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Electronic Structure of Layered and Linear Chain Materials by Scanning Probe Microscopy

  • R.V. Coleman (a1), Z. Dai (a1), Y. Gong (a1), C.G. Slough (a1) and Q. Xue (a1)...

Abstract

Transition metal impurities such as Fe, Ni, and Co can be intercalated into the van der Waals gap of layer structure dichalcogenides and these modify the charge-density wave (CDW) structure and CDW energy gaps. Ordered superlattices associated with antiferromagnetic phases can be detected by both scanning tunneling microscopy (STM) and atomic force microscopy (AFM). STM spectroscopy indicates the formation of a mixed spin-density-wave (SDW) and CDW (SDWCDW) in the doped materials. The quasi-one dimensional trichalcogenide NbSe3 exhibits two CDW transitions and the presence of dilute transition metal impurities produces ordered superlattices due to long range screening of the impurities.

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[8] Zhenxi Dai, Slough, C.G., and Coleman, R.V., Phys. Rev. B 45, 9469 (1992).
[9] Xue, Q., Gong, Y., Slough, C.G., and Coleman, R.V. (unpublished).
[10] Slough, C. G., Dai, Z., Gong, Y., Xue, Q., Drake, D.L., and Coleman, R.V. (unpublished).
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