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Emergent electronic and magnetic properties in quantum materials including high-temperature superconductivity, unconventional magnetism, and metal-insulator transitions. In particular, we are interested in how properties can be controlled in artificially engineered quantum materials grown by molecular beam epitaxy using parameters such as interfacial engineering, heterostructuring, epitaxial strain, and dimensional confinement.
- Cornell Center for Materials Research (CCMR)
- Kavli Institute at Cornell for NanoScale Science
- Laboratory of Atomic and Solid State Physics (LASSP)
Our research focuses on investigating many-body interactions in quantum materials, with the aim of controlling potentially exotic properties such as superconductivity, magnetism, metal-insulator transitions, and topological properties. We employ a combination of techniques including angle-resolved photoemission spectroscopy (ARPES), molecular beam epitaxy (MBE), and synchrotron-based x-ray probes including x-ray absorption spectroscopy and resonant x-ray scattering. A major research thrust is the synthesis and investigation of artificially engineered heterostructures of quantum materials synthesized by molecular beam epitaxy (MBE) with strong electron correlations which allow new emergent states to be created at the interface.
Jason Kawasaki (Kavli Fellow), Shuolong Yang (Kavli Fellow)
Bulat Burganov, Shouvik Chatterjee, Haofei Wei, Ed Lochocki, Jacob Ruf, Brendan Faeth, and Jocienne Nelson
Sophie Crisp, Alex Hirst, Yifan Su
H.I. Wei, C. Adamo, E.A. Nowadnick, E.B. Lochocki, S. Chatterjee, J.P. Ruf, M.R. Beasley, D.G. Schlom, and K.M. Shen. Electron Doping of the Parent Cuprate La2CuO4 without Cation Substitution. Physical Review Letters 117 (2016).
B. Burganov, C. Adamo, A. Mulder, M. Uchida, P.D.C. King, J.W. Harter, D.E. Shai, A.S. Gibbs, A.P. Mackenzie, R. Uecker, M. Bruetzam, M.R. Beasley, C.J. Fennie, D.G. Schlom, and K.M. Shen. Strain Control of Fermiology and Many-Body Interactions in Two-Dimensional Ruthenates. Physical Review Letters 116, 197003 (2016).
Y.F. Nie, D. Di Sante, S. Chatterjee, P.D.C. King, M. Uchida, S. Ciuchi, D.G. Schlom, and K.M. Shen. Formation and observation of a quasi-two-dimensional dxy electron liquid in epitaxially stabilized Sr2-xLaxTiO4 thin films. Physical Review Letters 115, 096405 (2015)
P.D.C. King, H.I. Wei, Y.F. Nie, M. Uchida, C. Adamo, S. Zhu, X. He, I. Bozovic, D.G. Schlom, and K.M. Shen. Atomic-scale control of competing electronic phases in ultrathin LaNiO3. Nature Nanotechnology 9, 443 (2014)
Y.F. Nie, P.D.C. King, C.H. Kim, M. Uchida, H.I. Wei, C.J. Fennie, D.G. Schlom, and K.M. Shen. Interplay of spin-orbit interactions, dimensionality, and octahedral rotations in semimetallic SrIrO3. Physical Review Letters 114, 016401 (2015)
E.J. Monkman, C. Adamo, J.A. Mundy, D.E. Shai, J.W. Harter, D.W. Shen, B. Burganov, D.A. Muller, D.G. Schlom, and K.M. Shen. Quantum Many-Body Interactions in Digital Oxide Superlattices. Nature Materials 11, 855 (2012)
Y.F. Nie, Y. Zhu, C.-H. Lee, L.F Kourkoutis, J.A. Mundy, J. Junquera, Ph. Ghosez, D.J. Baek, S. Sung, X.X. Xi, K.M. Shen, D.A. Muller, and D.G. Schlom. Atomically precise interfaces from non-stoichiometric deposition. Nature Communications 5:4530 (2014)
K.E. Arpino, D.C. Wallace, Y.F. Nie, T. Birol, P.D.C. King, S. Chatterjee, M. Uchida, S.M. Koohpayeh, J.-J. Wen, K. Page, C.J. Fennie, K.M. Shen, and T.M. McQueen. Evidence for Topologically Protected Surface States and a Superconducting Phase in [Tl4](Tl1−xSnx)Te3 Using Photoemission, Specific Heat, and Magnetization Measurements, and Density Functional Theory. Physical Review Letters 112, 017002 (2014)
S. Chatterjee, J. Trinckauf, T. Hanke, D.E. Shai, J.W. Harter, T.J. Williams, G.M. Luke, K.M. Shen, and J. Geck. Formation of the Coherent Heavy Fermion Liquid at the Hidden Order Transition in URu2Si2. Physical Review Letters 110, 186401 (2013)
J.W. Harter, L. Maritato, D.E. Shai, E.J. Monkman, Y. Nie, D.G. Schlom, and K.M. Shen. Nodeless superconductivity arising from strong (π,π) antiferromagnetism in the infinite-layer electron-doped cuprate Sr1-xLaxCuO2. Physical Review Letters 109, 267001 (2012)
D.E. Shai, C. Adamo, D.W. Shen, C.M. Brooks, J.W. Harter, E.J. Monkman, B. Burganov, D.G. Schlom, and K.M. Shen. Quasiparticle Mass Enhancement and Temperature Dependence of the Electronic Structure of Ferromagnetic SrRuO3 Thin Films. Physical Review Letters 110, 087004 (2013)
D.E. Shai, A.J. Melville, J.W. Harter, E.J. Monkman, D.W. Shen, A. Schmehl, D.G. Schlom, and K.M. Shen. Temperature Dependence of the Electronic Structure and Fermi Surface Reconstruction of Eu1-xGdxO through the Ferromagnetic Metal-Insulator Transition. Physical Review Letters 106, 267003 (2012)