulman, K. Loos, Y.J. Lee, T. Vogt, Wei- Li Lee, NP Ong, 2005, “Controlling the size of magnetic nanoparticles using pluronic block copolymer surfactants”, Journal of Physical Chemistry B, 109, 15. (SCI) (IF: 3.187; SCI ranking: 33.3%)

  • [44]     Wei- Li Lee, Satoshi Watauchi, V. L. Miller, R. J. Cava, and N. P. Ong*, 2004, “Anomalous-Hall heat current and Nernst effect in the ferromagnetic CuCr2Se4-xBrx”, Physical Review Letters, 93, 226601. (SCI) (IF: 7.645; SCI ranking: 7.6%)

  • [45]     M. L. Foo*, Wei- Li Lee, T Siegrist, G Lawes, A. P. Ramirez, N. P. Ong, and R. J. Cava, 2004, “Electronic characterization of alkali ruthenium hollandites: KRu4O8, RbRu4O8 and Cs0.8Li0.2Ru4O8”, Materials Research Bulletin, 39, 1663. (SCI) (IF: 2.435; SCI ranking: 27.3%)

  • [46]     T. Klimczuk*, Wei- Li Lee, H. W. Zandbergen, and R. J. Cava, 2004, “Synthesis and magnetic properties of (Ba; Bi)1.54Rh8O16 hollandite”, Materials Research Bulletin, 39, 1671. (SCI) (IF: 2.435; SCI ranking: 27.3%)

  • [47]     R. E. Schaak*, M. Avdeev, Wei- Li Lee, G. Lawes, H. W. Zandbergen, J. D. Jorgensen, N. P. Ong, A. P. Ramirez, and R. J. Cava, 2004, “Formation of transition metal boride and carbide perovskites related to superconducting MgCNi3”, Journal of Solid State Chemistry, 177, 1244. (SCI) (IF: 2.265; SCI ranking: 50%,37%)

  • [48]     Wei- Li Lee, Satoshi Watauchi, V. L. Miller, R. J. Cava, and N. P. Ong*, 2004, “Dissipationless anomalous Hall current in the ferromagnetic spinel CuCr2Se4-xBrx”, Science, 303, 1647. (SCI) (IF: 34.661; SCI ranking: 3.2%)

  • [49]     Wei- Li Lee, M. K. Hass, G. Lawes, A. P. Ramirez, R. J. Cava, and N. P. Ong*, 2003, “Field tuning of the electron and hole populations in the ruthenate Bi3Ru3O11”, Europhysics Letters, 63, 860. (SCI) (IF: 1.963; SCI ranking: 24.1%)

學術會議(研討會)論文

  • [1]     C.S. Li, A.K. Singh, M.Y. Song*, and W.L. Lee*, 2017, “Spin-orbit coupled superconductivity at the interface of LaAlO3/SrTiO3 (invited paper)”, 7 pages, paper presented at SPIE Photonics West 2017, San Francisco: SPIE Europe, 2017-01-28 ~ 2017-02-01.

專書

專書著作

主編之專書

專書內之論文

  • [1]     N. P. Ong and Wei-Li Lee, 2006, “Geometry and the Anomalous Hall Effect In Ferromagnets”, editor(s): Sachio Ishioka and Kazuo Fujikawa, Proceedings of the 8th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (ISQM-Tokyo’05), pp. 121, Singapore: World Scientific.

技術報告

其他論文

獎項及殊榮

(1) 國內學術研究獎項 2012, 2013, 2014, 2015, 2016 中央研究院前瞻計畫獎助 ( Academia Sinica Career Development Award )

發現與突破

(1) 西元年:2014
研究人員(中):李偉立
研究人員(英):LEE, WEI-LI, Xufeng Kou, Shih-Ting Guo, Yabin Fan, Lei Pan, Murong Lang, Ying Jiang, Qiming Shao, Tianxiao Nie, Koichi Murata, Jianshi Tang, Yong Wang, Liang He, Ting-Kuo Lee, and Kang L. Wang
研究成果名稱(中):量子異常霍爾效應首次於大尺度及三維度鐵磁性拓樸絕緣體中獲得實驗證實
研究成果名稱(英):Demonstration of robust quantum anomalous Hall effect (QAHE) in macroscopic and 3D ferromagnetic topological insulator system.
簡要記述(中):異常霍爾效應描述磁性系統 中異常霍爾電阻正比於其磁矩的現象。在一般鐵磁金屬與半導體中,異常霍爾電阻並無單一基本通用的數值(量子化)。然而在鐵磁性拓樸絕緣體中並且無外加磁場條件下,非簡單的本體能帶拓樸所形成的狄拉克錐形表面電子態會產生不同的有效質量區,進而衍生出無耗損的螺旋性邊界傳輸通道,並顯現出獨特的異常霍爾電阻量子化現象。由本所李偉立副研究員、李定國特聘研究員及美國加州大學洛杉磯分校王康隆教授所主導的跨國研究團隊,首次在鐵磁性拓樸絕緣體中進一步實驗證實此效應可擴展至大尺度及三維度的體系。此結果對於無耗損螺旋性邊界傳輸通道運用於降低電子元件能量耗損的可能性,提出正面的支持。完整的實驗結果已發表於物理評論快訊(Physical Review Letters).
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.137201

