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Chemistry and Physics of Nitride Based Materials

Applicant von Rohr Fabian
Number 174015
Funding scheme Ambizione
Research institution Institut für Chemie Universität Zürich
Institution of higher education University of Zurich - ZH
Main discipline Inorganic Chemistry
Start/End 01.09.2017 - 31.01.2021
Approved amount 969'688.00
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All Disciplines (2)

Discipline
Inorganic Chemistry
Condensed Matter Physics

Keywords (3)

Superconductivity; Quantum Materials; Solid State Chemistry

Lay Summary (German)

Lead
Die Chemie von Quantenmaterialien
Lay summary

Im Rahmen dieses Ambizione Projektes werden wir chemische Materialien untersuchen mit hoch-komplexen elektronischen Eigenschaften untersuchen. Diese Materialien haben grosses Potential für zukünftige technologische Innovationen. Diese Forschung zielt daher auf die Entdeckung und das Verständnis von neuartigen sogenannten Quantenmaterialien, die aussergewöhnliche physikalische Eigenschaften aufweisen. Zu diesem Zweck synthetisieren wir neue Materialien, wachsen hochwertige Einkristalle und führen komplexe Messungen der grundlegenden physikalischen Eigenschaften durch. Das ultimative Ziel dieser Forschungsrichtung ist die Entdeckung eines Raumtemperatur-Supraleiters. Eine solche Entdeckung würde die Energieproduktion, die Lagerung und den Transport revolutionieren. Sie hätte auch einen unvergleichlichen Einfluss auf Elektronik und zukünftige elektronische Geräte.

Direct link to Lay Summary Last update: 25.08.2017

Responsible applicant and co-applicants

Employees

Publications

Publication
Uniaxial strain-induced phase transition in the 2D topological semimetal IrTe2
Pulkkinen Aki, Kremer Geoffroy, Salzmann Björn, Mottas Marie-Laure, Hildebrand Baptiste, Jaouen Thomas, Kim Timur K., Mukherjee Saumya, Ma KeYuan, Muntwiler Matthias, von Rohr Fabian O., Cacho Cephise, Monney Claude, Nicholson Christopher W., Rumo Maxime (2021), Uniaxial strain-induced phase transition in the 2D topological semimetal IrTe2, in Communications Materials, 2(1), 25-25.
Polytypism and superconductivity in the NbS 2 system
Witteveen Catherine, Górnicka Karolina, Chang Johan, Månsson Martin, Klimczuk Tomasz, von Rohr Fabian O. (2021), Polytypism and superconductivity in the NbS 2 system, in Dalton Transactions, 50(9), 3216-3223.
Short-range magnetic interactions and spin-glass behavior in the quasi-two-dimensional nickelate Pr4Ni3O8
Huangfu Shangxiong, Guguchia Zurab, Cheptiakov Denis, Zhang Xiaofu, Luetkens Hubertus, Gawryluk Dariusz Jakub, Shang Tian, von Rohr Fabian O., Schilling Andreas (2020), Short-range magnetic interactions and spin-glass behavior in the quasi-two-dimensional nickelate Pr4Ni3O8, in Physical Review B, 102(5), 054423-054423.
Preparation and characterization of high-entropy alloy (TaNb)1−x(ZrHfTi)x superconducting films
Zhang Xiaofu, Winter Natascha, Witteveen Catherine, Moehl Thomas, Xiao Yuan, Krogh Fabio, Schilling Andreas, von Rohr Fabian O. (2020), Preparation and characterization of high-entropy alloy (TaNb)1−x(ZrHfTi)x superconducting films, in Physical Review Research, 2(1), 013375-013375.
Anisotropic character of the metal-to-metal transition in Pr4Ni3O10
Huangfu Shangxiong, Jakub Gawryluk Dariusz, Zhang Xiaofu, Blacque Olivier, Puphal Pascal, Pomjakushina Ekaterina, von Rohr Fabian O., Schilling Andreas (2020), Anisotropic character of the metal-to-metal transition in Pr4Ni3O10, in Physical Review B, 101(10), 104104-104104.
Facile One‐step Synthesis of Zn 1– x Mn x SiN 2 Nitride Semiconductor Solid Solutions via Solid‐state Metathesis Reaction
Zeman Otto E. O., von Rohr Fabian O., Neudert Lukas, Schnick Wolfgang (2020), Facile One‐step Synthesis of Zn 1– x Mn x SiN 2 Nitride Semiconductor Solid Solutions via Solid‐state Metathesis Reaction, in Zeitschrift für anorganische und allgemeine Chemie, 646(4), 228-233.
Low-energy excitations in type-II Weyl semimetal Td−MoTe2 evidenced through optical conductivity
Santos-Cottin D., Martino E., Le Mardelé F., Witteveen C., von Rohr F. O., Homes C. C., Rukelj Z., Akrap Ana (2020), Low-energy excitations in type-II Weyl semimetal Td−MoTe2 evidenced through optical conductivity, in Physical Review Materials, 4(2), 021201-021201.
Nodeless superconductivity and its evolution with pressure in the layered dirac semimetal 2M-WS2
Guguchia Zurab, Gawryluk Dariusz J., Brzezinska Marta, Tsirkin Stepan S., Khasanov Rustem, Pomjakushina Ekaterina, von Rohr Fabian O., Verezhak Joel A. T., Hasan M. Zahid, Neupert Titus, Luetkens Hubertus, Amato Alex (2019), Nodeless superconductivity and its evolution with pressure in the layered dirac semimetal 2M-WS2, in npj Quantum Materials, 4(1), 50-50.
Superconducting order parameter of the nodal-line semimetal NaAlSi
Muechler Lukas, Guguchia Zurab, Orain Jean-Christophe, Nuss Jürgen, Schoop Leslie M., Thomale Ronny, von Rohr Fabian O. (2019), Superconducting order parameter of the nodal-line semimetal NaAlSi, in APL Materials, 7(12), 121103-121103.
Unconventional scaling of the superfluid density with the critical temperature in transition metal dichalcogenides
von Rohr F. O., Orain J.-C., Khasanov R., Witteveen C., Shermadini Z., Nikitin A., Chang J., Wieteska A. R., Pasupathy A. N., Hasan M. Z., Amato A., Luetkens H., Uemura Y. J., Guguchia Z. (2019), Unconventional scaling of the superfluid density with the critical temperature in transition metal dichalcogenides, in Science Advances, 5(11), eaav8465-eaav8465.
Large resistivity reduction in mixed-valent CsAuBr3 under pressure
Naumov Pavel, Huangfu Shangxiong, Wu Xianxin, Schilling Andreas, Thomale Ronny, Felser Claudia, Medvedev Sergey, Jeschke Harald O., von Rohr Fabian O. (2019), Large resistivity reduction in mixed-valent CsAuBr3 under pressure, in Physical Review B, 100(15), 155113-155113.
Superconductivity in the η-carbide-type oxides Zr4Rh2Ox
Ma KeYuan, Lago Jorge, von Rohr Fabian O. (2019), Superconductivity in the η-carbide-type oxides Zr4Rh2Ox, in Journal of Alloys and Compounds, 796, 287-292.
The h‐SbxWO3+2x Oxygen Excess Antimony Tungsten Bronze
von Rohr Fabian O., Ryser Alice, Ji Huiwen, Stolze Karoline, Tao Jing, Frick Jessica J., Patzke Greta R., Cava Robert J. (2019), The h‐SbxWO3+2x Oxygen Excess Antimony Tungsten Bronze, in Chemistry – A European Journal, 25(8), 2082-2088.
Origin of the pressure-dependent Tc valley in superconducting simple cubic phosphorus
Wu Xianxin, Jeschke Harald O., Di Sante Domenico, von Rohr Fabian O., Cava Robert J., Thomale Ronny (2018), Origin of the pressure-dependent Tc valley in superconducting simple cubic phosphorus, in Physical Review Materials, 2(3), 034802-034802.
Isoelectronic substitutions and aluminium alloying in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor
von Rohr Fabian O., Cava Robert J. (2018), Isoelectronic substitutions and aluminium alloying in the Ta-Nb-Hf-Zr-Ti high-entropy alloy superconductor, in Physical Review Materials, 2(3), 034801-034801.

