Thermal imaging of spin Peltier effect
نویسندگان
چکیده
منابع مشابه
Thermal imaging of spin Peltier effect
The Peltier effect modulates the temperature of a junction comprising two different conductors in response to charge currents across the junction, which is used in solid-state heat pumps and temperature controllers in electronics. Recently, in spintronics, a spin counterpart of the Peltier effect was observed. The 'spin Peltier effect' modulates the temperature of a magnetic junction in respons...
متن کاملSimultaneous Thermal Imaging of Peltier and Joule Effects
We present a novel thermoreflectance technique to visualise quasi-static Peltier and Joule thermal distributions simultaneously, enabling side-by-side comparison in situ. The main principle is an extension of so called ’-bucket’ imaging techniques well documented in the literature. The method is particularly advantageous in improving both the reliability and turnaround time for the characteris...
متن کاملObservation of the spin Peltier effect for magnetic insulators.
We report the observation of the spin Peltier effect (SPE) in the ferrimagnetic insulator yttrium iron garnet (YIG), i.e., a heat current generated by a spin current flowing through a platinum (Pt)|YIG interface. The effect can be explained by the spin transfer torque that transforms the spin current in the Pt into a magnon current in the YIG. Via magnon-phonon interactions the magnetic fluctua...
متن کاملThermal effect and role of entanglement and coherence on excitation transfer in a spin chain
We analyze the role of bath temperature, coherence and entanglement on excitation transfer in a spin chain induced by the environment. In Markovian regime, we show that coherence and entanglement are very sensitive to bath temperature and vanish in time in contrary to the case of having zero-temperature bath. That is while, finding the last qubit of the chain in excited state increases by incre...
متن کاملNonlinear Peltier Effect in Quantum Point Contacts
A theoretical analysis of the Peltier effect in two-dimensional quantum point contacts, in field-free conditions and under the influence of applied magnetic fields, is presented. It is shown that in the nonlinear regime (finite applied voltage) new peaks in the Peltier coefficient appear leading to violation of Onsager’s relation. Oscillations of the Peltier coefficient in a magnetic field are ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Communications
سال: 2016
ISSN: 2041-1723
DOI: 10.1038/ncomms13754