Non-collinear triangular antiferromagnets with a coplanar spin arrangement and vanishing net magnetic moment can exhibit a large anomalous Hall effect owing to their non-vanishing momentum space Berry curvature. Here we show the existence of a large field induced topological Hall effect in the non-coplanar triangular antiferromagnetic geometry of Mn3Sn. A detailed magnetic and Hall effect measurements demonstrate the presence of three distinct Hall contributions; a high temperature anomalous Hall effect, a low temperature toplogical Hall effect and an intermediate temperature region with coexistence of both the effects. The origin of the observed topological Hall effect is attributed to the scalar spin chirality induced real space Berry curvature that appears when the system undergoes from a trivial non-coplanar triangular spin alignement to a topologically protected non-trivial spin texture like skyrmions by application of magnetic field at low temperatures.

The thermal conductivity of Cu2Te is around 4 W m−1 K−1 at 300 K with low Cp values.

No abstract

Abstract-In many current SoCs, the architectural interface to onchip monitors is ad hoc and inefficient. In this paper, a new architectural approach which advocates the use of a separate lowoverhead subsystem for monitors is described. A key aspect of this approach is an on-chip interconnect specifically designed for monitor data with different priority levels. The efficiency of our monitor interconnect is assessed for a multicore system using both an interconnect and a system-level simulator. Collected monitor information is used by a dedicated processor to control the frequency and voltage of individual multicore processors. Experimental results show that the new low-overhead subsystem facilitates employment of thermal and delay-aware dynamic voltage and frequency scaling.

No abstract