Publications related to Spectroscopic Studies of the Electronic Structure in Layered Cuprates and Ruthenates

Spin dynamics from time-dependent density functional perturbation theory

We present a new method to model spin-wave excitations in magnetic solids, based on the Liouville-Lanczos approach to time-dependent density functional perturbation theory. This method avoids computationally expensive sums over empty states and naturally d ...

SPRINGER2018

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

Lattice, spin and orbital excitations in selected transition metal oxides

Sara Fatale

Transition metal compounds represent a unique class of solids characterized by a surprising richness of physical properties. They display many phenomena and represent the main area of interest for the research on strongly correlated materials. Many novel i ...

EPFL2017

Electronic Phase Separation and Dramatic Inverse Band Renormalization in the Mixed-Valence Cuprate LiCu2O2

Marco Grioni, Arnaud Magrez, Helmuth Berger, Philippe Bugnon, Luca Moreschini, Simon Karl Moser, Gianmarco Gatti

We measured, by angle-resolved photoemission spectroscopy, the electronic structure of LiCu2O2, a mixed-valence cuprate where planes of Cu(I) (3d(10)) ions are sandwiched between layers containing one-dimensional edge-sharing Cu(II) (3d(9)) chains. We find ...

Amer Physical Soc2017

High-energy electronic interaction in the 3d band of high-temperature iron-based superconductors

Maryna Viazovska, Helmuth Berger

One of the most unique and robust experimental facts about iron-based superconductors is the renormalization of the electronic band dispersion by factor of 3 and more near the Fermi level. Obviously related to the electron pairing, this prominent deviation ...

Amer Physical Soc2017

Hallmarks of Hunds coupling in the Mott insulator Ca2RuO4

Henrik Moodysson Rønnow, Marco Grioni, Johan Juul Chang, Simon Karl Moser, Gianmarco Gatti, Claudia Giuseppina Fatuzzo

A paradigmatic case of multi-band Mott physics including spin-orbit and Hund's coupling is realized in Ca2RuO4. Progress in understanding the nature of this Mott insulating phase has been impeded by the lack of knowledge about the low-energy electronic str ...

2017

Adsorption Sites of Metal Atoms on MgO Thin Films and Rotational Quantum State Spectroscopy of Physisorbed H₂

Edgar Fernandes

The work presented in this thesis covers two different topics of surface science, both investigated with the scanning tunneling miscroscopy and spectroscopy at low temperatures (5~K). First, we are interested in the spectroscopic properties of physisorbed ...

EPFL2017

Inducing superconductivity in Weyl semimetal microstructures by selective ion sputtering

Philip Johannes Walter Moll, Maja Deborah Bachmann

By introducing a superconducting gap in Weyl or Dirac semimetals, the superconducting state inherits the nontrivial topology of their electronic structure. As a result, Weyl superconductors are expected to host exotic phenomena, such as nonzero-momentum pa ...

2017

Numerically exploring the 1D-2D dimensional crossover on spin dynamics in the doped Hubbard model

Frédéric Mila

Using determinant quantum Monte Carlo (DQMC) simulations, we systematically study the doping dependence of the crossover from one to two dimensions and its impact on the magnetic properties of the Hubbard model. A square lattice of chains is used, in which ...

2017

Spectroscopic Studies of the Electronic Structure in Layered Cuprates and Ruthenates

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Spin dynamics from time-dependent density functional perturbation theory

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)

Lattice, spin and orbital excitations in selected transition metal oxides

Electronic Phase Separation and Dramatic Inverse Band Renormalization in the Mixed-Valence Cuprate LiCu2O2

High-energy electronic interaction in the 3d band of high-temperature iron-based superconductors

Hallmarks of Hunds coupling in the Mott insulator Ca2RuO4

Adsorption Sites of Metal Atoms on MgO Thin Films and Rotational Quantum State Spectroscopy of Physisorbed H₂

Inducing superconductivity in Weyl semimetal microstructures by selective ion sputtering

Numerically exploring the 1D-2D dimensional crossover on spin dynamics in the doped Hubbard model

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

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

High-energy electronic interaction in the 3d band of high-temperature iron-based superconductors

Spin dynamics from time-dependent density functional perturbation theory

Electronic Phase Separation and Dramatic Inverse Band Renormalization in the Mixed-Valence Cuprate LiCu2O2

Lattice, spin and orbital excitations in selected transition metal oxides

Hallmarks of Hunds coupling in the Mott insulator Ca2RuO4

Adsorption Sites of Metal Atoms on MgO Thin Films and Rotational Quantum State Spectroscopy of Physisorbed H₂

Inducing superconductivity in Weyl semimetal microstructures by selective ion sputtering

Numerically exploring the 1D-2D dimensional crossover on spin dynamics in the doped Hubbard model