Resultados de investigación

The Electronic Supporting Information contains: (1) zeta potential measurements of PLL/SDS aggregates, (2) materials and methods, (3) low-Qz compositional analysis: fitting, (4) ellipsometry data on PLL/SDS spread film dynamics, (5) BAM images, (6) full-Qz structural analysis: fitting and parameters, and (7) mid-Qz structural dynamics analysis: fitting., Peer reviewed

We included a supplemental pdf file which contains further information of the details of our calculations, our implemented mean-field Hubbard model with non-equilibrium Green's functions, and extra calculations such as the effect of the Coulomb repulsion parameter on monolayer and bilayer zigzag graphene nanoribbons, other possible (but higher in energy) spin configurations and their transport properties, etc., In this supplementary material we describe our methodology and present additional calculations that may be interesting for a deeper understanding of the reported effects. In Sec. S1 we explain the details of the calculation with the mean- eld Hubbard model (MFH). In Sec. S2 we show the effect of the Coulomb repulsion on the bands of bilayer and monolayer graphene nanoribbons, while in Sec. S3 we show the effect that the size of the scattering region has on the local magnetization of the device. Next in Sec. S4 we plot all the possible spin con gurations resulting from the possible combinations of the spin densities of the four electrodes. In Secs. S6 and S7 we show the gure of merit, where we analyze the quality of the device as a spin-beam splitter or mirror, and the spin polarization at a different electronic energy from the one shown in the main text, respectively. In Sec. S8 we compare the transport properties for different ribbon widths. In Sec. S9 we show the quality of the independent scatterers approximation compared to the exact result for a device with three crossings. In Sec. S10 we compare the spin-averaged transmission probabilities with the unpolarized case. In Sec. S11 we explore how possible distortions, such as a small twist angle or a lateral translation of the on-top ribbon with respect to the bottom one, affect the transport properties of individual crossings. In Sec. S12 we describe the used statistical sampling and analytical expression for the averaged spin-polarization shown in Fig. 4(b) of the main text. Finally, in Sec. S13 we analyze the spin-polarizing beam-splitting effect that can be found in junctions formed with other edge-polarized GNRs, such as those built with crossed bearded GNRs., Peer reviewed

Derivation of the stretched exponential function, leading to the expression in eq 10; fabrication of QD in PMMA thin films by spin-coating using a Model KW-4A Spin-Coater; single-particle measurement using photon correlation technique; notes about dark fraction in QDs on (i) how it is related to the fluorescence intermittency (blinking) of QDs, (ii) how it affects the PL decay kinetics, and (iii) how one can use the statistical analysis to identify the formation of a dark fraction in a QD ensemble without measurement of QY and single-particle measurements., Peer reviewed

PLIF ignition movie at a CO:O2 ratio of 1:5 (MP4) PLIF ignition movie at a CO:O2 ratio of 1:1 (MP4) PLIF ignition movie at a CO:O2 ratio of 2:1 (MP4) Additional NAP-XPS data during the “C” burning in ALBA, a comparison of the ignition in NSLS-II and ALBA experiments, more details on the active stage during the ALBA measurements and the gas phase variation during the active stage in NSLS-II experiments., Peer reviewed

Supplemental Material: Computational Details..........1 Suplementary Figures..........5 Suplementary Tables..........10, Peer reviewed

When electric conductors differ from their mirror image, unusual chiral transport coefficients appear that are forbidden in achiral metals, such as a non-linear electric response known as electronic magneto-chiral anisotropy (eMChA). While chiral transport signatures are by symmetry allowed in many conductors without a center of inversion, it reaches appreciable levels only in rare cases when an exceptionally strong chiral coupling to the itinerant electrons is present. So far, observations of chiral transport have been limited to materials in which the atomic positions strongly break mirror symmetries. Here, we report chiral transport in the centro-symmetric layered Kagome metal CsV3Sb5, observed via second harmonic generation under in-plane magnetic field. The eMChA signal becomes significant only at temperatures below T'~ 35 K, deep within the charge ordered state of CsV3Sb5 (TCDW ~ 94 K). This temperature dependence reveals a direct correspondence between electronic chirality, unidirectional charge order, and spontaneous time-reversal-symmetry breaking due to putative orbital loop currents. We show that the chirality is set by the out-of-plane field component and that a transition from left- to right-handed transport can be induced by changing the field sign. CsV3Sb5 is the first material in which strong chiral transport can be controlled and switched by small magnetic-field changes, in stark contrast to structurally chiral materials -- a prerequisite for their applications in chiral electronics., Peer reviewed

Supplemental Material, details of theoretical calculations and technical details for the experiment., The supplementary material is divided into two parts. Part I covers the experimental methods: section I A details how the order parameter was extracted from the spectroscopic data and gives an estimate of the uncertainty, while sections I B and I C comment on the broadening of the density of states and the disorder respectively. Part II presents the details of the theoretical model, where a general overview is given in section II A, followed by the triplet model in section II B. At the end two-pocket models are discussed: The possibility of a Suhl-Matthias-Walker coupling is discussed in section II C, and is ruled out on the basis of disorder, and a McMillan coupling is discussed in section II D, which is ruled out based on spectroscopic and transport data., Peer reviewed

Further information on the (Te, Tl)-AIMDEF and XAS simulations., A.T, J.I.J, and M.A. acknowledge financial support by the Gobierno Vasco-UPV/EHU [Project No. IT1569-22] and by the Spanish MCIN/AEI/10.13039/501100011033 [Grant No. PID2019-107396GB-I00]. P.S. acknowledges support by the Deutsche Forschungsge meinschaft (DFG), through project Sa 547-18. C.E. acknowledges the Klaus Tschira Foun dation for financial support. This research was conducted in the scope of the Transnational Common Laboratory (LTC) “QuantumChemPhys – Theoretical Chemistry and Physics at the Quantum Scale”. Computational resources were provided by the DIPC computing center., Peer reviewed

The supplemental materials include the details about the sample preparation, experimental methods, identification of the HREELS features, data fitting methods, and calculations. And the supplemental video demonstrates the simulation of the plasmon response to the development of the CDW gap., Peer reviewed

Quality-filtered reads for each sample in FASTQ format. ddRAD_reads.zip Rodent alignments used for calibration in NEXUS format. BEAST_alignments.zip, Molecular dating methods of population splits are crucial in evolutionary biology, but they present important difficulties due to the complexity of the genealogical relationships of genes and past migrations between populations. Using the double digest restriction-site associated DNA (ddRAD) technique and an isolation-with-migration (IM) model, we studied the evolutionary history of water vole populations of the genus Arvicola, a group of complex evolution with fossorial and semi-aquatic ecotypes. To do this, we first estimated mutation rates of ddRAD loci using a phylogenetic approach. An IM model was then used to estimate split times and other relevant demographic parameters. A set of 300 ddRAD loci that included 85 calibrated loci resulted in good mixing and model convergence. The results showed that the two populations of A. scherman present in the Iberian Peninsula split 34 thousand years ago, during the last glaciation. In addition, the much greater divergence from its sister species, A. amphibius, may help to clarify the controversial taxonomy of the genus. We conclude that this approach, based on ddRAD data and an IM model, is highly useful for analyzing the origin of populations and species., MCIN/AEI/10.13039/501100011033, Award: CGL2014-53968-P MCIN/AEI/10.13039/501100011033, Award: CGL2017-84799-P National Science Foundation, Award: 1625061 US Army Research Laboratory, Award: W911NF-16-2-0189, Peer reviewed