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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 energy applications, such as photon-enhanced thermionic emission and novel diamondoids for lighting and field emission.

Dr. Shen is the Paul Pigott Professor in Physical Sciences, and a senior fellow of the Precourt Institute for Energy, Stanford University. He is also the Advisor for Science and Technology of SLAC National Accelerator Laboratory and a member of the advisory committee of the Joint Center of Energy Storage Research. Over the last two decades, he has mentored more than fifty graduate students and postdoctoral associates. About thirty of them are now faculty members of research universities around the world.

Clay, W. A. et al. Physical properties of materials derived from diamondoid molecules. Rep. Prog. Phys. 78, 016501 (2015)

Hashimoto, M. et al. Direct spectroscopic evidence for phase competition between the pseudogap and superconductivity in Bi₂Sr₂CaCu₂O_8+δ. Nature Mater. 14, 37 (2015)

Ugeda, M. M. et al. Giant bandgap renormalization and excitonic effects in a monolayer transition metal dichalcogenide semiconductor. Nature Mater. 13, 1091 (2014)

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

Zhang, Y. et al. Molecular beam epitaxial growth of a three-dimensional topological Dirac semimetal Na₃Bi. App. Phys. Lett. 105, 031901 (2014)

Feng, Z. A. et al. Fast vacancy-mediated oxygen ion incorporation across the ceria–gas electrochemical interface. Nature Comm. 5, 4374 (2014)

Yang, S.-L. et al. Electron propagation from a photo-excited surface: implications for time-resolved photoemission. App. Phys. A 116, 85 (2014)

Liu, Z. K. et al. A stable three-dimensional topological Dirac semimetal Cd₃As₂. Nature Mat. 677, 85 (2014)

Hashimoto, M. et al. Energy gaps in high-transition-temperature cuprate superconductors. Nature Phys. 10, 483 (2014)

Yi, M. et al. Dynamic competition between spin-density wave order and superconductivity in underdoped Ba_1-xK_xFe₂As₂. Nature Comm. 5, 3711 (2014)

Yang, S.-L. et al. Superconducting graphene sheets in CaC₆ enabled by phonon-mediated interband interactions. Nature Comm. 5, 3493 (2014)

Liu, Z. K. et al. Discovery of a Three-Dimensional Topological Dirac Semimetal, Na₃Bi. Science 343, 864 (2014)

Vishik, I. M. et al. Angle-resolved photoemission spectroscopy study of HgBa₂CuO_4+δ. Phys. Rev. B 89, 195141 (2014)

Hashimoto, M. et al. Direct observation of bulk charge modulations in optimally doped Bi_1.5Pb_0.6Sr_1.54CaCu₂O_8+δ. Phys. Rev. B 89, 220511(R) (2014)

Staub, U. et al. Persistence of magnetic order in a highly excited Cu²⁺ state in CuO. Phys. Rev. B 89, 220401(R) (2014)

Suzuki, H. et al. Strongly three-dimensional electronic structure and Fermi surfaces of SrFe₂(As_0.65P_0.35)₂: Comparison with BaFe₂(As_1-xP_x)₂. Phys. Rev. B 89, 184513 (2014)

Ideta, S. et al. Electronic structure of BaNi₂P₂ observed by angle-resolved photoemission spectroscopy. Phys. Rev. B 89, 195138 (2014)

Yang, Y. L. et al. Shielded piezoresistive cantilever probes for nanoscale topography and electrical imaging. J. Micromech. Microeng. 24, 045026 (2014)

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

Lee, J. J. et al. Charge-orbital-lattice coupling effects in the dd excitation profile of one-dimensional cuprates. Phys. Rev. B 89, 041104(R) (2014)