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Superconductivity by alloying the topological insulator SnBi2Te4
Michael A. McGuire, Heda Zhang, Andrew F. May +7
Alloying indium into the topological insulator Sn1-xInxBi2Te4 induces bulk superconductivity with critical temperatures Tc up to 1.85 K and upper critical fields up to about 14 kOe…
Orbital occupancy and charge doping in iron-based superconductors
Claudia Cantoni, Jonathan E. Mitchell, Andrew F. May +9
Iron-based superconductors (FBS) comprise several families of compounds having the same atomic building blocks for superconductivity, but large discrepancies among their physical p…
The influence of spin fluctuations on the thermal conductivity in superconducting Ba(Fe_{1-x}Co_x)_2As_2
Andrew F. May, Michael A. McGuire, Jonathan E. Mitchell +2
The thermal conductivity of electron-doped Ba(FeCo)As single crystals is investigated below 200K, with an emphasis on the behavior near the magnetic and superco…
Spin reorientation in TlFe1.6Se2 with complete vacancy ordering
Andrew F. May, Michael A. McGuire, Huibo Cao +5
The relationship between vacancy ordering and magnetism in TlFe1.6Se2 has been investigated via single crystal neutron diffraction, nuclear forward scattering, and transmission ele…
Evolution of the nuclear and magnetic structures of TlFe1.6Se2 with temperature
Huibo Cao, Claudia Cantoni, Andrew F. May +6
The evolution of the nuclear and magnetic structures of TlFeSe was determined in the temperature range of 5-450\,K using single crystal neutron diffraction. The Fe laye…
Unusual Phase Transitions and Magnetoelastic Coupling in TlFe1.6Se2 Single Crystals
Brian C. Sales, Michael A. McGuire, Andrew F. May +3
Structural, magnetic, electrical transport, and heat capacity data are reported for single crystals of TlFe1.6Se2. This compound crystallizes in a tetragonal structure similar to t…