63 citations · 326 across the 16 of their papers we have counts for
16 papers
Competing spin-glass and spin-fluctuation states in NdxPr4-xNi3O8
Shangxiong Huangfu, Zurab Guguchia, Tian Shang +5
Neodymium nickelates have attracted research interest due to their strongly correlated behaviour and remarkable magnetic properties. More importantly, superconductivity has recentl…
Single photon detection performance of highly disordered NbTiN thin films
Ruoyan Ma, Rui Shu, Xingyu Zhang +9
We experimentally investigated the detection performance of highly disordered NbxTi1-xN based superconducting nanowire single photon detectors (SNSPDs). The dependence on the compo…
Superconductivity in hydrated Lix(H2O)yTaS2
Huanlong Liu, Shangxiong Huangfu, Hai Lin +2
We have systematically studied the structural and physical properties of the superconducting hydrated Lix(H2O)yTaS2. The powder X-ray diffraction patterns suggest that all the samp…
Evidence for Isotropic s-Wave Superconductivity in High-Entropy Alloys
Casey K. W. Leung, Xiaofu Zhang, Fabian von Rohr +2
High-entropy alloys (HEA) form through the random arrangement of five or more chemical elements on a crystalline lattice. Despite the significant amount of resulting compositional…
Size dependent nature of the magnetic-field driven superconductor-to-insulator quantum-phase transitions
Xiaofu Zhang, Adriana E. Lita, Huanlong Liu +4
The nature of the magnetic-field driven superconductor-to-insulator quantum-phase transition in two-dimensional systems at zero temperature has been under debate since the 1980s, a…
Superconductivity and charge-density wave formation in lithium intercalated 2H-LixTaS2
Huanlong Liu, Shangxiong Huangfu, Xiaofu Zhang +2
We systematically investigated the superconducting properties and the interplay between charge-density-waves (CDW) and superconductivity in lithium-intercalated 2H-TaS2. By gradual…
Physical properties of amorphous molybdenum silicide films for single photon detectors
Xiaofu Zhang, Ilya Charaev, Huanlong Liu +4
We systematically investigated the physical properties of amorphous MoSi films deposited by the magnetron co-sputtering technique. The critical temperature …
Two-carrier Magnetoresistance: Applications to CaRuO
Lakshmi Das, Yang Xu, Tian Shang +13
Ambipolar transport is a commonly occurring theme in semimetals and semiconductors. Here we present an analytical formulation of the conductivity for a two-band system. Electron an…
Short-range magnetic interactions and spin-glass behavior in the quasi-2D nickelate Pr4Ni3O8
Shangxiong Huangfu, Zurab Guguchia, Denis Cheptiakov +6
The nickelate Pr4Ni3O8 features quasi-two-dimensional layers consisting of three stacked square-planar NiO2 planes, in a similar way to the well-known cuprate superconductors. The…
Anisotropic character of the metal-to-metal transition in Pr4NiO
Shangxiong Huangfu, Gawryluk Dariusz Jakub, Xiaofu Zhang +5
As a member of the Ruddlesden-Popper LnNiO series rare-earth-nickelates, the Pr4NiO consists of infinite quasi-two-dimensional perovskite-like Ni-O…
Preparation and Characterization of High-Entropy Alloy (TaNb)(ZrHfTi) Superconducting Films
Xiaofu Zhang, Natascha Winter, Catherine Witteveen +5
We report on the preparation and the physical properties of superconducting (TaNb)_1-x(ZrHfTi)_x high-entropy alloy films. The films were prepared by means of magnetron sputtering…
Strong suppression of the resistivity near the transition to superconductivity in narrow micro-bridges in external magnetic fields
Xiaofu Zhang, Adriana E. Lita, Konstantin Smirnov +5
We have investigated a series of superconducting bridges based on homogeneous amorphous WSi and MoSi films, with bridge widths w ranging from 2 um to 1000 um and film thicknesses d…
Electron energy relaxation in disordered superconducting NbN films
Mariia Sidorova, Alexej Semenov, Heinz-Wilhelm Hübers +8
We report on the inelastic-scattering rate of electrons on phonons and relaxation of electron energy studied by means of magnetoconductance, and photoresponse, respectively, in a s…
Sequential superconductor-Bose insulator-Fermi insulator phase transitions in two-dimensional a-WSi
Xiaofu Zhang, Andreas Schilling
A zero-temperature magnetic-field-driven superconductor to insulator transition (SIT) in quasi-two-dimensional superconductors is expected to occur when the applied magnetic-field…
Superconducting fluctuations and characteristic time scales in amorphous WSi
Xiaofu Zhang, Adriana E. Lita, Mariia Sidorova +5
We study magnitudes and temperature dependences of the electron-electron and electron-phonon interaction times which play the dominant role in the formation and relaxation of photo…
Detection Mechanism in SNSPD: Numerical Results of a Conceptually Simple, Yet Powerful Detection Model
Andreas Engel, Julia Lonsky, Xiaofu Zhang +1
In a recent publication we have proposed a numerical model that describes the detection process of optical photons in superconducting nanowire single-photon detectors (SNSPD). Here…