Journal
PHYSICAL REVIEW LETTERS
Volume 106, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.206805
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Funding
- U.S. NSF [CAREER-0645299, 1056625]
- DOE [DE-SC0002554, AC03-76SF00098, FG02-07ER46352]
- China 973 Program [2010CB923000]
- Sino-Swiss Science and Technology Cooperation (SSSTC)
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1056625] Funding Source: National Science Foundation
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We study interference patterns of a magnetically doped topological insulator Bi2-xFexTe3+d by using Fourier transform scanning tunneling spectroscopy and observe several new scattering channels. A comparison with angle-resolved photoemission spectroscopy allows us to unambiguously ascertain the momentum-space origin of distinct dispersing channels along high-symmetry directions and identify those originating from time-reversal symmetry breaking. Our analysis also reveals that the surface state survives far above the energy where angle-resolved photoemission spectroscopy finds the onset of continuum bulk bands.
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