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李剛

時間:2018-03-01瀏覽:3885設置

李剛課題組介紹


課題組長
李剛,助理教授、研究員
通訊地址:上海市浦東新區華夏中路393號物質學院5號樓303G
電子郵件:ligang@shanghaitech.edu.cn 
2009年畢業于德國波恩大學(Bonn University),獲得凝聚態理論物理專業博士學位(導師:Prof. Hartmut Monien);后在德國Wuerzburg大學擔任Werner Hanke教授的博士后研究助理,指導博士生兩名。后與Giorgio Sangiovanni教授共同擔任德國國家重點研究項目SFB 1170 ToCoTronics中的co-PI。2015年起在維也納技術大學Karsten Held教授課題組中擔任subgroup leader,指導博士生兩名。于2017年1月起全職在上科大擔任助理教授,獨立研究員(PI)。 李剛博士近年的研究工作主要發表在Nature Communications, Phys. Rev. Lett., Scientific Report,Phys. Rev. B等SCI期刊上,部分工作被綜合媒體報道,并被同行驗證。

研究興趣

新奇量子材料理論與模擬課題組主要研究由電子、自旋、自旋-軌道耦合及多粒子集體激發行為所導致的新奇量子現象。通過理論計算與模擬,我們希望能夠找到復雜現象背后簡單而深邃的物理機制,進而從理論上預言更多、性能更加優異的量子材料,同時為更有效的理解實驗上觀察到的物理現象提供有力的理論支持。


課題組的主要研究方向包括:

1.電子強關聯效應導致的自發對稱破缺、金屬-絕緣體相變、非傳統磁性等物理現象和材料;

由電子庫侖相互作用引發的金屬-絕緣體相變是凝聚態物理學中的一個重要概念。課題組結合第一性原理和動力學平均場(包括動力學平均場的多種非局域擴展方法)重點研究強關聯材料的電子和磁性性質。歡迎對電子強關聯材料理論研究感興趣的同學報考課題組。


2.由自旋-軌道耦合,對稱性保護導致的非平庸能帶兼并和反轉,以及由此產生的拓撲絕緣體,DiracWeyl半金屬等新型量子材料。

      量子拓撲材料是超越傳統金屬-絕緣體分類的一種新的物質狀態。這一類材料的體態有和絕緣體類似的性質,電子的費米面位于導帶和價帶中間。但在它們的表面/邊界上存在特殊的量子態,允許電子通過這些態穿過費米面。量子拓撲材料的研究是物理學近年來的重要科學前沿之一。課題組結合第一性原理計算方法和能帶拓撲分析,以預言新材料和解釋實驗為主要研究目標,近年來在研究二維寬禁帶量子霍爾效應絕緣體,三維拓撲絕緣體和Dirac半金屬上取得了一系列成果。歡迎對拓撲量子態和第一性原理計算感興趣的同學報考課題組。


3.量子多體理論的研究與擴展。



準確描述電子強關聯材料是凝聚態理論物理的一個難點,發展高效準確的量子多體方法一直是凝聚態理論領域中的研究熱點。課題組在多個不同的量子多體方法上均有深入研究,利用費曼圖微擾展開發展出了一套能夠同時描述電子局域相互作用和非局域漲落的理論方法。目前課題組已經開發的量子多體程序庫中包括:動力學平均場(DMFT),動力學團簇方法(dynamical cluster approach),實空間團簇動力學平均場(cluster DMFT),對偶費米子方法(dual-fermion),parquet方法;連續時間蒙特卡洛(including both hybridization-expansion and interaction-expansion flavors)。歡迎對量子多體方法和數值模擬感興趣的同學報考課題組。



課題組開發程序包

課題組動態


【交流訪問】2017年7月1日-5日, UC San Diego教授Congjun Wu訪問課題組,報告題目“Unconventional magnetism and spontaneous spin-orbit ordering”
【交流訪問】2017年6月15日-16日,南京大學萬賢剛教授訪問課題組,報告題目“5d過渡金屬氧化物奇異特性研究”


