Publications related to Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

Magnetic and thermodynamic properties of CuxTiSe2 single crystals

We present a detailed study of the phase diagram of copper-intercalated TiSe2 single crystals, combining local Hall-probe magnetometry, tunnel diode oscillator technique (TDO), and specific-heat and angle-resolved photoemission spectroscopy measurements. A ...

Amer Physical Soc2017

Pressure-tuned Transport Properties of Novel Iron-based Superconductors and Topological Insulators

Andrea Pisoni

The majority of interactions in solids strongly depend on the interatomic distances. The application of pressure changes the lattice parameters and modifies the electronic and the phononic energy spectra of a material avoiding some of the undesirable effec ...

EPFL2016

Spin-fluctuation mediated superconductivity and magnetic order in the cuprate La1.88Sr0.12CuO4

High-temperature superconductivity in cuprates emerges as one out of many electronic phases when doping the antiferromagnetic Mott insulator La2CuO4 away from half lling. The description of the superconducting phase is therefore complicated by intertwined ...

University of Copenhagen2015

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Henrik Moodysson Rønnow

The magnetic critical scattering in Sr2IrO4 has been characterized using x-ray resonant magnetic scattering (XRMS) both below and above the three-dimensional antiferromagnetic ordering temperature T-N. The order parameter critical exponent below TN is foun ...

2015

Dynamical structure factors and excitation modes of the bilayer Heisenberg model

Frédéric Mila, Tommaso Coletta

Using quantum Monte Carlo simulations along with higher-order spin-wave theory, bond-operator and strong-coupling expansions, we analyze the dynamical spin structure factor of the spin-half Heisenberg model on the square-lattice bilayer. We identify distin ...

2015

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

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

Janusz Andrzej Karpinski, Sergiy Katrych, Yihan Jia

Iron-based superconductors could be useful for electricity distribution and superconducting magnet applications because of their relatively high critical current densities and upper critical fields. SmFeAsO0.8F0.15 is of particular interest as it has the h ...

Nature Publishing Group2013

Theory of superconductivity in a three-orbital model of Sr2RuO4

Ronny Thomale, Yong Yang

In conventional and high transition temperature copper oxide and iron pnictide superconductors, the Cooper pairs all have even parity. As a rare exception, Sr2RuO4 is the first prime candidate for topological chiral p-wave superconductivity, which has time ...

Epl Association, European Physical Society2013

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

Pr4Fe2As2Te1-xO4: A layered FeAs-based superconductor

László Forró, Richard Gaal, Janusz Andrzej Karpinski, Andrea Pisoni, Sergiy Katrych

We report crystal growth at high pressure, structure determination, and magnetic and transport studies of an oxypnictide superconductor Pr4Fe2As2Te1-xO4. Its structure resembles the known 1111 phase except for the considerably larger c lattice constant and ...

Amer Physical Soc2013

Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2

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Magnetic and thermodynamic properties of CuxTiSe2 single crystals

Pressure-tuned Transport Properties of Novel Iron-based Superconductors and Topological Insulators

Spin-fluctuation mediated superconductivity and magnetic order in the cuprate La1.88Sr0.12CuO4

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Dynamical structure factors and excitation modes of the bilayer Heisenberg model

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

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

Theory of superconductivity in a three-orbital model of Sr2RuO4

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

Pr4Fe2As2Te1-xO4: A layered FeAs-based superconductor

Magnetic and thermodynamic properties of CuxTiSe2 single crystals

Spin-fluctuation mediated superconductivity and magnetic order in the cuprate La1.88Sr0.12CuO4

Pressure-tuned Transport Properties of Novel Iron-based Superconductors and Topological Insulators

Importance of XY anisotropy in Sr2IrO4 revealed by magnetic critical scattering experiments

Theory of superconductivity in a three-orbital model of Sr2RuO4

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

Dynamical structure factors and excitation modes of the bilayer Heisenberg model

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

Huge critical current density and tailored superconducting anisotropy in SmFeAsO0.8F0.15 by low-density columnar-defect incorporation

Pr4Fe2As2Te1-xO4: A layered FeAs-based superconductor