nov
08
2014
New family of superconductor materials
By luiz
By the controlled addition of doping impurities, Prof. Renato Jardim and collaborators from EEL-USP, UNIFEI and UNICAMP developed a new family of superconductors with relatively high critical temperature. In a recent paper, the hexagonal structure stabilization of the Nb5Ge3 compound doped with carbon atoms was reported.
Bortolozo, A. D. et al. Interstitial doping
induced superconductivity at 15.3K in
Português, Brasil
A neutron diffraction study by Prof. Renato F. Jardim in collaboration with UNICAMP, NIST and the San Diego State University determined the magnetic properties of the Sr2YRuO6 system. The data revealed planar magnetic correlations that condense into a partial long-range ordered state with coupled alternate antiferromagnetic YRuO4 square layers coexisting with the short-range correlations.
O professor Ronaldo Rodrigues Pelá, do Departamento de Física do ITA, foi premiado na Conferência Internacional de Física de Semicondutores (ICPS) ocorrida de 29/07 a 03/08 no ETH em Zurique.
A new class of nonequilibrium phenomena is expected when a low-dimensional electron gas, subjected to a weak magnetic field, is also irradiated with microwaves. In a recent publication, an experimental work in the LNMS at DFMT-IFUSP provides evidence for an edge-state current stabilized by microwave irradiation.
In collaboration with the Institute of Semiconductor Physics from Russia, Prof. Gennady Gusev studied the quantized transport in HgTe wells with inverted band structure corresponding to the two-dimensional topological insulator phase (2D TI) with locally controlled density allowing n-p-n and n-2D TI-n junctions.
In the last weeks of January, a vibrating sample magnetometer - VSM was installed in the Laboratory of Magnetic Materials. This equipment, model 7404 from LakesShore is used to characterize the DC magnetic properties of materials as a function of magnetic field, temperature, and time.