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26 April 2024 |
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STM Studies of the Electronic Structure of Vortex Cores in Bi2Sr2CaCu2O8+d | | S. H. Pan
; E.W. Hudson
; A.K. Gupta
; K-W Ng
; H. Eisaki
; S. Uchida
; J.C. Davis
; | | Date: |
27 May 2000 | | Subject: | Superconductivity | cond-mat.supr-con | | Abstract: | We report on low temperature scanning tunneling microscopy (STM) studies of the electronic structure of vortex cores in Bi2Sr2CaCu2O8+d (BSCCO). At the vortex core center, an enhanced density-of-states (DOS) is observed at energies near 7 meV. Spectroscopic imaging at these energies reveals an exponential decay of these ’core states’ with a decay length of 2.2(3) nm. The four-fold symmetry sometimes predicted for d-wave vortices is not seen in spectroscopic vortex images. A locally nodeless order parameter induced by the magnetic field may be consistent with these measurements. | | Source: | arXiv, cond-mat/0005484 | | Services: | Forum | Review | PDF | Favorites | |
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