Resonant impurity states in the d-density-wave phase |
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Authors: | Morr Dirk K |
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Institution: | Department of Physics, University of Illinois at Chicago, 60607, USA. |
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Abstract: | We study the electronic structure near impurities in the d-density-wave (DDW) state, a possible candidate phase for the pseudogap region of the high-temperature superconductors. We show that the density of states near a nonmagnetic impurity in the DDW state is qualitatively different from that in a superconductor with dx(2)(-y(2)) symmetry. Thus, the electronic structure near impurities can provide insight into the nature of the two phases recently observed by scanning tunneling microscopy experiments in the superconducting state of underdoped Bi-2212 compounds. |
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