Holographic maps of quasiparticle interference
نویسندگان
چکیده
منابع مشابه
Quasiparticle scattering interference in superconducting iron pnictides
Using both two orbital and five orbital models, we investigate the quasiparticle interference QPI patterns in the superconducting SC state of iron-based superconductors. We compare the results for nonmagnetic and magnetic impurities in sign-changed s-wave cos kx · cos ky and sign-unchanged cos kx · cos ky SC states. While the patterns strongly depend on the chosen band structure details, the se...
متن کاملQuasiparticle interference in mono- and bilayer graphene
Scanning tunneling microscopy (STM) is a powerful method to determine the atomic structure and the morphology of 2-dimensional materials, while scanning tunneling spectroscopy (STS) gives access to their local density of electronic states. However, this determination alone does not directly yield the dispersive band structure, and certainly does not give access to more advanced electronic prope...
متن کاملQuasiparticle interference in iron-based superconductors
We systematically calculate quasiparticle interference QPI signatures for the whole phase diagram of iron-based superconductors. Impurities inherent in the sample together with ordered phases lead to distinct features in the QPI images that are believed to be measured in spectroscopic imaging-scanning tunneling microscopy. In the spin-density wave phase the rotational symmetry of the electronic...
متن کاملQuasiparticle interference, quasiparticle interactions, and the origin of the charge density wave in 2H-NbSe2.
We show that a small number of intentionally introduced defects can be used as a spectroscopic tool to amplify quasiparticle interference in 2H-NbSe2 that we measure by scanning tunneling spectroscopic imaging. We show, from the momentum and energy dependence of the quasiparticle interference, that Fermi surface nesting is inconsequential to charge density wave formation in 2H-NbSe2. We demonst...
متن کاملQuasiparticle interference on the surface of the topological insulator Bi2Te3
The quasiparticle interference of the spectroscopic imaging scanning tunneling microscopy has been investigated for the surface states of the large gap topological insulator Bi2Te3 through the T-matrix formalism. Both the scalar-potential scattering and the spin-orbit scattering on the warped hexagonal isoenergy contour are considered. While backscatterings are forbidden by time-reversal symmet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature Physics
سال: 2016
ISSN: 1745-2473,1745-2481
DOI: 10.1038/nphys3829