个人简历

博士后： Department of Physics and Astronomy, Trent University, Canada 香港中文大学物理系 博士和硕士学位：北京师范大学物理学系 学士学位：复旦大学物理系

研究领域

强关联体系是凝聚态物理领域中被大家所公认的一个最为复杂和最具有挑战性的研究领域，它涉及到大量的新奇而有趣的物理现象并具有非常丰富的物理内涵。该领域的理论研究往往与实验研究密切关联，所涉及到的材料主要包括高温铜氧化物超导体（Patrick A Lee, From high temperature superconductivity to quantum spin liquid: progress in strong correlation physics, Rep. Prog. Phys. 71, 012501 (2008)）和铁基超导体（G. R. Stewart, Superconductivity in iorn compounds, Rev. Mod. Phys. 83, 1589 (2011)）等。我们利用数值方法来研究掺杂过程所引入的杂质无序对上述强关联体系的物理性质的影响，并关注由无序所诱导的Anderson金属-绝缘体转变（E. Abrahams, 50 years of Anderson localization, World Scientific, 2010）与强相互作用所导致的Mott金属-绝缘体转变（M. Imada et al., Metal-insulator transitions, Rev. Mod. Phys. 70, 1039 (1998)）如何来共同构建出全景相图等重要的基本物理问题。 在钙钛矿结构过渡族金属氧化物强关联体系中，自旋序、电荷序、轨道序和晶格结构序等的共同作用可以使得体系呈现出许多不同的电子状态和丰富多彩的物理性质（M. B. Salamon and M. Jaime, The physics of manganites: Structure and transport, Rev. Mod. Phys. 73, 583 (2001）），因此近年来人们对轨道自由度能够引起哪些新奇的物理现象非常关注，例如有轨道选择的金属-绝缘体转变（V. I. Anisimov, et al., Eur. Phys. J. B 25, 191 (2002)）和轨道序等。动力学平均场理论（A. Georges, et al., Dynamical mean-field theory of strongly correlated fermion systems and the limit of infinite dimensions, Rev. Mod. Phys. 68, 13 (1996); G. Kotliar, et al., Electronic structure calculations with dynamical mean-field theory, Rev. Mod. Phys. 78, 865 (2006); T. Maier, et al., Quantum cluster theories, Rev. Mod. Phys. 77, 1027 (2005)）是近几年针对强关联体系而发展起来的一套非常成功的数值方法。我们将发展这一方法来研究多能带强关联体系中的巡游磁性和量子相变等问题。 石墨烯（Graphene）材料是近来凝聚态领域备受关注的一个新型材料，石墨烯材料具有严格的二维晶体结构和许多新奇的输运性质，有望成为新一代的半导体材料 （A. H. Castro Neto, et al., The electronic properties of graphene, Rev. Mod. Phys. 81, 109 (2009)）。最近人们发现通过调制栅偏压可以在双层石墨烯中诱导出一个可控的能隙，这是一个很有意义的新发现。我们采用数值方法，并结合实验的最新发现来研究在不同因素（如无序、外部电场和磁场等）的影响下石墨烯材料的输运性质的变化等问题。

近期论文

Yang Liu, Yang-Yang Zhao, and Yun Song, Orbital-selective Mott phase of Cu-substituted iron-based superconductors, New J. Phys 18, 073006 (2016). Jian Sun, Long He, Yang-Yang Zhao, and Yun Song, Disorder driven superconductor-insulator transition in inhomogeneous d-wave superconductor, Sci China-Phys Mech Astron 59, 617401 (2016). Yang Liu, Da-Yong Liu, Jiang-Long Wang, Jian Sun, Yun Song, and Liang-Jian Zou, Localization and orbital selectivity in iron-based superconductors with Cu substitution, Phys. Rev. B 92, 155146 (2015). Long He and Yun Song, Self-consistent calculations of the effects of disorder in d-wave and s-wave superconductors, J. Korean Phys. Soc. 63, 2223 (2013). Yun Song, S. Bulut, R. Wortis, and W. A. Atkinson, Effects of Strong Correlations on the Disorder-Induced Zero-Bias Anomaly in the Extended Anderson-Hubbard Model, J. Phys. Condens. Matter 21, 385601 (2009). Yun Song, R. Wortis and A. W. Atkinson, Dynamical Mean-Field Study of the Two-Dimensional Disordered Hubbard Model, Phys. Rev. B 77, 054202 (2008). Yun Song, R. Wortis, and W. A. Atkinson, Geometrically Averaged Density of States as a Measure of Localization, Phys. Rev. B 76, 045105 (2007). Jian Sun, Yang Liu, and Yun Song, Manipulation of Hund's rule coupling and orbital-selective Mott transition, Acta Phys. Sin. 64, 247101 (2015). Yun Song and Liang-Jian Zou, Two-Orbital Systems with Crystal Field Splitting and Interorbital Hopping, Eur. Phys. J. B 72, 59 (2009). Yun Song and Liang-Jian Zou, Effects of Interorbital Hoping on the orbital fluctuations and mental insulator transitions: Extended Linearized Dynamical Mean-Field Theory, Phys. Rev. B 72, 085114 (2005). Zhouling Jiang and Yun Song, Band gap oscillation and novel transport property in ultrathin chiral graphene nanoribbons, Physica B 464, 61 (2015). Changan Li, Hemeng Cheng, Ruofan Chen, Tianxing Ma, Li-Gang Wang, Yun Song, and Hai-Qing Lin, Electronic band gaps and transport properties in aperiodic bilayer graphene superlattices of Thue-Morse sequence, Appl. Phys. Lett. 103, 172106 (2013). Yun Song, Hongkang Song, and Shiping Feng, The effects of disorder and interactions on the Anderson transition in doped graphene, J. Phys.: Condens. Matter 23, 205501 (2011).