Publication
Temperature-Dependence of the Superconducting Gap Anisotropy in Bi2Sr2CaCu2O8+X
Publications associées (32)
Model for superconductivity at any temperature
Yannis Burnier, Eray Sabancilar
We construct a 2 + 1 dimensional model that sustains superconductivity at all temperatures. This is achieved by introducing a Chern-Simons mixing term between two Abelian gauge fields A and Z. The superfluid is described by a complex scalar charged under Z ...
Amer Physical Soc2016Two-dimensional Magnetism in kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Cl, a Spin-1/2 Heisenberg Antiferromagnet with Dzyaloshinskii-Moriya Interaction
László Forró, Bálint Náfrádi, Agnes Antal
The finite phase transition temperature, T-N, of quasi two-dimensional (2D) Heisenberg antiferromagnetic (AF) crystals results from in-plane anisotropy or coupling between layers. It is usually not known which is the determining factor when both are weak. ...
Physical Soc Japan2015Spin-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 Copenhagen2015Asymmetry 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 ...
2014Glassy low-energy spin fluctuations and anisotropy gap in La_{1.88}Sr_{0.12}CuO_{4}
Joël Mesot, Johan Juul Chang, Christopher Werner Matthias Robeller
We present high-resolution triple-axis neutron scattering studies of the high-temperature superconductor La1.88Sr0.12CuO4 (T-c = 27 K). The temperature dependence of the low-energy incommensurate magnetic fluctuations reveals distinctly glassy features. Th ...
Amer Physical Soc2013Signatures of quantum criticality in the thermopower of Ba(Fe1-xCox)(2)As-2
László Forró, Richard Gaal, Stevan Arsenijevic
We demonstrate that the thermopower (S) can be used to probe the spin fluctuations (SFs) in proximity to the quantum critical point (QCP) in Fe-based superconductors. The sensitivity of S to the entropy of charge carriers allows us to observe an increase o ...
Amer Physical Soc2013Glassy low-energy spin fluctuations and anisotropy gap in La1.88Sr0.12CuO4
Henrik Moodysson Rønnow, Joël Mesot, Johan Juul Chang
We present high-resolution triple-axis neutron scattering studies of the high-temperature superconductor La1.88Sr0.12CuO4 (Tc=27 K). The temperature dependence of the low-energy incommensurate magnetic fluctuations reveals distinctly glassy features. The g ...
American Physical Society2013Opening of the superconducting gap in the hole pockets of Ba(Fe1-xCox)(2)As-2 as seen via angle-resolved photoelectron spectroscopy
We present an angle-resolved photoelectron spectroscopy study of the changes in the electronic structure of electron-doped Ba(Fe1-xCox)(2)As-2 across the superconducting phase transition. By changing the polarization of the incoming light, we were able to ...
2012ARPES Studies of Cuprate and Pnictide Superconductors
Since the discovery of cuprate superconductors in 1986, the subject of high temperature superconductivity has triggered a lot of scientific activity. Despite enormous efforts, the origin of high-temperature superconductivity is still the subject of intense ...
EPFL2012Quench analysis of a high-current forced-flow HTS conductor model for fusion magnets
A fundamental understanding of the quench phenomenon is particularly important in the design and operation of magnets using High Temperature Superconductors because the quench propagation velocity is low due to high specific heat at high temperature. We ha ...
2011