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

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.

MN Ali, LM Schoop, C Garg, JM Lippmann, E Lara, BV Lotsch, and S Parkin. Butterfly Magnetoresistance, Quasi-2D Dirac Fermi Surfaces, and a Topological Phase Transition in ZrSiS. Sci. Adv., 2:e1601742, 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.

A Kuhn, LM Schoop, R Eger, I Moudrakovski, S Schwarzmueller, RK Kremer, O Oeckler, and BV Lotsch. The Copper Selenidophosphates Cu4P2Se6, Cu4P3Se4, Cu4P4Se3, and CuP2Se, Featuring novel 0-, 1-, and 2-Dimensional Anions. Inorg. Chem., 55:8031, 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.

LM Schoop, R Eger, RK Kremer, A Kuhn, J Nuss, and BV Lotsch. Structural stability diagram of ALnP2S6 compounds (A = Na, K, Rb, Cs; Ln = lanthanide). Inorg. Chem., 56:1121, 2017.

P Ganter, LM Schoop, and BV Lotsch. Towards Tunable Photonic Nanosheet Sensors: Strong Influence of the Interlayer Cation on the Sensing Characteristics. Adv. Mater., 29:1604884, 2017.

T Holzmann, LM Schoop, MN Ali, I Moudrakovski, G Gregori, J Maier, RJ Cava, and BV Lotsch. Li0.6[Li0.2Sn0.8S2] A Layered Lithium Superionic Conductor. Energy Environ Sci., 9:2578, 2016.