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    • Ising phases of Heisenberg ladders in a magnetic field 

      Penc, Karlo; Fouet, Jean-Baptiste; Miyahara, Shin; Tchernyshyov, Oleg; Mila, Frédéric (American Physical Society, 2007-09-14)
      We show that Dzyaloshinskii-Moriya (DM) interactions can substantially modify the phase diagram of spin-1/2 Heisenberg ladders in a magnetic field provided they compete with exchange. For nonfrustrated ladders, they induce ...