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Our current research involves the study of emergent properties in quantum materials. Our primary experimental tool is angle-resolved photoemission spectroscopy (ARPES), but we also perform experiments using resonant x-ray scattering and near-field microwave microscopy techniques. Our research also involves the exploration of materials inspired by applications, such as novel diamondoids as novel materials template.

Dr. Shen is the Paul Pigott Professor in Physical Sciences, Professor of Physics, Applied Physics and SLAC Photon Science Departments, as well as a senior fellow of the Precourt Institute for Energy, at Stanford University. He is also the Advisor for Science and Technology of SLAC National Accelerator Laboratory and a member of the faculty advisory board of the Knight-Hennessy Scholars program at Stanford University. Over the last three decades, he has mentored more than eighty graduate students and postdoctoral associates. Over forty of them are now faculty members of research universities and about ten of them become scientific staff of national laboratories and research institutes.

Cuprate Superconductors

S.-D. Chen, M. Hashimoto et al., Incoherent strange metal sharply bounded by a critical doping in Bi2212. Science 366, 1099 (2019)

Y. He, M. Hashimoto et al., Rapid change of superconductivity and electron-phonon coupling through critical doping in Bi-2212. Science 362, 62 (2018)

A. Damascelli, Z. Hussain and Z.-X. Shen, Angle-resolved photoemission studies of the cuprate superconductors. Reviews of Modern Physics 75, 473 (2003)

A. Lanzara et al., Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors. Nature 412, 510 (2001)

A. G. Loeser et al., Excitation Gap in the Normal State of Underdoped Bi₂Sr₂CaCu₂O_8+δ. Science 273, 325 (1996)

B. O. Wells et al., E versus k Relations and Many Body Effects in the Model Insulating Copper Oxide Sr₂CuO₂Cl₂. Physical Review Letters 74, 964 (1995)

Z.-X. Shen et al., Anomalously large gap anisotropy in the a-b plane of Bi₂Sr₂CaCu₂O_8+δ. Physical Review Letters 70, 1553 (1993)

Topological Materials

Z. K. Liu, B. Zhou et al., Discovery of a Three-Dimensional Topological Dirac Semimetal, Na₂Bi. Science 343, 864 (2014)

Y. L. Chen, et al., Massive Dirac Fermion on the Surface of a Magnetically Doped Topological Insulator. Science 329, 659 (2010)

Y. L. Chen, et al., Experimental Realization of a Three-Dimensional Topological Insulator, Bi₂Te₃. Science 325, 178 (2009)

Iron Based Superconductors

H. Pfau et al., Momentum Dependence of the Nematic Order Parameter in Iron-Based Superconductors. Physical Review Letters 123, 066402 (2019)

M. Yi, et al., Role of the orbital degree of freedom in iron-based superconductors. npj Quantum Materials 2, 57 (2017)

J. J. Lee, F. T. Schmitt, R. G. Moore et al., Interfacial mode coupling as the origin of the enhancement of T_c in FeSe films on SrTiO₃. Nature 515, 245 (2014)

M. Yi et al., Symmetry breaking orbital anisotropy observed for detwinned Ba(Fe_1-xCo_x)₂As₂ above the spin density wave transition. Proceedings of the National Academy of Sciences 108, 6878 (2011)

2D materials

S. Tang, C. Zhang et al. Quantum spin Hall state in monolayer 1T'-WTe₂. Nature Physics 13, 683 (2017)

Y. Zhang et al. Direct observation of the transition from indirect to direct bandgap in atomically thin epitaxial MoSe₂. Nature Nanotechnology 9, 111 (2014)

Time Resolved Photoemission and LCLS Science

S. Gerber, S.-L. Yang et al., Femtosecond Electron-Phonon Lock-In by Photoemission and X-Ray Free-Electron Laser. Science 357, 71(2017)

F. Schmitt et al., Transient Electronic Structure and Melting of a Charge Density Wave in TbTe₃. Science 321, 1649(2008)

Microwave Impedance Microscopy

M. Allen et al., Visualization of an axion insulating state at the transition between 2 chiral quantum anomalous Hall states. Proceedings of the National Academy of Sciences 116, 14511(2019)

E. Y. Ma, Y. T. Cui, K. Ueda et al., Mobile metallic domain walls in an all-in-all-out magnetic insulator. Science 350, 538(2015)