Faculty Assistant

Heather Krupinski
Frick Laboratory, 128

Research Focus

Leslie Schoop video interviewSome materials are not easily described with conventional, textbook, condensed matter physics laws. These quantum materials can exhibit exotic properties that could help improve information technology (for example: being able to build quantum computers). Additionally, they can be hosts of completely new physics and can even help to increase our understanding of the universe. New exciting phenomena are rapidly predicted by theoretical physicists. In order to study these properties, materials that fulfill the requirements need to be discovered first. This is where chemistry comes into play. Combining lessons from inorganic chemistry with electronic structure calculations gives predictive power to find these materials. After identifying interesting candidates, we will synthesize and characterize them.

Our group operates with the following procedure: First, inspiration comes from recognizing patterns in electronic structure, crystal structure, and properties of known materials. Then, this knowledge is used to find a compound that could be a starting point to realize a desired property in a new material. Chemical concepts about bonding and electron count are the most important tools for achieving this. Subsequently, the electronic structure is calculated  using available codes. If it confirms the initial idea, the material will be synthesized and characterized. To make the new materials, we use the combined knowledge of solid state chemistry, including methods such as flux growth, vapor transport, and Bridgman growth. Finally, if the crystal structure assumed for the electronic structure calculation and the real crystal structure match, the properties can be measured.

Research Areas
Inorganic Chemistry
Spectroscopy / Physical Chemistry

2019 Beckman Young Investigator Awardee

2015 Minerva Fast Track Fellowship, Max Planck Society

Selected Recent Publications

X. Song, G. Cheng, D. Weber, F. Pielnhofer, S. Lei, S. Klemenz, Y. W. Yeh, K. A. Filsinger, C. B. Arnold, N. Yao, and L. M. Schoop. Soft chemical synthesis of HxCrS2: an antiferromagnetic material with alternating amorphous and crystalline layers. J. Am. Chem. Soc., 2019. web

S. Lei, V. Duppel, J. M. Lippmann, J. Nuss, B. V. Lotsch, and L. M. Schoop. Charge Density Waves and Magnetism in Topological Semimetal Candidates GdSbxTe2-x-δ. Adv. Quantum Technologies, 2019. web

S. Klemenz, S. Lei, and L. M. Schoop. Topological Semimentals in Square-Net Materials. Annual Reviews of Material Research, Vol 49:185-206, 2019. web

JJ Frick, A Topp, S Klemenz, M Krivenkov, A Varykhalov, CR Ast, AB Bocarsly, and LM Schoop. Single-Crystal Growth and Characterization of the Chalcopyrite Semiconductor CuInTe2 for Photoelectrochemical Solar Fuel Production. J. Phys. Chem. Lett., 9(23), 6833-6840, 2018. web

LM Schoop, F Pielnhofer, and BV Lotsch. Chemical Principles of Topological Semimetals. Chem. Mater. 30, 3155-3176, 2018. web

LM Schoop, A Topp, J Lippmann, F Orlandi, L Muechler, MG Vergniory, Y Sun, AW Rost, V Duppel, M Krivenkov, S Sheoran, P Manuel, A Varykhalov, BH Yan, RK Kremer, CR Ast, and BV Lotsch. Tunable Weyl and Dirac states in the nonsymmorphic compound CeSbTe. Sci. adv., 4:eaar2317, 2018. web

A Topp, JM Lippmann, A Varykhalov, V Duppel, BV Lotsch, CR Ast, and LM Schoop. Non-symmorphic band degeneracy at the Fermi level in ZrSiTe. N. J. Phys., 18:125014, 2016.

LM Schoop, MN Ali, C Straßer, A Topp, A Varykhalov, D Marchenko, Vi Duppel, SSP Parkin, BV Lotsch, and CR Ast. Dirac Cone Protected by Non- Symmorphic Symmetry and 3D Dirac Line Node in ZrSiS. Nat. Comm., 7:11696, 2016.

D Weber, LM Schoop, V Duppel, JM Lippmann, J Nuss, and BV Lotsch. Magnetic Properties of Restacked 2D Spin 12 Honeycomb RuCl3 Nanosheets. Nano Lett., 16:3578, 2016.