Field-controlled phase separation at the impurity-induced magnetic ordering in the spin-Peierls Magnet CuGeO3.

نویسندگان

  • V N Glazkov
  • A I Smirnov
  • H-A Krug von Nidda
  • A Loidl
  • K Uchinokura
  • T Masuda
چکیده

The paramagnetic fraction surviving at the impurity-induced antiferromagnetic phase transition in the spin-Peierls magnet CuGeO3 is found to increase with an external magnetic field. This effect is explained by the competition of the Zeeman interaction and of the exchange interaction of local antiferromagnetic clusters formed on the spin-gap background near impurities.

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عنوان ژورنال:
  • Physical review letters

دوره 94 5  شماره 

صفحات  -

تاریخ انتشار 2005