Abstract
The magnetic ordering transition temperature in MnSi decreases with increasing pressure and tends towards absolute zero near 15 kbar. As the critical pressure is approached, we observe a crossover from a conventional transition of second order to one of weak first order. The crossover point is found to be near a minimum in the inverse susceptibility as a function of temperature. A qualitative description of this behaviour is given in terms of a temperature dependent renormalisation of the coefficients in a sixth order Landau expansion for the free energy.
Originalsprache | Englisch |
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Seiten (von - bis) | 847-849 |
Seitenumfang | 3 |
Fachzeitschrift | Physica B: Condensed Matter |
Jahrgang | 206-207 |
Ausgabenummer | C |
DOIs | |
Publikationsstatus | Veröffentlicht - 1 Feb. 1995 |
Extern publiziert | Ja |