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Influence of microstructure on superconductivity in KxFe2−ySe2 and evidence for a new parent phase K2Fe7Se8
The search for new superconducting materials has been spurred on by the discovery of iron-based superconductors whose structure and composition is qualitatively different from the cuprates. The studyExpand
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New result for the neutron β -asymmetry parameter A 0 from UCNA
Background: The neutron β-decay asymmetry parameter A_0 defines the angular correlation between the spin of the neutron and the momentum of the emitted electron. Values for A_0 permit an extractionExpand
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Observation of a van Hove singularity and implication for strong coupling induced Cooper pairing in KFe2As2
Scanning tunneling spectroscopy (STS) and angle-resolved photoemission spectroscopy (ARPES) have been investigated on single crystal samples of KFe2As2. A van Hove singularity (vHs) has been directlyExpand
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Precision measurement of the neutron β-decay asymmetry
A new measurement of the neutron β-decay asymmetry A_0 has been carried out by the UCNA Collaboration using polarized ultracold neutrons (UCNs) from the solid deuterium UCN source at the Los AlamosExpand
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Quantum Oscillations in Flux-Grown SmB_{6} with Embedded Aluminum.
SmB_{6} is a candidate topological Kondo insulator that displays surface conduction at low temperatures. Here, we perform torque magnetization measurements as a means to detect de Haas-van AlphenExpand
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Observation of multiple Dirac states in a magnetic topological material EuMg2Bi2
Initiated by the discovery of topological insulators, topologically non-trivial materials, more specifically topological semimetals and metals have emerged as new frontiers in the field of quantumExpand
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Mott behavior in K x Fe 2-y Se 2 superconductors studied by pump-probe spectroscopy
Wei Li,1 Chunfeng Zhang,1,* Shenghua Liu,1 Xiaxin Ding,1 Xuewei Wu,1 Xiaoyong Wang,1 Hai-Hu Wen,1 and Min Xiao1,2,† 1National Laboratory of Solid State Microstructures and School of Physics, NanjingExpand
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Strong and nonmonotonic temperature dependence of Hall coefficient in superconducting KxFe2-ySe2 single crystals
In-plane resistivity, magnetoresistance and Hall effect measurements have been conducted on quenched K$_x$Fe$_{2-y}$Se$_2$ single crystals in order to analysis the normal-state transport properties.Expand
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Measurement of the angle dependence of magnetostriction in pulsed magnetic fields using a piezoelectric strain gauge.
We present a high resolution method for measuring magnetostriction in millisecond pulsed magnetic fields at cryogenic temperatures with a sensitivity of 1.11×10-11/Hz . The sample is bonded to a thinExpand
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Stress‐Induced Domain Wall Motion in a Ferroelastic Mn3+ Spin Crossover Complex
Abstract Domain wall motion is detected for the first time during the transition to a ferroelastic and spin state ordered phase of a spin crossover complex. Single‐crystal X‐ray diffraction andExpand
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