Long Zhang’s Homepage

        Welcome to my homepage! My name is Long Zhang (张龙). I am currently an assistant professor in Kavli Institute for Theoretical Sciences (KITS), University of Chinese Academy of Sciences (UCAS).

Ø  Basic Information

      Surname              Zhang ()

      Given Name        Long ()

      Affiliation              Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences

      Office                   S401, Teaching Building in Zhongguancun Campus

      Email                   longzhang(at)ucas.ac.cn; long.zhang06(at)gmail.com

Ø  Education

      08/2010 -- 07/2015      Ph.D. in Physics, Institute for Advanced Study, Tsinghua University

                                          Supervisor: Prof. Zheng-Yu Weng

                                          Thesis: Spin-charge correlation and high-Tc superconductivity in                                                            doped Mott insulators

      08/2006 -- 07/2010      B.Sc. in Physics, Department of Physics, Tsinghua University

Ø  Employment

      06/2017 -- present       Assistant professor, Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences

      07/2015 -- 06/2017      Postdoctoral fellow, International Center for Quantum Materials, Peking University

                                          Advisor: Prof. Fa Wang

Ø  Awards

      12/2016    Boya Postdoctoral Fellowship, Peking University

      07/2015    Beijing Graduate with Excellence, Beijing Education Commission

      10/2015    Jiang Nanxiang Scholarship, Tsinghua University

      09/2010    Chen Ning Yang Fellowship for PhD students, Institute for Advanced Study, Tsinghua University

      07/2010    Graduate with Distinction, Tsinghua University

      07/2010    Chi Sun Yeh (Ye Qisun) Award for distinguished graduates, Department of Physics, Tsinghua University

Ø  Research Interest

      My research focuses on theoretical understanding of novel phenomena in correlated electron systems, including:

              Strongly correlated electrons: Spin systems, doped Mott insulators, cuprates, iridates;

              Unconventional quantum phase transitions.

Ø  Selected publications

      (For all my preprints posted on arXiv, see here.)

      1. L. Zhang and F. Wang, Unconventional surface critical behavior induced by a quantum phase transition from the two-dimensional Affleck-Kennedy-Lieb-Tasaki phase to a Neel-ordered phase, Phys. Rev. Lett. 118, 087201 (2017).

      2. L. Zhang, F. Wang, and D.-H. Lee, Compass impurity model of Tb substitution in Sr2IrO4, Phys. Rev. B 94, 161118 (2016).

      3. L. Zhang, X.-Y. Song, and F. Wang, Quantum oscillation in narrow-gap topological insulators, Phys. Rev. Lett. 116, 046404 (2016).

      4. L. Zhang and J.-W. Mei, Quantum oscillation as diagnostics of pseudogap state in underdoped cuprates, Europhys. Lett. 114, 47008 (2016).

      5. L. Zhang and Z.-Y. Weng, Sign structure, electron fractionalization, and emergent gauge description of the Hubbard model, Phys. Rev. B 90, 165120 (2014).

Ø  Reading and Learning

      I enjoy reading and learning from the original research papers in various aspects of physics and keep writing notes. Here is a collection of my notes.

            On quantum Hall effect under the guidance of Quantum Hall Effect (M. Stone eds.): QHE-1 (TKNN number of IQHE, Laughlin wavefunction and hierarchy), QHE-2 (CSLG effective theory), QHE-3 (edge states of Abelian FQH states), QHE-4 (Moore-Read state and non-Abelions)

            I am planning to learn CFT under the guidance of Fuchs et al: CFT-1 (Fundamentals of conformal symmetry and its representation theory)

Ø  Miscellaneous Articles

      The Principle of Emergence and the Hierarchical Structure of the Nature (My term paper of Dialetics of Nature, in Chinese)

Subpages (1): Emergence