526 citations · 1.8k across the 20 of their papers we have counts for
20 papers
Density wave instabilities and surface state evolution in interacting Weyl semimetals
Manuel Laubach, Christian Platt, Ronny Thomale +2
We investigate the interplay of many-body and band structure effects of interacting Weyl semimetals (WSM). Attractive and repulsive Hubbard interactions are studied within a model…
Evolution of superconducting gap anisotropy in hole-doped 122 iron pnictides
Christian Platt, Gang Li, Mario Fink +2
Motivated by recent experimental findings, we investigate the evolution of the superconducting gap anisotropy in 122 iron pnictides as a function of hole doping. Employing both a f…
Spin-orbit coupling and odd-parity superconductivity in the quasi-one-dimensional compound LiMoO
Christian Platt, Weejee Cho, Ross H. McKenzie +2
Previous theoretical studies [W. Cho, C. Platt, R. H. McKenzie, and S. Raghu, Phys. Rev. B 92, 134514 (2015); N. Lera and J. V. Alvarez, Phys. Rev. B 92, 174523 (2015)] have sugges…
Spin-triplet superconductivity in a weak-coupling Hubbard model for the quasi-one-dimensional compound LiMoO
Weejee Cho, Christian Platt, Ross H. McKenzie +1
The purple bronze LiMoO is of interest due to its quasi-one-dimensional electronic structure and the possible Luttinger liquid behavior resulting from it. For su…
Accessing topological superconductivity via a combined STM and renormalization group analysis
Lars Elster, Christian Platt, Ronny Thomale +2
The search for topological superconductors has recently become a key issue in condensed matter physics, because of their possible relevance to provide a platform for Majorana bound…
Phase diagram of the Hubbard model on the anisotropic triangular lattice
Manuel Laubach, Ronny Thomale, Christian Platt +2
We investigate the Hubbard model on the anisotropic triangular lattice as a suggested effective description of the Mott phase in various triangular organic compounds. Employing the…
Chiral -wave Superconductivity in SrPtAs
Mark H. Fischer, Titus Neupert, Christian Platt +5
Recent SR measurements on SrPtAs revealed time-reversal-symmetry breaking with the onset of superconductivity [Biswas et al., Phys. Rev. B 87, 180503(R) (2013)], suggesting an u…
Theory of superconductivity in a three-orbital model of SrRuO
Q. -H. Wang, C. Platt, Y. Yang +5
In conventional and high transition temperature copper oxide and iron pnictide superconductors, the Cooper pairs all have even parity. As a rare exception, SrRuO is the fir…
Renormalization group analysis of competing quantum phases in the J1-J2 Heisenberg model on the kagome lattice
Raik Suttner, Christian Platt, Johannes Reuther +1
Recent discoveries in neutron scattering experiments for Kapellasite and Herbertsmithite as well as theoretical calculations of possible spin liquid phases have revived interest in…
Anisotropic chiral d+id superconductivity in NaxCoO2 yH2O
Maximilian Kiesel, Christian Platt, Werner Hanke +1
Since its discovery, the superconducting phase in water-intercalated sodium cobaltates NaxCoO2 yH2O (x~0.3, y~1.3) has posed fundamental challenges in terms of experimental investi…
Unconventional Fermi surface instabilities in the Kagome Hubbard Model
Maximilian L. Kiesel, Christian Platt, Ronny Thomale
We investigate the competing Fermi surface instabilities in the Kagome tight-binding model. Specifically, we consider onsite and short-range Hubbard interactions in the vicinity of…
Deviating band symmetries and many-body interactions in a model hole doped iron pnictide superconductor
L. A. Wray, R. Thomale, C. Platt +6
We present a polarization resolved study of the low energy band structure in the optimally doped iron pnictide superconductor BaKFeAs (T=37K) using angl…
Competing many-body instabilities and unconventional superconductivity in graphene
Maximilian Kiesel, Christian Platt, Werner Hanke +2
The band structure of graphene exhibits van Hove singularities (VHS) at doping x=+- 1/8 away from the Dirac point. Near the VHS, interactions effects, enhanced due to the large den…
Mechanism for a Pairing State with Time-Reversal Symmetry Breaking in Iron-Based Superconductors
Christian Platt, Ronny Thomale, Carsten Honerkamp +2
The multipocket Fermi surfaces of iron-based superconductors promote pairing states with both s_{+-}-wave and d_{x^2-y^2}-wave symmetry. We argue that the competition between these…
From density functional theory to the functional renormalization group: superconductivity in the iron pnictide LiFeAs
Christian Platt, Ronny Thomale, Werner Hanke
A combined density functional theory and functional renormalization group method is introduced which takes into account orbital-dependent interaction parameters to derive the effec…
Exotic d-wave superconductivity in strongly hole doped K(x)Ba(1-x)Fe2As2
Ronny Thomale, Christian Platt, Werner Hanke +2
We investigate the superconducting phase in the K(x)Ba(1-x)Fe2As2 122 compounds from moderate to strong hole-doping regimes. Using functional renormalization group, we show that wh…
Order-Parameter Anisotropies in the Pnictides - An Optimization Principle for Multi-Band Superconductivity
Christian Platt, Ronny Thomale, Werner Hanke
Using general arguments of an optimization taking place between the pair wave function and the repulsive part of the electron-electron interaction, we analyze the superconducting g…
Why some Iron-based superconductors are nodal while others are nodeless
Ronny Thomale, Christian Platt, Werner Hanke +1
The symmetry of the order parameter in iron-based superconductors, especially the presence or absence of nodes, is still a question of debate. While contradictory experiments can b…
Doping-dependent pairing symmetry in the Iron-Pnictides
Ronny Thomale, Christian Platt, Jiangping Hu +2
We use the functional renormalization group method to analyze the phase diagram of a 4-band model for the iron-pnictides subject to band interactions with certain A_{1g} momentum d…
Pairing in the iron arsenides: a functional RG treatment
Christian Platt, Carsten Honerkamp, Werner Hanke
We study the phase diagram of a microscopic model for the superconducting iron arsenides by means of a functional renormalization group. Our treatment establishes a connection betw…