Multigap Superconductivity in RbCa2Fe4As4F2 Investigated Using mu SR Measurements
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 87:12 (2018) ARTN 124705
Quantum magnetism in molecular spin ladders probed with muonspin spectroscopy
New Journal of Physics Institute of Physics 20 (2018) 103002
Abstract:
Wepresent the results of muon-spin spectroscopy (μ+SR) measurements on the molecular spin ladder system (Hpip)2CuBr4(1−x)Cl4x, [Hpip = (C5H12N)]. Using transverse field μ+SR we are able to identify characteristic behaviour in each of the regions of the phase diagram of the x = 0 strong-rung spin ladder system (Hpip)2CuBr4. Comparison of our results to those of the dimer-based molecular magnet Cu(pyz)(gly)(ClO4) shows several common features.Welocate the crossovers in partially disordered (Hpip)2CuBr4(1−x)Cl4x (x = 0.05), where a region of behaviour intermediate between quantum disordered and Luttinger liquid-like is identified. Our interpretation of the results incorporates an analysis of the probable muon stopping states in (Hpip)2CuBr4 based on density functional calculations and suggests how the muon plus its local distortion can lead to a local probe unit with good sensitivity to the magnetic state. Using longitudinal field μ+SR we compare the dynamic response of the x = 1 strong-rung material (Hpip)2CuCl4 to that of the strong-leg material (C7H10N)2CuBr4 (known as DIMPY) and demonstrate that our results are in agreement with predictions based on interacting fermionic quasiparticle excitations in these materials.Quantum magnetism in molecular spin ladders probed with muonspin spectroscopy
NEW JOURNAL OF PHYSICS 20 (2018) ARTN 103002
Observation of a crossover from nodal to gapped superconductivity in LuxZr1-xB12
PHYSICAL REVIEW B 98:9 (2018) ARTN 094505
Magnetic phases of skyrmion-hosting GaV4S8-ySey (y=0, 2, 4, 8) probed with muon spectroscopy
PHYSICAL REVIEW B 98:5 (2018) ARTN 054428