Publications related to CDW and Similarity of the Mott Insulator-to-Metal Transition in Cuprates with the Gas-to-Liquid-Liquid Transition in Supercooled Water

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

Here, we show that in several p-type cuprates, the superconductor-to-insulator transition (SIT) occurs at the critical sheet resistance approximately equal to the quantum resistance of pairs, RQ=h/4

e^{2}

=6.5 kΩ. In a relatively broad range of temperature ...

Springer Verlag2013

Thermopower as a Unique Tool to Probe Quantum Phase Transitions

Stevan Arsenijevic

In my thesis, transport measurements such as resistivity and, more importantly, thermopower S, were used to explore the phase diagram of bad metals. Bad metals are electronically correlated systems whose ground state lies close to a quantum phase transitio ...

EPFL2012

Electronic and Magnetic Resonant Inelastic X-ray Study of Cuprates

Marco Guarise

More than twenty five years have passed since the discovery of the first copper oxide based superconductor La2-xBaxCuO4 in 1986, and the intriguing physics of cuprates superconductors continues to fascinate and challenge scientists from all over the world. ...

EPFL2012

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67

Joël Mesot, Johan Juul Chang

Superconductivity often emerges in the proximity of, or in competition with, symmetry-breaking ground states such as antiferromagnetism or charge density waves(1-5) (CDW). A number of materials in the cuprate family, which includes the high transition-temp ...

Nature Publishing Group2012

Unified one-band Hubbard model for magnetic and electronic spectra of the parent compounds of cuprate superconductors

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

Using low-energy projection of the one-band t-t′-t′′ Hubbard model we derive an effective spin Hamiltonian and its spin-wave expansion to order 1/S. We fit the spin-wave dispersion of several parent compounds to the high-temperature superconducting cuprate ...

American Physical Society2012

Tunneling conductivity in composites of attractive colloids

Peter Ryser, Claudio Grimaldi, Biagio Nigro

In conductor-insulator nanocomposites in which conducting fillers are dispersed in an insulating matrix, the electrical connectedness is established by inter-particle tunneling or hopping processes. These systems are intrinsically non-percolative and a coh ...

American Institute of Physics2012

Bulk Electronic Structure of Superconducting LaRu2P2 Single Crystals Measured by Soft-X-Ray Angle-Resolved Photoemission Spectroscopy

Thorsten Schmitt, Joël Mesot, Johan Juul Chang, Janusz Andrzej Karpinski, Elia Razzoli

We present a soft x-ray angle-resolved photoemission spectroscopy (SX-ARPES) study of the stoichiometric pnictide superconductor LaRu2P2. The observed electronic structure is in good agreement with density functional theory (DFT) calculations. However, it ...

2012

Mapping of Electron-Hole Excitations in the Charge-Density-Wave System 1T-TiSe2 Using Resonant Inelastic X-Ray Scattering

Thorsten Schmitt, Helmuth Berger, Philipp Aebi

In high-resolution resonant inelastic x-ray scattering at the Ti L edge of the charge-density-wave system 1T-TiSe2, we observe sharp low energy loss peaks from electron-hole pair excitations developing at low temperature. These excitations are strongly dis ...

2012

Superconductor–insulator transition in La2 − xSrxCuO4 at the pair quantum resistance

Davor Pavuna, Guy Joseph Günter Dubuis, Ivan Bozovic

High-temperature superconductivity in copper oxides arises when a parent insulator compound is doped beyond some critical concentration; what exactly happens at this superconductor–insulator transition is a key open question1. The cleanest approach is to t ...

2011

Spectroscopic Studies on Iron-Chalcogenide Superconductors

Ping-Hui Lin

Superconductivity in F-doped LaFeAsO, Tc= 26 K was first reported by Kamihara et al in 2008. Following that, more iron-based superconductors, e.g., (Ba,K)Fe2As2, LiFeAs, and Fe1+yTe1-xSex were discovered. The new class of high Tc superconductors have attra ...

EPFL2011

CDW and Similarity of the Mott Insulator-to-Metal Transition in Cuprates with the Gas-to-Liquid-Liquid Transition in Supercooled Water

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Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Thermopower as a Unique Tool to Probe Quantum Phase Transitions

Electronic and Magnetic Resonant Inelastic X-ray Study of Cuprates

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67

Unified one-band Hubbard model for magnetic and electronic spectra of the parent compounds of cuprate superconductors

Tunneling conductivity in composites of attractive colloids

Bulk Electronic Structure of Superconducting LaRu2P2 Single Crystals Measured by Soft-X-Ray Angle-Resolved Photoemission Spectroscopy

Mapping of Electron-Hole Excitations in the Charge-Density-Wave System 1T-TiSe2 Using Resonant Inelastic X-Ray Scattering

Superconductor–insulator transition in La2 − xSrxCuO4 at the pair quantum resistance

Spectroscopic Studies on Iron-Chalcogenide Superconductors

Thermopower as a Unique Tool to Probe Quantum Phase Transitions

Unified one-band Hubbard model for magnetic and electronic spectra of the parent compounds of cuprate superconductors

Electronic and Magnetic Resonant Inelastic X-ray Study of Cuprates

Bulk Electronic Structure of Superconducting LaRu2P2 Single Crystals Measured by Soft-X-Ray Angle-Resolved Photoemission Spectroscopy

Superconductor–insulator transition in La2 − xSrxCuO4 at the pair quantum resistance

Spectroscopic Studies on Iron-Chalcogenide Superconductors

Mapping of Electron-Hole Excitations in the Charge-Density-Wave System 1T-TiSe2 Using Resonant Inelastic X-Ray Scattering

Critical Resistance at the Superconductor-Insulator Transition in Hole-Doped Cuprates

Direct observation of competition between superconductivity and charge density wave order in YBa2Cu3O6.67

Tunneling conductivity in composites of attractive colloids