【交流訪問】史武軍目前在德國德累斯頓馬普所訪問

【春季學?!肯脑朴朴茖⒂?span lang="EN-US">3月25-49日在德國Juelich參加拓撲學春季學校培訓

【交流訪問】維也納技術大學的博士生Petra Pudleiner將于47日起開始在我課題組交流訪問半年

發表文章

PUBLICATIONS

5 most important papers

  1. F. Reis*, G. Li*, L. Dudy, M. Bauernfeind, S. Glass, W. Hanke, R. Thomale, J. Schaefer, R. Claessen, Bismuthene on a SiC substrate: A candidate for a high-temperature quantum spin Hall material, Science 357, 8142 (2017)

  2. G. Li, P. Hoepfner, J. Schaefer, R. Claessen, W. Hanke, Magnetic order in a frustrated two-dimensional atom lattice at a semiconductor surface. Nat. Commun. 4, 2617 (2013)

  3. L. Peng, Y. Yuan, G. Li#, X. Yang, J.J. Xian, C.J. Yi, Y.G. Shi, Y.S. Fu#, Observation of topological states residing at step edges of WTe2, Nat. Commun. 8, 41467 (2017)

  4. G. Li#, Hidden physics in the dual-fermion approach: A special case of a nonlocal expansion, Phys. Rev. B 91, 165134 (2015)

  5. L. Si, O. Janson, G. Li#, Z. Zhong, Z.L. Liao, G. Koster, K. Held#, Quantum anomalous Hall states in ferromagnetic SrRuO3(111) Bilayers, Phys. Rev. Lett. 119, 026402 (2017)


Full list of publications


Publication in 2019

  1. Petra Pudleiner, Anna Kauch, Karsten Held* and Gang Li*, Competition between antiferromagnetic and charge density wave fluctuations in the extended Hubbard model. Phys. Rev. B 100, 075108 (2019)

  2. Jiaxin Zhang, Xiaochan Cai, Wie Xia, Aiji Liang, Junwei Huang, Chengwei Wang, Lexian Yang, Hongtao Yuan, Yulin Chen, Shilei Zhang, Yanfeng Guo*, Zhongkai Liu* and Gang Li*,Unveiling Electronic Correlation and the Ferromagnetic Superexchange Mechanism in the van der Waals Crystal CrSiTe3, Phys. Rev. Lett. 123, 047203 (2019)

  3. G. Li*, A. Kauch, P. Pudleiner and K. Held, The victory project v1.0: An efficient parquet equations solver, Comp. Phys. Commun. 03.008(2019), doi.org/10.1016/j.cpc.2019.03.008

  4. Jiajun Zhu, Yunyouyou Xia, Gang Li, Shengqiang Zhou, S. Wimmer, G. Spingholz, A. Pashkin, M. Helm and H. Schneider, Absorption edge, urbach tail, and electron-phonon interactions in topological insulator Bi2Se3 and band insulator (Bi0.89In0.11)2Se3. App. Phys. Lett. 114, 162105 (2019)

  5. M. Ye, T. Xu, G. Li, S. Qian, Y. Takeda, Y. Saitoh, X.-Y. Zhu, M. Nurmamat, K. Sumida, Y. Ishida, S. Shin, and A. Kimura, Negative Te spin polarization responsible for ferromagnetic order in the doped topological insulator V0.04(Sb1?xBix)1.96Te3, Phys. Rev. B 99, 144413 (2019)

  6. P. Pudleiner, P. Thunstrom, A. Valli, A. Kauch, G. Li and K. Held, Parquet approximation for molecules: Spectrum and optical conductivity of the Pariser-Parr-Pople model, Phys. Rev. B 99, 125111 (2019)


Publication in 2018

  1. G. Li*, W. Hanke, E.M. Hankiewicz, F. Reis, J. Schaefer, R. Claessen, C. Wu and R. Thomale, Theoretical paradigm for the quantum spin Hall effect at high temperatures, Phys. Rev. B 98, 165146 (2018)

  2. F. Dominguez, B. Scharf, G. Li, J. Schaefer, R. Claessen, W. Hanke, R. Thomale and E.M. Hankiewicz, Testing topological protection of edge stats in hexagonal quantum spin Hall candidate materials, Phys. Rev. B 98, 161407 (2018)

