160 citations · 621 across the 37 of their papers we have counts for
27 papers · 1 filter
Dynamical Coulomb Blockade as a Signature of the Sign-Reversing Cooper Pairing Potential
Chaofei Liu, Pedro Portugal, Yi Gao +8
Coulomb blockade occurs for electrons tunneling into nanoislands because of the quantization of charge. Here, using spectroscopy measurements of nonmagnetic islands grown on a high…
Quantum phase transition of correlated iron-based superconductivity in LiFeCoAs
Jia-Xin Yin, Songtian S. Zhang, Guangyang Dai +25
The interplay between unconventional Cooper pairing and quantum states associated with atomic scale defects is a frontier of research with many open questions. So far, only a few o…
Anomalous sharp peak in the London penetration depth induced by the nodeless-to-nodal superconducting transition in BaFe(AsP)
Huai-Xiang Huang, Wei Li, Yi Gao +2
The issue of whether the quantum critical point (QCP) is hidden inside unconventional superconductors is a matter of hot debate. Although a prominent experiment on London penetrati…
Spin excitations in nickelate superconductors
Tao Zhou, Yi Gao, Z. D. Wang
We study theoretically spin excitations in the newly discovered nickelate superconductors based on a single-band model and the random phase approximation. The spin excitations are…
Possible pairing symmetry in the FeSe-based superconductors determined by quasiparticle interference
Yi Gao, Yuting Wang, Tao Zhou +2
We study the momentum-integrated quasiparticle interference (QPI) in the FeSe-based superconductors. This method was recently proposed theoretically and has been applied to determi…
Detecting competing orders through the edge states in the heterostructures with high-Tc superconductors
Tao Zhou, Yi Gao, Z. D. Wang
Considering a -wave superconductor being in proximity to a two-dimensional Weyl model, a topological superconductor with gapless edge states may be realized. We here demonstrate…
Resolving different pairing states in Weyl superconductors through the single-particle spectrum
Tao Zhou, Yi Gao, Z. D. Wang
We study theoretically single-particle spectra of Weyl superconductors. Three different superconducting pairing states are addressed, which are the BCS-type states with the -wav…
In-gap bound states induced by a single nonmagnetic impurity in sign-preserving s-wave superconductors with incipient bands
Yi Gao, Yan Yu, Tao Zhou +2
We have investigated the in-gap bound states (IGBS) induced by a single nonmagnetic impurity in multiband superconductors with incipient bands. Contrary to the naive expectation, w…
Possible spin excitation structure in monolayer FeSe grown on SrTiO
Yi Gao, Yan Yu, Tao Zhou +2
Based on recent high-resolution angle-resolved photoemission spectroscopy measurement in monolayer FeSe grown on SrTiO, we constructed a tight-binding model and proposed a su…
Hidden sign-changing -wave superconductivity in monolayer FeSe
Yi Gao, Yan Yu, Tao Zhou +2
Combining the recent scanning tunneling microscopy (STM) and angle-resolved photoemission spectroscopy (ARPES) measurements, we construct a tight-binding model suitable for describ…
Superconductivity in doped inversion-symmetric Weyl semimetals
Tao Zhou, Yi Gao, Z. D. Wang
We study theoretically the superconductivity in doped Weyl semimetals with an inversion symmetry based on the Bogoliubov-de Gennes equations. In principle, the two superconducting…
Tunneling interstitial impurity in iron-chalcogenide based superconductors
Huaixiang Huang, Degang Zhang, Yi Gao +2
A pronounced local in-gap zero-energy bound state (ZBS) has been observed by recent scanning tunneling microscopy (STM) experiments on the interstitial Fe impurity (IFI) and its ne…
Majorana zero modes in the hopping-modulated one-dimensional -wave superconducting model
Yi Gao, Tao Zhou, Huaixiang Huang +1
We investigate the one-dimensional -wave superconducting model with periodically modulated hopping and show that under time-reversal symmetry, the number of the Majorana zero mo…
Charge-impurity-induced Majorana fermions in topological superconductors
Tao Zhou, Xiao-Jing Li, Yi Gao +1
We study numerically Majorana fermions (MFs) induced by a charged impurity in topological superconductors. It is revealed from the relevant Bogoliubov-de Gennes equations that (i)…
Possible superconductivity in SrIrO probed by quasiparticle interference
Yi Gao, Tao Zhou, Huaixiang Huang +1
Based on the possible superconducting (SC) pairing symmetries recently proposed, the quasiparticle interference (QPI) patterns in electron- and hole-doped SrIrO are the…
"Nodal gap" induced by the incommensurate diagonal spin density modulation in underdoped high- superconductors
Tao Zhou, Yi Gao, Jian-Xin Zhu
Recently it was revealed that the whole Fermi surface is fully gapped for several families of underdoped cuprates. The existence of the finite energy gap along the -wave nodal l…
Testing the -wave pairing symmetry by quasiparticle interference in BiS-based superconductors
Yi Gao, Tao Zhou, Huaixiang Huang +2
The quasiparticle interference (QPI) patterns in BiS-based superconductors are theoretically investigated by taking into account the spin-orbital coupling and assuming the re…
Topological quantum phase transitions and edge states in spin-orbital coupled Fermi gases
Tao Zhou, Yi Gao, Z. D. Wang
We study the superconducting state in the presence of spin-orbital coupling and the Zeeman field. It is found that a phase transition from the Fulde-Ferrell-Larkin-Ovchinnikov stat…
Probing active/passive bands by quasiparticle interference in SrRuO
Yi Gao, Tao Zhou, Huaixiang Huang +3
The quasiparticle interference (QPI) in SrRuO is theoretically studied based on two different pairing models in order to propose an experimental method to test them. Fo…
Pairing symmetry in BiSbased superconductors
Yi Gao
The possible pairing symmetries for BiSbased superconductors is investigated by using a minimal two-orbital model with onsite and nearest-neighbor intraorbital attractions $…
Mixed-State Effect on the Low-Energy Spin Dynamics in Optimally-doped Iron Pnictide Superconductors
Yi Gao, Tao Zhou, Huaixiang Huang +2
Based on a phenomenological model with or s-wave pairing symmetry, the mixed-state effect on the low-energy spin dynamics in optimally-doped iron pnictide superconductors…
Superfluid density in the -wave state of clean iron-based superconductors
Huaixiang Huang, Yi Gao, Jian-Xin Zhu +1
Based on a phenomenological model and the Kubo formula, we investigate the superfluid density and then the penetration depth of the iron-based superconductors in th…
Impurity-induced quasiparticle interference in the parent compounds of iron-pnictide superconductors
Huaixiang Huang, Yi Gao, Degang Zhang +1
The impurity-induced quasiparticle interference(QPI) in the parent compounds of iron-pnictide superconductors is investigated based on a phenomenological two-orbital four-band mode…
Consistent picture for the electronic structure around a vortex core in iron-based superconductors
Tao Zhou, Z. D. Wang, Yi Gao +1
Based on a two-orbital model and taking into account the presence of the impurity, we studied theoretically the electronic structure in the vortex core of the iron-Pnictide superco…