Publications related to Non-Zhang-Rice Singlet Character of the First Ionization State of T-CuO

Spectroscopic Studies of the Electronic Structure in Layered Cuprates and Ruthenates

In materials where electrons interact strongly, a number of exotic and exciting phenomena arise. The mechanisms at the base of many of these phenomena remain debated, as strongly correlated electron physics represents one of the biggest challenges for mode ...

EPFL2017

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl

Helmuth Berger

We report a single-crystal neutron diffraction and inelastic neutron scattering study on the spin 1/2 cuprate Cu3Bi(SeO3)(2)O2Cl, complemented by dielectric and electric polarization measurements. The study clarifies a number of open issues concerning this ...

Amer Physical Soc2017

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

Lin Yang

In this thesis I study the synthesis and basic physical properties characterization on 3

d

, 4

d

and 5

d

transition metal compounds. Great success has been obtained in 3

d

transition metal compounds, in which the electric states are well localized due t ...

EPFL2017

Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)

Diane Virginie Marie Lançon

Collective magnetic excitations are a fascinating aspect of condensed matter physics, where neutron scattering can provide valuable insight into the magnetic properties of physical realisations of model systems. This thesis focuses on the excitation spectr ...

EPFL2017

Fractional excitations in the square-lattice quantum antiferromagnet

Henrik Moodysson Rønnow, Dmitri Ivanov, Bastien Dalla Piazza, Goran Nilsen, Martin Mourigal, Mechthild Enderle

Quantum magnets have occupied the fertile ground between many-body theory and low-temperature experiments on real materials since the early days of quantum mechanics. However, our understanding of even deceptively simple systems of interacting spin-1/2 par ...

Nature Publishing Group2015

Theories of Experimentally Observed Excitation Spectra of Square Lattice Antiferromagnets

Bastien Dalla Piazza

The first part of this thesis presents the theoretical study of an anomaly of unknown origin in the excitation spectrum of the Quantumspin-1/2 Heisenberg Square lattice Anti-Ferromagnet. The anomaly manifests itself in Inelastic Neutron Scattering data for ...

EPFL2014

Anisotropic softening of magnetic excitations along the nodal direction in superconducting cuprates

Henrik Moodysson Rønnow, Marco Grioni, Thorsten Schmitt, Helmuth Berger, Marco Guarise, Bastien Dalla Piazza

The high-T-c cuprate superconductors are close to antiferromagnetic order. Recent measurements of magnetic excitations have reported an intriguing similarity to the spin wavesmagnons- of the antiferromagnetic insulating parent compounds, suggesting that ma ...

Nature Publishing Group2014

The nature of the quasiparticles in two benchmark transition metal oxides

Simon Karl Moser

Transition metal oxides (TMOs) are emerging strong players in many domains, ranging from superconductivity, to microelectronics to spintronics to light harvesting for photovoltaics. Beyond their non-toxicity, low corrosiveness and low price, they exhibit a ...

EPFL2014

Asymmetry of collective excitations in electron- and hole-doped cuprate superconductors

Sandrine Gerber, Thorsten Schmitt, Gang Yu

High-temperature superconductivity emerges on doping holes or electrons into antiferromagnetic copper oxides. The large energy scale of magnetic excitations, for example, compared with phonon energies, is thought to drive superconductivity with high transi ...

2014

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

Henrik Moodysson Rønnow, Marco Grioni, Joël Mesot, Johan Juul Chang, Martin Mansson, Claudia Giuseppina Fatuzzo

Nodal angle-resolved photoemission spectra taken on overdoped La1.77Sr0.23CuO4 are presented and analyzed. It is proven that the low-energy excitations are true Landau Fermi-liquid quasiparticles. We show that momentum and energy distribution curves can be ...

Amer Physical Soc2014

Non-Zhang-Rice Singlet Character of the First Ionization State of T-CuO

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Spectroscopic Studies of the Electronic Structure in Layered Cuprates and Ruthenates

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl

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

Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)

Fractional excitations in the square-lattice quantum antiferromagnet

Theories of Experimentally Observed Excitation Spectra of Square Lattice Antiferromagnets

Anisotropic softening of magnetic excitations along the nodal direction in superconducting cuprates

The nature of the quasiparticles in two benchmark transition metal oxides

Asymmetry of collective excitations in electron- and hole-doped cuprate superconductors

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4

Spectroscopic Studies of the Electronic Structure in Layered Cuprates and Ruthenates

Theories of Experimentally Observed Excitation Spectra of Square Lattice Antiferromagnets

The nature of the quasiparticles in two benchmark transition metal oxides

Magnetic and dielectric order in the kagomelike francisite Cu3Bi(SeO3)(2)O2Cl

Fractional excitations in the square-lattice quantum antiferromagnet

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

Anisotropic softening of magnetic excitations along the nodal direction in superconducting cuprates

Asymmetry of collective excitations in electron- and hole-doped cuprate superconductors

Neutron spectroscopy in the layered quantum magnet SrCu₂(BO₃)₂ and in transition metal phosphorus trisulfides (MPS₃)

Nodal Landau Fermi-liquid quasiparticles in overdoped La1.77Sr0.23CuO4