  3. X. Su, Z. Xue, G. Li* and P. Yu*, Edge State Engineering of Graphene Nanoribbons, Nano Lett. 18, 5744 (2018)

  4. C. Chen, M. Wang, J. Wu, H. Fu, H. YangZ. Tian, T. TuH. PengY. SunX. XuJ. JiangN. B. M. Schr?terY. LiD. PeiS. LiuS. A. EkahanaH. YuanJ. XueG. LiJ. JiaZ. LiuB. YanH. Peng,and Y. Chen,Electronic structures and unusually robust bandgap in an ultrahigh-mobility layered oxide semiconductor, Bi2O2Se, Science Advances 4:eaat8355 (2018)

  5. Y. Shang, G. Li, W. Liu and Z. Ning, Quasi-2D Inorganic CsPbBr3 perovskite for efficient and stable light-emitting diodes, Advanced Functional Materials, 28, 22 (2018)

  6. C. Turner, D. Koumoulis, G. Li, Z. Zujovic, R.E. Taylor, R.B. Kaner, Synthesis and characterization of aluminum diboride products using Al-27, B-11 NMR and n.04-07, ab-initio studies, Journal of Materials Science 53, 3309 (2018)


Publication in 2017

  1. F. Reis*, G. Li*, L. Dudy, M. Bauernfeind, S. Glass, W. Hanke, R. Thomale, J. Schaefer, R. Claessen, Bismuthene on a SiC substrate: A candidate for a high-temperature quantum spin Hall material, Science 357, 8142 (2017)

  2. L. Peng, Y. Yuan, G. Li#, X. Yang, J.J. Xian, C.J. Yi, Y.G. Shi, Y.S. Fu#, Observation of topological states residing at step edges of WTe2, Nat. Commun. 8, 41467 (2017)

  3. L. Si, O. Janson, G. Li#, Z. Zhong, Z.L. Liao, G. Koster, K. Held#, Quantum anomalous Hall states in ferromagnetic SrRuO3(111) Bilayers, Phys. Rev. Lett. 119, 026402 (2017)

  4. C. Platt, G. Li, M. Fink, R. Thomale, Evolution of superconducting gap anisotropy in hole-doped 122 iron pnictides, Physica status solidi B-basic solid state physics 254 (2017)

  5. C.W. Wang, Y.Y.Y. Xia, Z. Tian, J. Jiang, B.H. Li, S.T. Cui, H.F. Yang, A.J. Liang, X.Y. Zhan, G.H. Hong, S. Liu, C. Chen, M.X. Wang, L.X. Yang, Z. Liu, Q.X. Mi, G. Li, J.M. Xue, Z.K. Liu, Y.L. Chen, Photoemission study of the electronic structure of valence band convergent SnSe, Phys. Rev. B 96, 165118 (2017)

  6. G. Li*#, B.H. Yan, Z.J. Wang, K. Held, Topological Dirac semimetal phase in Pd and Pt oxides, Phys. Rev. B 95, 035102 (2017)

  7. Y.W. Li, Y.Y.Y. Xia, S.A. Ekahana, N. Kumar, J. Jiang, L.X. Yang, C. Chen, C.X. Liu, B.H. Yan, C. Felser, G. Li, Z.K. Liu, Y.L. Chen, Topological origin of the type-II Dirac fermions in PtSe2, Phys. Rev. Mat. 7, 074202 (2017)

  8. Y.Y.Y. Xia, G. Li#,Triply degenerate nodal points and topological phase transitions in NaCu3Te2, Phys. Rev. B 96, 241204 (2017)


Publication before 2017

  1. S. Glass, F. Reis, M. Bauernfeind, J. Aulbach, M.R. Scholz, F. Adler, L. Dudy, G. Li, R. Claessen, J. Schaefer, Atomic-scale mapping of layer-by-layer hydrogen etching and passivation of SiC(0001) substrates, J. Phys. Chem. C 120, 10361 (2016)

  2. G. Li*#, N. Wentzell, P. Pudleiner, K. Held, Efficient implementation of the parquet equations: Role of the reducible vertex function and its kernel approximation, Phys. Rev. B 93, 165103 (2016)

  3. P. Pudleiner, T. Schafer, D. Rost, G. Li, K. Held, N. Blumer, Momentum structure of the self-energy and its parameterization for the two-dimensional Hubbard model, Phys. Rev. B 93, 195134 (2016)

