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7 papers · 2 filters
Bogoliubov Fermi surfaces from pairing of emergent fermions on the pyrochlore lattice
Shingo Kobayashi, Ankita Bhattacharya, Carsten Timm +1
We examine the appearance of superconductivity in the strong-coupling limit of the Hubbard model on the pyrochlore lattice. We focus upon the limit of half filling, where the norma…
Renormalization approach to the superconducting Kondo model
Steffen Sykora, Tobias Meng
An approach to bound states based on unitary transformations of Hamiltonians is presented. The method is applied to study the interaction between electrons in a BCS -wave superc…
Novel magnetic stoichiometric superconductor EuRbFe4As4
T. K. Kim, K. S. Pervakov, V. A. Vlasenko +16
In the novel stoichiometric iron-based material RbEuFe4As4 superconductivity coexists with a peculiar long-range magnetic order of Eu 4f states; their coexistance is puzzling and r…
Symmetry, nodal structure, and Bogoliubov Fermi surfaces for nonlocal pairing
Carsten Timm, Ankita Bhattacharya
Multiband effects can lead to fundamentally different electronic behavior of solids, as exemplified by the possible emergence of Fermi surfaces of Bogoliubov quasiparticles in cent…
Charge-Density-Wave-Induced Peak-Dip-Hump Structure and the Multiband Superconductivity in a Kagome Superconductor CsVSb
Rui Lou, Alexander Fedorov, Qiangwei Yin +7
The entanglement of charge density wave (CDW), superconductivity, and topologically nontrivial electronic structure has recently been discovered in the kagome metal VSb…
Unsplit superconducting and time reversal symmetry breaking transitions in SrRuO under hydrostatic pressure and disorder
Vadim Grinenko, Debarchan Das, Ritu Gupta +7
There is considerable evidence that the superconducting state of SrRuO breaks time reversal symmetry. In the experiments showing time reversal symmetry breaking its onset t…