Detecting sign-changing superconducting gap in LiFeAs using quasiparticle interference
نویسندگان
چکیده
منابع مشابه
Testing the sign-changing superconducting gap in iron-based superconductors with quasiparticle interference and neutron scattering.
We present a phenomenological calculation of the quasiparticle interference (QPI) pattern and inelastic neutron scattering (INS) spectra in iron-pnictide and layered iron-selenide compounds by using material specific band structure and superconducting (SC) gap properties. As both the QPI and the INS spectra arise due to scattering of the Bogolyubov quasiparticles, they exhibit a one-to-one corr...
متن کاملProbing the unconventional superconducting state of LiFeAs by quasiparticle interference.
A crucial step in revealing the nature of unconventional superconductivity is to investigate the symmetry of the superconducting order parameter. Scanning tunneling spectroscopy has proven a powerful technique to probe this symmetry by measuring the quasiparticle interference (QPI) which sensitively depends on the superconducting pairing mechanism. A particularly well-suited material to apply t...
متن کاملQuasiparticle interference and superconducting gap in Ca2−xNaxCuO2Cl2
Magnetic Materials Laboratory, RIKEN (The Institute of Physical and Chemical Research), Wako 351-0198, Japan CREST, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, USA CMPMS Department, Brookhaven National Laboratory, Upton, New York 11973, USA Département de Physique, Université de Sherbrooke, Sherbrooke, ...
متن کاملQuasiparticle 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 کاملProbing the order parameter of superconducting LiFeAs using Pb/LiFeAs and Au/LiFeAs point-contact spectroscopy
Xiaohang Zhang,1,* Bumsung Lee,2 Seunghyun Khim,2 Kee Hoon Kim,2 Richard L. Greene,1 and Ichiro Takeuchi3 1CNAM and Department of Physics, University of Maryland, College Park, Maryland 20742, USA 2CeNSCMR, Department of Physics and Astronomy, Seoul National University, Seoul 151-747, South Korea 3Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20...
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: Physical Review B
سال: 2018
ISSN: 2469-9950,2469-9969
DOI: 10.1103/physrevb.97.054519