Year: 2013
Type: article
Abstract: To identify possible spin texture contributions to thermoelectric transport, we present a detailed temperature and pressure dependence of thermopower S in MnSi, as well as a low-temperature study of S in a magnetic field. We find that S / T reconstructs the phase diagram of MnSi encompassing the Fermi liquid, partially ordered, and non–Fermi-liquid phases. Our results indicate that the latter two phases have essentially the same nature. In the partially ordered phase, S ( T ) is strongly enhanced, which may be understood as a spiral-fluctuation–driven phase. A low-temperature upturn in S / T pertaining to the partial-order phase persists up to the highest pressure, 24 kbar. Contrarily, a small suppression of S ( T ) is observed in the ordered skyrmion lattice A phase.
Source: Europhysics Letters (EPL)
Authors: Stevan Arsenijević, Cedomir Petrovic, László Forró, Ana Akrap
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1986449134