-SCI Highlights
26 10, 2020

BEYOND THE CONICAL BAND APPROXIMATION OF A WEYL SEMIMETAL

By | 2020-10-26T11:04:21+00:00 October 26th, 2020|SCI Highlights|0 Comments

A. Akrap, University of Fribourg, A. V. Pronin, Universität Stuttgart, and M. Orlita, LNCMI-Grenoble.  Experiments have demonstrated many gapless electronic phases with conical bands. These phases exist within diverse classes of systems comprising graphene and many different topological materials. Low-energy excitations in such conical bands somewhat resemble truly relativistic [...]

26 10, 2020

RECONSTRUCTED FERMI SURFACE IN THE CHARGE-DENSITY-WAVE STATE OF TiSe2

By | 2020-10-27T08:35:45+00:00 October 26th, 2020|SCI Highlights|0 Comments

Owen Moulding and Sven Friedemann, University of Bristol.  TiSe2 features a charge density wave (CDW) driven by condensation of excitons, i.e., pairs of electrons and holes, alongside electronphonon coupling. The CDW transition at 202 K gaps out most of the Fermi surface. Quantum-oscillation measurements at the HFML Nijmegen provide [...]

23 06, 2020

ORIGIN OF THE LARGE UPPER CRITICAL FIELD OF A STOICHIOMETRIC IRON-BASED SUPERCONDUCTOR, CaKFe4As4

By | 2020-07-13T10:47:38+00:00 June 23rd, 2020|SCI Highlights|0 Comments

Matthew Bristow, Amalia Coldea, University of Oxford and William Knafo, LNCMI-Toulouse. CaKFe4As4 belongs to a new family of 1144 iron-based superconductors. It is a clean and stoichiometric superconductor with a relatively high critical temperature of 35 K. This system lacks long-range magnetic order or a nematic electronic state at [...]

23 06, 2020

EVIDENCE FOR AN EXOTIC HIGH-FIELD SUPERCONDUCTING STATE IN FeSe

By | 2020-07-13T10:55:49+00:00 June 23rd, 2020|SCI Highlights|0 Comments

S. Kasahara, Kyoto University, N. Hussey, HFML Nijmegen, and J. Wosnitza, HLD Dresden. Superconductivity is destroyed at high magnetic fields. Usually, the highest field up to which this state can exist is the Pauli paramagnetic limit, when the Zeeman energy of the itinerant electrons becomes larger than the superconducting [...]

23 06, 2020

SCAFFOLD-FREE AND LABEL-FREE BIOFABRICATION TECHNOLOGY USING LEVITATIONAL ASSEMBLY IN HIGH MAGNETIC FIELD

By | 2020-06-23T08:55:47+00:00 June 23rd, 2020|SCI Highlights|0 Comments

Hans Engelkamp and Peter Christianen, HFML Nijmegen. This research shows that magnetic levitational bioassembly with a non-toxic, low concentration of a paramagnetic medium in high magnetic field is technologically feasible. Moreover, the experimental results confirm that it can be used as a cost-effective alternative to microgravity research at the [...]

13 05, 2020

FERMI-SURFACE INSTABILITIES IN THE HEAVY-FERMION SUPERCONDUCTOR UTe2

By | 2020-05-13T13:07:31+00:00 May 13th, 2020|SCI Highlights|0 Comments

Alexandre Pourret, CEA Grenoble and Gabriel Seyfarth, LNCMI-Grenoble. The recently discovered heavy-fermion superconductor UTe2 with superconducting transition temperature of 1.6 K is one of the rare examples of a heavy-fermion material with superconductivity appearing above 1 K. In contrast to the ferromagnetic heavy-fermion superconductors UCoGe and URhGe, UTe2 is [...]

16 03, 2020

LOCALIZED VERSUS DELOCALIZED 5f ELECTRONS IN ANTIFERROMAGNETIC U2Rh2Sn

By | 2020-03-16T14:36:26+00:00 March 16th, 2020|SCI Highlights|0 Comments

Denis Gorbunov, HLD Dresden. The physical properties of uranium-based intermetallic compounds depend strongly on the degree of localization of the 5f electrons. The extended character of the 5f states leads to a high sensitivity to external parameters. The pronounced spin-orbit interaction of uranium provides significant orbital polarization of the [...]

16 03, 2020

APERIODIC QUANTUM OSCILLATIONS IN THE TWO-DIMENSIONAL ELECTRON GAS AT THE LaAlO3/SrTiO3 INTERFACE

By | 2020-03-16T13:19:03+00:00 March 16th, 2020|SCI Highlights|0 Comments

Walter Escoffier, Michel Goiran, LNCMI Toulouse and Km Rubi, HFML Nijmegen. The discovery of a two-dimensional electron gas (2DEG) at the interface between the two insulators LaAlO3 (LAO) and SrTiO3 (STO) has not only enhanced the expectations of oxide-electronics but has also brought new and exciting opportunities to explore [...]

11 03, 2020

NMR STUDY OF CHARGE-DENSITY WAVES UNDER HYDROSTATIC PRESSURE IN YBa2Cu3Oy

By | 2020-03-11T12:55:14+00:00 March 11th, 2020|SCI Highlights|0 Comments

Igor Vinograd and Marc-Henri Julien, LNCMI-Grenoble. High-temperature superconductivity in the cuprates arises in close proximity to a charge density wave (CDW) phase. A challenge in the field is to understand how both phenomena compete and whether, behind pure competition, there is a more involved relationship between them. To tackle [...]

11 03, 2020

THREADING FLUX THROUGH HELIXES

By | 2020-03-11T12:11:17+00:00 March 11th, 2020|SCI Highlights|0 Comments

Rosa Córdoba, ICMol and Uli Zeitler, HFML Nijmegen. The fabrication and understanding of complex three-dimensional (3D) architectures on the nanoscale is one of the promising routes towards new schemes for a next generation of advanced electronic devices. This endeavor requires advanced new processing technologies, state-of-the-art structural and electronic characterization [...]

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