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The preparation and phase diagrams of (LiFeOD)FeSe and (LiFeOH)FeSe superconductors
Xiuquan Zhou, Christopher K. H. Borg, Jeffrey W. Lynn +3
We report the phase diagram for the superconducting system (LiFeOD)FeSe and contrast it with that of (LiFeOH)FeSe both in single crystal…
Creating Nanostructured Superconductors On Demand by Local Current Annealing
Hongwoo Baek, Jeonghoon Ha, Duming Zhang +10
Superconductivity results from a Bose condensate of Cooper-paired electrons with a macroscopic quantum wavefunction. Dramatic effects can occur when the region of the condensate is…
Breakdown of compensation and persistence of non-saturating magnetoresistance in WTe2 thin flakes
Yilin Wang, Kefeng Wang, Janice Reutt-Robey +2
We present a detailed study of magnetoresistance \r{ho}xx(H), Hall effect \r{ho}xy(H), and electrolyte gating effect in thin (<100 nm) exfoliated crystals of WTe2. We observe quant…
Neutron investigation of the magnetic scattering in an iron-based ferromagnetic superconductor
Jeffrey W. Lynn, Xiuquan Zhou, Christopher K. H. Borg +3
Neutron diffraction and small angle scattering experiments have been carried out on the double-isotopic polycrystalline sample (7Li0.82Fe0.18OD)FeSe. Profile refinements of the dif…
Tunable electronic anisotropy in single-crystal A2Cr3As3 (A = K, Rb) quasi-one-dimensional superconductors
X. F. Wang, C. Roncaioli, C. Eckberg +6
Single crystals of A2Cr3As3 (A = K, Rb) were successfully grown using a self-flux method and studied via structural, transport and thermodynamic measurement techniques. The superco…
Ambipolar Surface State Thermoelectric Power of Topological Insulator Bi2Se3
Dohun Kim, Paul Syers, Nicholas P. Butch +2
We measure gate-tuned thermoelectric power of mechanically exfoliated Bi2Se3 thin films in the topological insulator regime. The sign of the thermoelectric power changes across the…
High-temperature superconductivity stabilized by electron-hole interband coupling in collapsed tetragonal phase of KFe2As2 under high pressure
Yasuyuki Nakajima, Renxiong Wang, Tristin Metz +4
We report a high-pressure study of simultaneous low-temperature electrical resistivity and Hall effect measurements on high quality single-crystalline KFe2As2 using designer diamon…
Topological PdBi half-Heusler semimetals: a new family of non-centrosymmetric magnetic superconductors
Yasuyuki Nakajima, Rongwei Hu, Kevin Kirshenbaum +9
We report superconductivity and magnetism in a new family of topological semimetals, the ternary half Heusler compounds PdBi ( : rare earth). In this series, tuning of the ra…