Collaboration

Group / person Country
Types of collaboration
Zurab Guguchia Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Harald Jeschke, Okayama University Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
17th European Conference on Solid State Chemistry Poster Superconductivity in the eta-carbide-type oxides Zr4Rh2O1-x 01.09.2020 Lille, France Ma Keyuan;
IMS2019 - 3d International Conference GRK 1621 in Dresden Talk given at a conference Chemistry of Quantum Mateirals 09.09.2019 Dresden, Germany von Rohr Fabian;
Seminar at EPFL Individual talk Chemistry of Quantum Materials 04.09.2019 Lausanne, Switzerland von Rohr Fabian;
SPS Annaul Meeting Talk given at a conference Chemical Complexity of High-Entropy Superconductors 28.08.2019 Zurich, Switzerland von Rohr Fabian;
SPS Annual Meeting Talk given at a conference Electron counting and chemical complexity in high-entropy alloy superconductors 26.08.2019 Zurich, Switzerland von Rohr Fabian; Ma Keyuan;
Seminar at the University of Oslo Individual talk Chemistry of Quantum Materials 18.02.2019 Oslo, Norway von Rohr Fabian;
E-MRS Conference Talk given at a conference Superconductivity in black phosphorus 16.09.2018 Warsaw, Poland von Rohr Fabian;
Seminar at University of Bern in the Chemistry Department Individual talk Chemistry of New Compounds with Complex Electronic Properties 14.09.2018 Bern, Switzerland von Rohr Fabian;
7th EuCheMS Chemistry Congress Talk given at a conference High-pressure synthesis and characterization of b-GeSe 26.08.2018 Liverpool, Great Britain and Northern Ireland von Rohr Fabian;
Seminar at University of Fribourg Individual talk Synthesis and Characterization of Black Phosphorus and its IV-VI Analogues 05.06.2018 University of Fribourg, Switzerland von Rohr Fabian;
Seminar at University of Geneva in the Physics Department Individual talk Synthesis and Characterization of Black Phosphorus and its IV-VI Analogues 09.03.2018 Genf, Switzerland von Rohr Fabian;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Chemistry of Quantum Materials Talk 20.11.2019 Restaurant UniTurm UZH, Switzerland von Rohr Fabian;


Communication with the public

Communication Title Media Place Year
Media relations: print media, online media Zufall und Pringles UZH Magazin German-speaking Switzerland 2020

Abstract

Within the duration of this Ambizione grant period, we will investigate a class of compounds with great potential for exotic physical phenomena, and for future technological innovations. The major aim of this research is to improve the understanding of the relationships between chemical bonding and the electronic properties of solids. This research therefore targets the discovery and understanding of novel quantum materials that exhibit extraordinary physical properties. To this end, we synthesize new materials, grow high-quality single crystals, and perform complex measurements of fundamental physical properties. This combination of chemical synthesis and physical properties measurements is one of the great strengths in this line of research, because it allows for immediate feedback loops and henceforth fast improvements of the materials. The ultimate goal, of this line of research is the discovery of a room-temperature superconductor. Such a discovery would revolutionize energy production, storage, and transport. It would also have an unparalleled impact on electronics and future devices.
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