By carrying out magnetotransport measurements up to 30 T, we succeeded in detecting and analyzing quantitatively Shubnikov-de Haas oscillations in two crystals of the REFeAsO (RE=rareearth) family of iron pnictides, namely, the undoped SmFeAsO and the superconducting fluorine underdoped SmFeAs(O,F). We combine experimental outcomes and ab...
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2017 (v1)PublicationUploaded on: April 14, 2023
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2015 (v1)Publication
Nitroxides have great potential as contrast agents for Magnetic Resonance Imaging (MRI). Two b - cyclodextrin ( b CD) derivatives bearing one or seven (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) units on the small rim of b CD (CD3 and CD6 respectively) were synthesized. Their e ff ective magnetic moments were...
Uploaded on: July 1, 2023 -
2018 (v1)Publication
Electric and thermoelectric transport properties are mutually intertangled in diffusive transport equations. In particular, in high mobility multiband systems an anomalous behavior may occur, which can be tracked down to the properties of the individual bands. Here, we present magnetoelectric and magnetothermoelectric transport properties of a...
Uploaded on: March 27, 2023 -
2016 (v1)Publication
Structural and transport properties in the normal and superconducting states are investigated in a Ca0.8La0.2FeAs2 single crystal with Tc = 27 K, belonging to the newly discovered 112 family of iron based superconductors. The transport critical current density Jc for both field directions measured in a focused ion beam patterned microbridge...
Uploaded on: July 1, 2023 -
2014 (v1)Publication
The study of overdoped FeTe1-xSex (0.5 < x < 1) polycrystalline superconductor samples is reported. The samples were prepared using a melting technique previously developed by our group. Increasing the Se content a phase separation related to the formation of FeSe inside the Fe(Se,Te) phase happens, as demonstrated by structural analysis and...
Uploaded on: April 14, 2023 -
2016 (v1)Publication
The deliberate insertion of magnetic Mn dopants in the Fe sites of the optimally doped SmFeAsO0.88F0.12 iron-based superconductor can modify in a controlled way its electronic properties. The resulting phase diagram was investigated across a wide range of manganese contents (x) by means of muon-spin spectroscopy (μSR), both in zero and in...
Uploaded on: July 1, 2023