Raman spectroscopic evidence for multiferroicity in rare earth nickelate single crystals

Autor: I. Ardizzone, J. Teyssier, I. Crassee, A. B. Kuzmenko, D. G. Mazzone, D. J. Gawryluk, M. Medarde, D. van der Marel

Publikováno v: Physical Review Research, Vol 3, Iss 3, p 033007 (2021)

The rare earth nickelates RNiO_{3} are metallic at high temperatures and insulating and magnetically ordered at low temperatures. The low temperature phase has been predicted to be type II multiferroic, i.e., ferroelectric and magnetic order are coup

Externí odkaz: https://doaj.org/article/0e616d67062d499c91a01168f68ed5ab

Strong field transient manipulation of electronic states and bands

Autor: I. Crassee, L. Gallmann, G. Gäumann, M. Matthews, H. Yanagisawa, T. Feurer, M. Hengsberger, U. Keller, J. Osterwalder, H. J. Wörner, J. P. Wolf

Publikováno v: Structural Dynamics, Vol 4, Iss 6, Pp 061505-061505-16 (2017)

In the present review, laser fields are so strong that they become part of the electronic potential, and sometimes even dominate the Coulomb contribution. This manipulation of atomic potentials and of the associated states and bands finds fascinat

Externí odkaz: https://doaj.org/article/79d150a453f04f098034cfbdab313e9b

Addressing Shape and Extent of Weyl cones in TaAs by Landau level spectroscopy

Autor: D. Santos-Cottin, J. Wyzula, F. Le Mardelé, I. Crassee, E. Martino, J. Novák, G. Eguchi, Z. Rukelj, M. Novak, M. Orlita, Ana Akrap

Tantalum arsenide, TaAs, is a prime example of a topological semimetal with two types of Weyl nodes, W1 and W2, whose bulk signatures have proven elusive. We apply Landau level spectroscopy to crystals with multiple facets and identify -- among other

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7c030a3ce5dbe4ba05b9fd655d2113df
http://arxiv.org/abs/2111.11039

Magneto-Optics of a Weyl Semimetal beyond the Conical Band Approximation: Case Study of TaP

Autor: A. V. Pronin, S. Polatkan, I. Crassee, J. Wyzula, Milan Orlita, Benjamin A. Piot, L. Z. Maulana, Chandra Shekhar, Ana Akrap, Mark Oliver Goerbig, Martin Dressel, Claudia Felser, R. Kemmler

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2020, ⟨10.1103/PhysRevLett.124.176402⟩
Physical Review Letters, American Physical Society, 2020, 124 (17), ⟨10.1103/PhysRevLett.124.176402⟩

Landau-level spectroscopy, the optical analysis of electrons in materials subject to a strong magnetic field, is a versatile probe of the electronic band structure and has been successfully used in the identification of novel states of matter such as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58e8548955b4bb29e39d7d9098e73d01
https://hal.archives-ouvertes.fr/hal-02944845/file/PolatkanPRL20.pdf

Two-Dimensional Conical Dispersion in ZrTe5 Evidenced by Optical Spectroscopy

Autor: Edoardo Martino, G. Eguchi, Milan Orlita, I. Crassee, Zoran Rukelj, Helmuth Berger, Ruidan Zhong, Ana Akrap, D. Santos-Cottin, Christopher C. Homes, G. D. Gu

Publikováno v: Physical Review Letters. 122

Zirconium pentatelluride was recently reported to be a 3D Dirac semimetal, with a single conical band, located at the center of the Brillouin zone. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9679c33335964237f951da690c7de9ca
https://doi.org/10.1103/physrevlett.122.217402