Lost Heat Capacity and Entropy in the Helical Magnet MnSi

QC 20110708
Original Publication: Sergei M Stishov, Alla E Petrova, Anatoly A Shikov, Thomas A Lograsso, Eyvas Isaev, Borje Johansson and Luke L Daemen, Lost Heat Capacity and Entropy in the Helical Magnet MnSi, 2010, PHYSICAL REVIEW LETTERS, (105), 23, 236403. http://dx.doi.org/10.1103/PhysRevLett.105.236403 Copyright: American Physical Society http://www.aps.org/
The heat capacity of MnSi at B = 0 and B = 4 T was measured in the temperature range 2.5-100 K. To analyze the data, calculations of the phonon spectrum and phonon density of states in MnSi were performed. The calculated phonon frequencies were confirmed by means of inelastic neutron scattering. The analysis of the data suggests the existence of negative contributions to the heat capacity and entropy of MnSi at T > T-c that may imply a specific ordering in the spin subsystem in the paramagnetic phase of MnSi.

Petrova, Alla E.Russian Academy of Science (författare)
Shikov, Anatoly A.Russian Research Centre, Kurchatov Institute (författare)
Lograsso, Thomas A.Iowa State University (författare)
Isaev, EyvasLinköpings universitet,Teoretisk Fysik,Tekniska högskolan(Swepub:liu)eyvis16 (författare)
Johansson, BörjeKTH,Tillämpad materialfysik,Royal Technology University(Swepub:kth)u13m8u34 (författare)
Daemen, Luke L.Los Alamos National Laboratory (författare)
Russian Academy of ScienceRussian Research Centre, Kurchatov Institute (creator_code:org_t)

Ingår i:Physical Review Letters: American Physical Society105:23, s. 236403-0031-90071079-7114

Av författaren/redakt...: Stishov, Sergei ...; Petrova, Alla E.; Shikov, Anatoly ...; Lograsso, Thomas ...; Isaev, Eyvas; Johansson, Börje; visa fler...; Daemen, Luke L.; visa färre...

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