Beilun WU, Laboratorio de Bajas Temperaturas y Altos Campos Magnéticos

Thursday Dec. 9 at 2:00 pm (GMT+1) Paris time

Amphi Charpak

Scanning Tunneling Microscopy at high magnetic fields

Laboratorio de Bajas Temperaturas y Altos Campos Magnéticos, Departamento de Física de la Materia Condensada, Instituto Nicolás Cabrera and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain

In this talk, I will discuss recent advances in our scanning tunneling microscopy and spectroscopy experiment at magnetic fields of 22 T. First, I will present improvements in the instrumentation that have allowed to build compact microscopes with which we have been able to make measurements up to 20 T. I will then discuss results obtained in iron pnictide superconductors. I will focus on the recent family of CaKFe4As4 materials, which have very high critical temperatures (up to 38 K) and present isotropic two gap superconductivity. I will show measurements of the properties of the vortex lattice and of the band structure, the latter obtained using quasiparticle interference. I will further present recent results on the vortex phase and the band structure of other iron pnictide superconductors.


Haut de page



À lire aussi...

Sven Badoux, Université de Sherbrooke

Jeudi 28 Septembre 2017 à 14h00 Amphi Urbain, Esc N 1ème etage Transport signatures of charge density wave order and the pseudogap critical point (…) 

> Lire la suite...

Markus Etzkorn, TU-Braunschweig, Germany

Next week, in addition to the regular seminar, a special seminar will be given on Tuesday April 18th at 10:00 am (Paris time) The seminar will (…) 

> Lire la suite...