  4. G. Li#, W. Hanke, G. Sangiovanni, B. Tauzettel, Interacting weak topological insulators and their transition to Dirac semimetal phases, Phys. Rev. B 92, 235149 (2016)

  5. G. Li#, Hidden physics in the dual-fermion approach: A special case of a nonlocal expansion, Phys. Rev. B 91, 165134 (2015)

  6. X. Zhang, W. Wu, G. Li, Q. Sun, A.C. Ji, Phase diagram of interacting Fermi gas in spin-orbit coupled squared lattice, New J. Phys. 17, 073036 (2015)

  7. M. Laubach, R. Thomale, C. Platt, W. Hanke, G. Li#, Phase diagram of the Hubbard model on the anisotropic triangular lattice, Phys. Rev. B 91, 245125 (2015)

  8. G. Li*#, B.H. Yan, R. Thomale, W. Hanke, Topological nature and the multiple Dirac cones hidden in Bismuth high-Tc superconductor, Sci. Rep. 5,10435 (2015)

  9. S. Glass, G. Li, F. Adler, J. Aulbach, A. Fleszar, R. Thomale, W. Hanke, R. Claessen, J. Schaefer#, Triangular spin-orbit-coupled lattice with strong coulomb correlations: Sn atoms on a SiC(0001) substrate, Phys. Rev. Lett. 115, 247602 (2015)

  10. G. Li*#, A. Antipov, A. Rubtsov, S. Kirchner, W. Hanke, Competing phases of the Hubbard model on a triangular lattice: Insights from the entropy, Phys. Rev. B 89, 161118(2014)

  11. A. Barfuss, L. Dudy, M.R. Scholtz, M.R. Scholz, H. Roth, P. Hoepfner, C. Blumenstein, G. Landolt, J.H. Dil, N.C. Plumb, M. Radovic, A. Bostwick, E. Rotenberg, A. Fleszar, G. Bihlmayer, D. Wortmann, G. Li, W. Hanke, R. Claessen, J. Schaefer, Elemental topological insulator with tunable Fermi level: strained alpha-Sn on InSb(001), Phys. Rev. Lett. 111, 157205 (2013)

  12. G. Li, P. Hoepfner, J. Schaefer, R. Claessen, W. Hanke, Magnetic order in a frustrated two-dimensional atom lattice at a semiconductor surface. Nat. Commun. 4, 2617 (2013)

  13. G. Li, W. Hanke, Efficient treatment of the high-frequency tail of the self-energy function and its relevance for multiorbital models, Phys. Rev. B 85, 115103 (2012)

  14. J.C. Budich, R. Thomale, G. Li, M. Laubach, S.C. Zhang, Fluctuation-induced topological quantum phase transitions in quantum spin-Hall and anomalous-Hall insulators, Phys. Rev. B 86, 201407 (2012)

  15. G. Li*#, M. Laubach, A. Fleszar, W. Hanke, Geometrical frustration and the competing phases of the Sn/Si(111) root 3 x root 3 R30 degress surface systems. Phys. Rev. B 83, 041104 (2011)

  16. G. Li#, W. Hanke, A.N. Rubtsov, S. Baese, M. Potthoff, Accessing thermodynamics from dynamical cluster-embedding approaches. Phys. Rev. B 80, 195118 (2009)

  17. H. Hafermann, G. Li, A.N. Rubtsov, M.I. Katsnelson, A.I. Lichtenstein, H. Monien, Efficient perturbation theory for quantum lattice model. Phys. Rev. Lett. 102, 206401 (2008)

  18. G. Li, H. Lee, H. Monien, Determination of the lattice susceptibility within the dual fermion method, Phys. Rev. B. 78, 195105 (2008)

  19. H. Lee, G. Li, H. Monien, Hubbard model on the triangular lattice using dynamical cluster approximation and dual fermion methods. Phys. Rev. B 78, 205117 (2008)

  20. G. Li, G.S. Tian, Ferromagnetism in an itinerant electron cluster, Commun. Theore. Phys. 44, 188 (2005)


本組成員

Petra Pudleiner

量子多體理論

郵箱:pudleiner@ifp.tuwien.ac.at

史武軍

拓撲材料計算

郵箱:shiwujun@shanghaitech.edu.cn

夏云悠悠

拓撲材料計算

郵箱:xiayyy@shanghaitech.edu.cn


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