Magnetic Field and Pressure Dependence of Small Angle Neutron Scattering in MnSi

Journal Article · Fri Oct 12 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.156406· OSTI ID:21024270

Pfleiderer, C ^[1]; Reznik, D; Pintschovius, L ^[2]; Haug, J ^[3]

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1. Physikalisches Institut, Universitaet Karlsruhe, Wolfgang-Gaede-Str. 1, D-76128 Karlsruhe (Germany)
2. Forschungszentrum Karlsruhe, Institut fuer Festkoerperphysik, D-76121 Karlsruhe (Germany)
3. Hahn-Meitner-Institut, Glienicker Strasse 100, D-14109 Berlin (Germany)

We report small angle neutron scattering of spontaneous and magnetic field aligned components of the helical spin polarization in MnSi for temperatures T down to 0.35 K, at pressures p up to 21 kbar, and magnetic field B up to 0.7 T. The parameter range of our study spans the first order transition between helical order and partial magnetic order at p{sub c}=14.6 kbar, which coincides with the onset of an extended regime of non-Fermi liquid resistivity. Our study suggests that MnSi above p{sub c} is not dominated by the remnants of the first order transition at p{sub c}, but that an unidentified mechanism favors stabilization of a new ground state other than helical order.

• OSTI ID: 21024270
• Journal Information: Physical Review Letters, Vol. 99, Issue 15; Other Information: DOI: 10.1103/PhysRevLett.99.156406; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
36 MATERIALS SCIENCE
FERMI GAS
GROUND STATES
MAGNETIC FIELDS
MANGANESE SILICIDES
NEUTRON DIFFRACTION
PRESSURE DEPENDENCE
PRESSURE RANGE GIGA PA
SMALL ANGLE SCATTERING
SPIN ORIENTATION
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K