Spin fluctuations and quantum criticality in iron doped MnSi
In recent years complex forms of magnetic order based on spin chirality in noncentrosymmetric systems has attracted great interest in condensed matter physics. Among many systems, MnSi is ideally suited to study the properties of unconventional magnetic states. Recent measurements on the spin structure and its dynamical properties of MnSi and Mn(0.9)Fe(0.1)Si yielded evidence for the presence of a chiral spin liquid phase characterized by a constant integrated magnetic intensity in a temperature range of 1K above the ordering temperature. With the proposed experiment we would like to extend our studies to higher iron concentrations close to the quantum critical point, where the magnetic phase transition is suppressed to zero temperature. The expected results will show if the chiral spin liquid phase survives close to the quantum critical point and, therefore test the generality of this phase as a precursor to helical magnetic order in Mn(1-x)Fe(x)Si.
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WEBER Frank; BANNENBERG Lars Johannes; LAMAGO DANIEL; PAPPAS Catherine; QIAN Feng-Jiao and STEFFENS Paul. (2018). Spin fluctuations and quantum criticality in iron doped MnSi. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1568
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