Charge order in NaV2O5 studied by EPR |
| |
Authors: | Lohmann Krug Von Nidda H Eremin Loidl Obermeier Horn |
| |
Institution: | Experimentalphysik V, EKM, Institut fur Physik, Universitat Augsburg, D-86135 Augsburg, Germany. |
| |
Abstract: | We present angular dependent EPR measurements in NaV2O5 at X-band frequencies in the temperature range 4.2=T=670 K. A detailed analysis in terms of the antisymmetric Dzyaloshinski-Moriya and the anisotropic exchange interactions yields the following scheme of charge order: On decreasing temperature a quarter-filled ladder with strong charge disproportions, existing for T>/=100 K, is followed by zigzag charge-order fluctuations which become long range and static below T(SP) = 34 K. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|