簡要記述(英):Anomalous Hall effect refers to the phenomenon of linear proportionality between the anomalous Hall resistance and its magnetic moment in a magnetic system. In normal magnetic metal and semiconductor, there is no universal value for the anomalous Hall resistance. Nevertheless, in a ferromagnetic topological insulator (FM TI) under zero external magnetic field, the Dirac surface states, originating from the non-trivial bulk band topology, attain different effective masses on different surfaces. This results in a dissipationless chiral edge channel forming at the Dirac fermion mass domain-wall and gives rise to the quantization of the anomalous Hall resistance. In a recent international collaborating work led by Dr. Wei-Li Lee, Dr. Ting-Kuo Lee at IoP and Prof. K.L. Wang at UCLA USA, this effect was further demonstrated in a macroscopic and 3D FM TI. This may provide a new direction for resolving the heat dissipation problem in electronics using dissipationless chiral edge channel in a topological material. Detailed experimental results have been recently published in Physical Review Letters.
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.137201

主要相關著作:
Xufeng Kou, Shih-Ting Guo, Yabin Fan, Lei Pan, Murong Lang, Ying Jiang, Qiming Shao, Tianxiao Nie, Koichi Murata, Jianshi Tang, Yong Wang, Liang He, Ting-Kuo Lee, Wei-Li Lee*, and Kang L. Wang* , 2014, “Scale-Invariant Quantum Anomalous Hall Effect in Magnetic Topological Insulators beyond the Two-Dimensional Limit”, PHYSICAL REVIEW LETTERS, 113, 137201. (SCI) (IF: 7.645; SCI ranking: 7.6%)
(2) 西元年:2011
研究人員(中):李偉立、王昶然、呂文森、郝雷、李定國、林鋒、陳亦君、陳建彰
研究人員(英):LEE, WEI-LI, Chang-Ran Wang, Wen-Sen Lu, Lei Hao, Ting-Kuo Lee, Feng Lin, I-Chun Cheng, and Jian-Zhang Chen
研究成果名稱(中):首次於雙層石墨烯元件中驗證“場效熱電效應”
研究成果名稱(英):First demonstration of the “field-effect thermoelectricity” in a bilayer graphene device
簡要記述(中):本所李偉立助研究員與李定國特聘研究員所主導的雙柵極雙層石墨烯(dual-gated bilayer graphene)元件研究計畫中,首次實驗驗證“場效熱電效應”。當外加一垂直電場(D)於雙原子層石墨片時,並且在載子濃度約略相同的條件下,其熱電能(thermopower)仍最多可被放大四倍以上,已超越一些知名的低溫熱電材料。此現象的核心物理機制源於電場衍生之反對稱性破壞 (inversion symmetry breaking)造成了能隙(band gap)的產生,進而增加能帶曲率(band curvature)。此外,熱電能的極性(polarity)亦可簡單運用柵極電壓(gate voltage)來調控成為電子型或電洞型。此研究成果為熱電相關研究領域提供一個全新的思考方向,完整的結果資料已發表於物理評論通訊(Physical Review Letters 107, 186602 (2011))。
簡要記述(英):In a research project on dual-gated bilayer graphene devices led by Dr. Wei-Li Lee and Dr. Ting-Kuo Lee, the “field-effect thermoelectricity” has been demonstrated for the first time. When applying a perpendicular electric field (D) on a bilayer graphene, the thermoelectric power (TEP) can be amplified more than 4 folds while the carrier density remains the same. The value of TEP is comparable to or exceeding several known low temperature thermoelectric materials. The physical mechanism is rooted in the band-gap opening due to the inversion symmetry breaking by D, which largely increases the band curvature near the band edges. On the other hand, its polarity can be readily tuned by the gate voltage to be either electron-type or hole-type. Our results open up a new possibility in thermoelectric application using graphene-based device. Complete data and analysis have been published in Physical Review Letters (PRL 107, 186602 (2011)).
主要相關著作:
Chang-Ran Wang, Wen-Sen Lu, Lei Hao, Wei-Li Lee*, Ting-Kuo Lee, Feng Lin, I-Chun Cheng, and Jian-Zhang Chen, 2011, “Enhanced Thermoelectric Power in Dual-Gated Bilayer Graphene”, PHYSICAL REVIEW LETTERS, 107, 186602. (SCI) (IF: 7.645; SCI ranking: 7.6%)
個人資料維護 | 著作目錄維護同步更新 | 最後更新日期 : 2017-10-04
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