Home
For authors
Submission status

Archive
Archive (English)
Current
   Volumes 113-120
   Volumes 93-112
      Volume 112
      Volume 111
      Volume 110
      Volume 109
      Volume 108
      Volume 107
      Volume 106
      Volume 105
      Volume 104
      Volume 103
      Volume 102
      Volume 101
      Volume 100
      Volume 99
      Volume 98
      Volume 97
      Volume 96
      Volume 95
      Volume 94
      Volume 93
Search
VOLUME 103 (2016) | ISSUE 5 | PAGE 365
Effect of magnetic field on the intermediate phase in Mn1-xFexSi: spin-liquid vs. fluctuations scenario
Abstract
We report results of the magnetic field influence on the chiral spin liquid state in Mn1-xFexSi single crystal with iron content x=0.108 in proximity of a hidden quantum critical point. The use of small angle neutron scattering data together with magnetic susceptibility measurements down to 0.4 K and precise magnetoresistance measurements in the temperature range 2-20 K in magnetic field up to 5 T allowed us to construct the magnetic phase diagram of this compound in which at low magnetic fields B<0.15 T an intermediate phase with short-range magnetic order exists in a wide temperature range 0.62<T<9.1 K. It was found that the increase of magnetic field first results in a suppression of transition into spiral phase with long-range magnetic order at very low temperatures, and then induces a transition of the intermediate phase into a spin-polarized (ferromagnetic) phase with lowering temperature. The temperature of this transition TSP increases with magnetic field logarithmically, T_{\text{SP}}\sim\log(B), and results in formation of a singular point on the magnetic phase diagram located at T \sim 8.5 K and B \sim 3.5 T, which may be either a triple or a critical point. The possible spin-liquid nature of the intermediate phase is discussed.