Emergence of novel magnetic order at finite temperature in overdoped pnictides

15 Nov 2018 Lupo Carla Roberts Thomas Julian Weber Cedric

We examine the temperature dependence of the magnetic ordering in the frustrated Heisenberg $J_1-J_2$ model in presence of two different kind of dopants: vacancies or magnetic impurities. We demonstrate that, irrespective to their magnetic ratio, the introduction of impurities quenches the order by disorder selection mechanism associated with an Ising-like phase transition at low temperatures and gives way to a $90^\circ$ (anticollinear) order ... (read more)

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  • STRONGLY CORRELATED ELECTRONS
  • SUPERCONDUCTIVITY