Probing the pairing symmetry of the iron pnictides with electronic Raman scattering

نویسندگان

  • G. R. Boyd
  • T. P. Devereaux
  • P. J. Hirschfeld
  • V. Mishra
  • D. J. Scalapino
چکیده

G. R. Boyd, T. P. Devereaux, 3 P. J. Hirschfeld, V. Mishra, and D. J. Scalapino Department of Physics, University of Florida, Gainesville, FL 32611, USA 2 Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025 3 Geballe Laboratory for Advanced Materials, Departments of Physics and Applied Physics, Stanford University, CA 94305. Department of Physics, University of California, Santa Barbara, CA 93106-9530 USA

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Screening of the Raman response in multiband superconductors: Application to iron pnictides

We performed model calculations of Raman responses for multiband two-dimensional superconductors. The multiband effects of screening in the A1g symmetry channel were investigated analytically and numerically for a band-structure model mimicking angle-resolved photoemission spectroscopy data on iron-pnictide materials. An acceptable agreement between our model calculations and recent experimenta...

متن کامل

In-gap quasiparticle excitations induced by non-magnetic Cu impurities in Na(Fe0.96Co0.03Cu0.01)As revealed by scanning tunnelling spectroscopy

The origin of superconductivity in the iron pnictides remains unclear. One suggestion is that superconductivity in these materials has a magnetic origin, which would imply a sign-reversal s(±) pairing symmetry. Another suggests it is the result of orbital fluctuations, which would imply a sign-equal s(++) pairing symmetry. There is no consensus yet which of these two distinct and contrasting pa...

متن کامل

Impact of nematicity on the competing superconducting instabilities of the iron pnictides

Magnetic fluctuations have been proposed not only to give rise to unconventional pairing states in iron pnictides and chalcogenides, but also to be responsible for an emergent electronic nematic transition that breaks the tetragonal symmetry of the system down to orthorhombic. In this talk, we discuss the interplay between nematicity and superconductivity using both a phenomenological approach ...

متن کامل

Perturbation Theory of High-Tc Superconductivity in Iron Pnictides

High-transition-temperature superconductivity discovered recently in iron pnictides is analyzed within a perturbation theory. Specifically, the probable pairing symmetry, the doping dependence of the transition temperature and a pairing mechanism etc. are studied by solving the Eliashberg equation for many-band(2and 5-band) Hubbard models with realistic electronic structures. The effective pair...

متن کامل

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 کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009