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arXiv · 1603.03367

High pressure magnetic state of MnP probed by means of muon-spin rotation

R. Khasanov·A. Amato·P. Bonfà·Z. Guguchia·H. Luetkens·E. Morenzoni·R. De Renzi·N. D. Zhigadlo
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Abstract

We report a detailed $μ$SR study of the pressure evolution of the magnetic order in the manganese based pnictide MnP, which has been recently found to undergo a superconducting transition under pressure once the magnetic ground state is suppressed. Using the muon as a volume sensitive local magnetic probe, we identify a ferromagnetic state as well as two incommensurate helical states (with propagation vectors ${\bf Q}$ aligned along the crystallographic $c-$ and $b-$directions, respectively) which transform into each other through first order phase transitions as a function of pressure and temperature. Our data appear to support that the magnetic state from which superconductivity develops at higher pressures is an incommensurate helical phase.

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R. Khasanov, A. Amato, P. Bonfà, Z. Guguchia, H. Luetkens, E. Morenzoni, R. De Renzi, N. D. Zhigadlo. 2016-03-10. High pressure magnetic state of MnP probed by means of muon-spin rotation. https://doi.org/10.1103/physrevb.93.180509

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