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Rosner, Helge
Helge Rosner
Telefon: +49 351 4646-2233
Fax: +49 351 4646-4902
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Teaser 1489565185

Springer Thesis Prize for Stephen Edkins

14. März 2017
Stephen Edkins from the Physics of Quantum Materials department has won a Springer Thesis Prize for his PhD dissertation entitled ‘Visualising the Charge and Cooper Pair Density Waves in Cuprates’.   [mehr]
Teaser 1487750922

Von Graphit und Stickstoff zu CCN3– in nur einem Schritt

22. Februar 2017
Kohlenstoff und Stickstoff sind in elementarer Form weitgehend unreaktiv, daher werden in der organischen Synthese häufig reaktive Verbindungen, wie Ammoniak, zur C–N Bindungsbildung eingesetzt. Überraschenderweise gelang es Wissenschaftler_innen am MPI nun, CCN3– aus den Elementen darzustellen – ein lang gesuchtes quasi organisches Molekülanion. Das Anion ist im Wirtsgerüst des Ba5[TaN4][C2N]-Nitridometallats stabilisiert. Die hohe Reaktivität von CCN3– könnte bei organischen Synthesen hilfreich sein. [mehr]
Teaser 1490617323

Sanjay Singh leaving for the School of Materials Science and Technology at the Indian Institute of Technology (IIT-BHU), Varanasi, India

13. Februar 2017
Sanjay Singh has been working as a group leader in the Solid State Chemistry department of Prof. Claudia Felser. He has joined as an assistant professor in the School of Materials Science and Technology at the Indian Institute of technology (IIT-BHU), Varanasi, India. He will be actively collaborating with Prof. Claudia Felser and his colleagues in MPI-CPfS. [mehr]
Teaser 1486715321

Binghai Yan leaving for the Weizmann Institute of Science, Israel

10. Februar 2017
Binghai Yan has been working as a group leader in the solid-state chemistry department of Prof. Claudia Felser since 2012. In Feb 2017 he is appointed as an assistant professor in the department of condensed matter physics, Weizmann Institute of Science, Israel. In the new institute, he will continue his theoretical research on emerging topological materials, not least in cooperation with the Felser group. [mehr]
Teaser 1486027060

Alexander von Humboldt fellow Emilia Morosan joins Solid State Chemistry group of MPI CPfS

2. Februar 2017
Emilia Morosan is a professor of Physics and Astronomy, Chemistry, and Materials Science and Nanoengineering at Rice University. Her research focuses on the design and synthesis of new compounds with unconventional electronic and magnetic ground states, with particular interest in superconductivity, local and itinerant electron magnetism, heavy fermions, quantum phase transitions and more. [mehr]
Teaser 1485336014

Discovery of tip induced superconductivity in Weyl semimetal

25. Januar 2017
A Weyl semimetal is a topologically non-trivial phase of matter that hosts mass-less Weyl fermions, particles that remained elusive for more than 80 years since their theoretical prediction by the German mathematical physicist Hermann Weyl in 1929, but discovered experimentally only in 2015. [mehr]
Teaser 1484916701

Ein unkonventioneller Supraleiter spürt höchste Drücke

20. Januar 2017
Wenn es gelingt, moderne Materialien gezielt zu manipulieren, können dramatische Änderungen auftreten. Mit uniaxialem Druck ist es uns gelungen, die Topologie der elektronischen Struktur des unkonventionellen Supraleiters Sr2RuO4 zu beeinflussen. Damit einher geht eine Verdoppelung der supraleitenden Sprungtemperatur. Messungen in verschiedenen Magnetfeldern geben Hinweise auf den Charakter der Supraleitung in diesem Material. [mehr]
Teaser 1484735608

The ever expanding family of topological materials: multiple Dirac cones established in LaBi

18. Januar 2017
Scientists from the Max Plank Institute for Chemical Physics of Solids in Dresden have explored the electronic structure of LaBi and have observed the existence of three Dirac cones: two that coexist at the corner and one at the center of its Brillouin zone. Thus, they have unambiguously proven the topological character of LaBi.   [mehr]
Teaser 1484559776

Announcement of the Max Planck Center with POSTECH and NSRRC/NTCU/NTHU

16. Januar 2017
Press Conference at the Ministry of Science and Technology of Taiwan 4 January 2017 in Taipeh [mehr]
Teaser 1484305439

Drum prüfe, wer sich ewig bindet, ob sich eine Bindung findet! (nach F. Schiller)

