부산대학교 도서관

In order to study the dynamical properties of the S = 1/2 one-dimensional zigzag chain anti-ferromagnet PbCuP2O7, we performed high field electron spin resonance (ESR) measurements of powder and magnetically aligned samples of PbCuP2O7 by using pulsed magnetic fields up to 15 T in the temperature range from 1.7 to 265 K. Dynamical properties, such as the increases in the g-value and the linewidth at low temperature, are observed. By the aid of a direct numerical ESR calculation, the observed g-shift can be understood only by assuming the Dzyaloshinski-Moriya interaction in the system. This is a new approach to determine the Dzyaloshinski-Moriya interaction in a S = 1/2 one-dimensional antiferromagnet.