Magnetic ordering caused by a disorder in quasi-one-dimensional spin systems and non-Fermi-liquid systems

A. A. Zvyagin, A. V. Makarova
2004 Low temperature physics (Woodbury, N.Y., Print)  
In this Letter we show that a strong disorder in the distribution of exchange couplings between magnetic impurities and hosts in quantum spin chains and non-Fermi-liquid rare earth and actinide compounds can be the reason for magnetic orderings in these systems at low temperatures. * Another reason, which can cause the non-Fermi-liquid behavior, is the presence of a quantum critical point: Fluctuations of an order parameter interact with itinerant electrons and can cause low-temperature
more » ... temperature divergencies of thermodynamic characteristics [2, 3] .
doi:10.1063/1.1808202 fatcat:ngx3cxyi3jatpfcegi6otn7yze