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- Universidade Estadual de Campinas (UNICAMP)BR15 papers
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5 papers · 1 filter
Magnetoelastic and thermal effects in the BiMn2O5 lattice: a high-resolution x-ray diffraction study
E. Granado, M. S. Eleoterio, A. F. Garcia-Flores +3
High-resolution synchrotron x-ray diffraction measurements were performed on single crystalline and powder samples of BiMn2O5. A linear temperature dependence of the unit cell volu…
Universality of liquid-gas Mott transitions at finite temperatures
Stefanos Papanikolaou, Rafael Monteiro Fernandes, Eduardo Fradkin +3
We explain in a consistent manner the set of seemingly conflicting experiments on the finite temperature Mott critical point, and demonstrate that the Mott transition is in the Isi…
Determination of spin polarization in InAs/GaAs self-assembled quantum dots
F. G. G. Hernandez, T. P. Mayer Alegre, G. Medeiros-Ribeiro
The spin polarization of electrons trapped in InAs self-assembled quantum dot ensembles is investigated. A statistical approach for the population of the spin levels allows one to…
Is Small Perfect? Size Limit to Defect Formation in Pyramidal Pt Nanocontacts
Varlei Rodrigues, Fernando Sato, Douglas S. Galvao +1
We report high resolution transmission electron microscopy and ab initio calculation results for the defect formation in Pt nanocontacts (NCs). Our results show that there is a siz…
Polarization-selective excitation of N-V centers in diamond
T. P. Mayer Alegre, C. Santori, G. Medeiros-Ribeiro +1
The nitrogen-vacancy (N-V) center in diamond is promising as an electron spin qubit due to its long-lived coherence and optical addressability. The ground state is a spin triplet w…