13. Januar 2017
Verbindungen im MgAgAs-Strukturtyp (Halb-Heusler Phasen) stellen eine wichtige Substanzklasse in den modernen Materialwissenschaften dar. Die Kenntnis aller möglichen Elementkombinationen ist hierbei von elementarer Bedeutung.  Mittels einer wissensbasierten Erweiterung des reinen Hoch-Durchsatz Computerchemie-Verfahrens wurden auf der Basis eines speziell entwickelten chemischen Bindungsmodells bislang unentdeckte Phasen im MgAgAs-Typ vorhergesagt und nachfolgend experimentell verifiziert. [mehr]
Teaser 1481548634

Press Release: Fe3O4 thin films: controlling and manipulating an elusive quantum material

12. Dezember 2016
Fe3O4 (magnetite) is one of the most elusive quantum materials as well as one of the most studied transition metal oxide for thin film applications. Yet, despite the tremendous amount of work devoted to preparing magnetite thin films, the enigmatic Verwey transition is in thin films extremely broad and occurs at substantially lower temperatures than that in bulk crystals. Recently, scientists at MPI CPfS have succeeded in growing magnetite thin films which not only have the Verwey transition as sharp as in the bulk, but also show transition temperatures that are substantially higher than the bulk. [mehr]
Teaser 1481544039

Pressemeldung: When being superficial becomes a virtue

12. Dezember 2016
SmB6 is predicted to be a candidate material for a topological Kondo insulator. By utilizing scanning tunneling spectroscopy (STS) down to 0.35 K with energy resolution of ~0.5 meV, we determined the electronic fine structure on large, non-reconstructed surfaces. Impurity, magnetic-field and temperature dependent STS spectra revealed bulk and/or surface contributions to the electronic states, and unveiled a new energy scale of >7 K related to a suppressed Kondo effect at the surface of SmB6. [mehr]
Teaser 1479896591

Pressemeldung: Hidden order and 5f electron density

23. November 2016
URu2Si2 undergoes a mysterious ordering transition at 17 K which challenges theoretical and experimental physicists since more than thirty years. By now is generally understood that the distribution of the uranium electron density plays a key role, however, measuring these has so far not been possible. Recently, scientists from MPI-CPfS, University of Cologne and Van-der-Waals-Zeeman Institute in Amsterdam were able to measure these charge distributions by means of inelastic x-ray scattering.  [mehr]
Teaser 1479907556

Dr. Elena Hassinger wurde auf eine Tenure Track Professur an die Technische Universität München (TUM) berufen.

23. November 2016
Im Rahmen der Allianz MaxPlanck@TUM wird sie ihre Forschungsgruppe „Physik unkonventioneller Metalle und Supraleiter“ an unserem Institut weiterführen und ist gleichzeitig Professorin an der TU München. [mehr]
Teaser 1479390343

MPI-CPfS participates in the speedCIGS project funded by BMWi

17. November 2016
The solid state chemistry (SSC) department of MPI-CPfS takes part in the speedCIGS project which its main aims is to speed up the manufacturing process of solar cells based on Cu(In,Ga)Se2 (CIGS). The project is funded by Federal Ministry for Economic Affairs and Energy. MPI-CPfS collaborates in this project by performing computer simulation to support the experimental findings of other partners from industry and research institutes. [mehr]
Teaser 1476859357

Pressemeldung: Dynamic atomic reconstruction: how Fe3O4 thin films evade polar catastrophe for epitaxy

18. Oktober 2016
The growth process of polar interfaces of oxide materials in general is a mystery. Recently, MPI CPfS scientists, in collaboration with University of Cologne, Hiroshima University, ESRF, and NSRRC, make a paradigm shift in understanding how polar interfaces can grow. An unexpected but elegant growth principle is developed, namely ‘dynamic atomic reconstruction’, in which atoms rearrange themselves during the deposition such that a well ordered and smooth interface is formed, despite the destabilizing forces due to the catastrophic electrostatic potential. [mehr]
Teaser 1476262440

Press Release: A molecular quantum magnet realized in an inorganic solid

12. Oktober 2016
A molecular magnet is expected to be a feasible material for building devices like quantum computers. As a result of a weak magnetic interaction between the molecules, it lacks collective magnetic properties of a common magnet, but the intra-molecular magnetic interaction gives rise to irreversible quantum magnetism, macroscopic quantum tunneling, and novel phenomena unique to the mesoscopic world. [mehr]
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