Publications related to Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

The adaptive interpolation method for proving replica formulas. Applications to the Curie-Weiss and Wigner spike models

Nicolas Macris, Jean François Emmanuel Barbier

In this contribution we give a pedagogic introduction to the newly introduced adaptive interpolation method to prove in a simple and unified way replica formulas for Bayesian optimal inference problems. Many aspects of this method can already be explained ...

IOP PUBLISHING LTD2019

Ultrafast Broadband Fluorescence Up-conversion Study of the Electronic Relaxation of Metalloporphyrins

Majed Chergui, Andrea Cannizzo, Olivier Christian Bräm

We present a systematic study of the ultrafast fluorescence with broadband detection and similar to 110 fs resolution of 5,10,15,20-tetraphenylporphin (TPP) and 2,3,7,8,12,13,17,18-oc-taethylporphin (OEP), with open 3d-shell metals. We also revisit the cas ...

AMER CHEMICAL SOC2019

Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6

Philip Pattison

We report on the coexistence of magnetic order and disorder in the atomically disordered double perovskites Ca2FeRuO6 and CaSrFeRuO6. Powder x-ray and neutron diffraction were used to investigate the crystal structure and magnetic ordering of these oxides. ...

AMER PHYSICAL SOC2018

Observation of two independent skyrmion phases in a chiral magnetic material

Helmuth Berger

Magnetic materials can host skyrmions, which are topologically non-trivial spin textures. In chiral magnets with cubic lattice symmetry, all previously observed skyrmion phases require thermal fluctuations to become thermodynamically stable in bulk materia ...

2018

Magnetic phase diagram of Ca-substituted EuFe2As2

The simultaneous presence of an Fe-related spin-density wave and the antiferromagnetic order of Eu-2(+) moments ranks EuFe2As2 among the most interesting parent compounds of iron-based pnictide superconductors. Here we explore the consequences of the dilut ...

AMER PHYSICAL SOC2018

Negative-pressure-induced helimagnetism in ferromagnetic cubic perovskites Sr1-xBaxCoO3

Henrik Moodysson Rønnow, Jonathan White

Helimagnetic materials are identified as promising for novel spintronic applications. Since helical spin order is manifested as a compromise of competing magnetic exchange interactions, its emergence is limited by unique constraints imposed by the crystall ...

AMER PHYSICAL SOC2018

Dirac nodal lines and flat-band surface state in the functional oxide RuO2

Arnaud Magrez, Helmuth Berger, Philippe Bugnon, Simon Karl Moser

The efficiency and stability of RuO2 in electrocatalysis has made this material a subject of intense fundamental and industrial interest. The surface functionality is rooted in its electronic and magnetic properties, determined by a complex interplay of la ...

AMER PHYSICAL SOC2018

New Insights into the Verwey Transition in Magnetite

Simone Borroni

Magnetite (Fe

_3

O

_4

) is the first magnetic material discovered by mankind. Despite thousands of years of applications, from the magnetic compass to data storage, and decades of basic research, it remains among the most fascinating materials for physicis ...

EPFL2018

Kondo lattice excitation observed using resonant inelastic x-ray scattering at the YbM5 edge

Marco Grioni, Thorsten Schmitt, Marco Guarise

We present a study of the resonant inelastic scattering response of YbInCu4 excited at the tender YbM5 x-ray edge. In the high-temperature, paramagnetic phase, we observe a multiplet structure which can be understood at an ionic level. Upon cooling through ...

AMER PHYSICAL SOC2018

Sr2Pt8−x As: a layered incommensurately modulated metal with saturated resistivity

László Forró, Oleg Yazyev, Alla Arakcheeva, Philip Johannes Walter Moll, Gabriel Albert Autes, Andrea Pisoni, Sergiy Katrych, Maja Deborah Bachmann, Edoardo Martino

The high-pressure synthesis and incommensurately modulated structure are reported for the new compound Sr2Pt8-xAs, with x = 0.715 (5). The structure consists of Sr2Pt3 As layers alternating with Pt-only corrugated grids. Ab initio calculations predict a me ...

2018

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

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The adaptive interpolation method for proving replica formulas. Applications to the Curie-Weiss and Wigner spike models

Ultrafast Broadband Fluorescence Up-conversion Study of the Electronic Relaxation of Metalloporphyrins

Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6

Observation of two independent skyrmion phases in a chiral magnetic material

Magnetic phase diagram of Ca-substituted EuFe2As2

Negative-pressure-induced helimagnetism in ferromagnetic cubic perovskites Sr1-xBaxCoO3

Dirac nodal lines and flat-band surface state in the functional oxide RuO2

New Insights into the Verwey Transition in Magnetite

Kondo lattice excitation observed using resonant inelastic x-ray scattering at the YbM5 edge

Sr2Pt8−x As: a layered incommensurately modulated metal with saturated resistivity

The adaptive interpolation method for proving replica formulas. Applications to the Curie-Weiss and Wigner spike models

Magnetic phase diagram of Ca-substituted EuFe2As2

Observation of two independent skyrmion phases in a chiral magnetic material

Negative-pressure-induced helimagnetism in ferromagnetic cubic perovskites Sr1-xBaxCoO3

Kondo lattice excitation observed using resonant inelastic x-ray scattering at the YbM5 edge

Ultrafast Broadband Fluorescence Up-conversion Study of the Electronic Relaxation of Metalloporphyrins

Reentrant magnetism at the borderline between long-range antiferromagnetic order and spin-glass behavior in the B-site disordered perovskite system Ca2-x SrxFeRuO6

Dirac nodal lines and flat-band surface state in the functional oxide RuO2

New Insights into the Verwey Transition in Magnetite

Sr2Pt8−x As: a layered incommensurately modulated metal with saturated resistivity