250 citations · 2.5k across the 105 of their papers we have counts for
14 papers · 1 filter
Quantum geometry of singlet superconductors
David Porlles, Wei Chen
We elaborate that -wave and -wave superconductors described by mean field theories possess a nontrivial quantum geometry. From the overlap of two quasihole states at slightly…
Tomasch Oscillations as Above-Gap Signature of Topological Superconductivity
Antonio Štrkalj, Xi-Rong Chen, Wei Chen +2
The identification of topological superconductors usually involves searching for in-gap modes that are protected by topology. However, in the current experimental settings, the smo…
Anomalous Andreev Reflection on a Torus-Shaped Fermi Surface
Wei Luo, Wei Chen, D. Y. Xing
Andreev reflection (AR) refers to the electron-hole conversion at the normal metal-superconductor interface. In a three-dimensional metal with spherical Fermi surface, retro (specu…
Majorana Edge States in Superconductor/Noncollinear Magnet Interfaces
Wei Chen, Andreas P. Schnyder
Through coupling, a superconducting thin film interfaced to a noncollinear magnetic insulator inherits its magnetic order, which may induce unconventional superconductivity t…
Josephson Effect and Triplet--Singlet Ratio of Non--centrosymmetric Superconductors
Ludwig Klam, Anthony Epp, Wei Chen +2
We calculate the Andreev bound states and the corresponding Josephson current for an asymmetric 2-dimensional Josephson junction by solving Bogoliubov-de-Gennes equations. The junc…
Detecting Fulde-Ferrell superconductors by an Andreev interferometer
Wei Chen, Ming Gong, R. Shen +1
We propose an Andreev interferometer, based on a branched Y-junction, to detect the finite momentum pairing in Fulde-Ferrell (FF) superconductors. In this interferometer, the oscil…
Implications of Resonant Inelastic X-ray Scattering Data for Theoretical Models of Cuprates
Wei Chen, Oleg P. Sushkov
There are two commonly discussed points of view in theoretical description of cuprate superconductors, (i) Cuprates can be described by the modified t-J model. (ii) Overdoped cupra…
Charge and spin supercurrents in triplet superconductor--ferromagnet--singlet superconductor Josephson junctions
P. M. R. Brydon, Wei Chen, Yasuhiro Asano +1
We study the Josephson effect in a triplet superconductor--ferromagnet--singlet superconductor junction. We show that the interaction of tunneling Cooper pairs with the interface m…
Specular Andreev Reflection in Inversion-symmetric Weyl-semimetals
Wei Chen, Liang Jiang, R. Shen +3
The electron-hole conversion at the normal-metal superconductor interface in inversion-symmetric Weyl semimetals is investigated with an effective two-band model. We find that the…
Fermi Surface Reconstruction by Dynamic Magnetic Fluctuations and Spin-Charge Separation Near an O(3) Quantum Critical Point
Michael Holt, Jaan Oitmaa, Wei Chen +1
Stimulated by the small/large Fermi surface controversy in the cuprates we consider a small number of holes injected into the bilayer antiferromagnet. The system has an O(3) quantu…
Fermi Surface Reconstruction by Dynamic Magnetic Fluctuations
Michael Holt, Jaan Oitmaa, Wei Chen +1
We demonstrate that nearly critical quantum magnetic fluctuations in strongly correlated electron systems can change the Fermi surface topology and also lead to spin charge separat…
Bulk and Surface Nanoscale Hole Density Inhomogeneity in HgBaCuO and BiSrCaCuO Cuprates
Wei Chen, Oleg P. Sushkov, Giniyat Khaliullin
It is well established that the hole density in the prototypical superconductor LaSrCuO is very inhomogeneous due to Sr-dopant induced disorder. On the other hand,…
Magnetic quantum oscillations and multiple holon pockets in underdoped YBaCuO
Wei Chen, Oleg P. Sushkov, Takami Tohyama
We show that lightly doped YBaCuO has multiple holon pockets with different areas, which lead to multiple frequencies of magnetic quantum oscillations. Using neutro…
Fourier transform spectroscopy of d-wave quasiparticles in the presence of atomic scale pairing disorder
Tamara S. Nunner, Wei Chen, Brian M. Andersen +2
The local density of states power spectrum of optimally doped BiSrCaCuO (BSCCO) has been interpreted in terms of quasiparticle interference peaks corresponding…