Cornell University

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LASSP & AEP Seminar - Srinivas Raghu - Stanford University

Tuesday, September 24, 2019 at 12:20pm

700 Clark Hall

Hosted by Eun-ah Kim

Robust dx2y2  Superconductivity in Infinite-Layer Nickelates

Abstract: Motivated by the recent observation of superconductivity in Strontium doped NdNiO$_2$ (which we will review), we construct a weak coupling theory of unconventional superconductivity in this system.  Starting with first principles calculations, we construct two distinct tight-binding models, a simpler single-orbital as well as a  three-orbital model, both of which capture the key low energy degrees of freedom to varying degree of accuracy.  We study the superconducting instability in both models in the weak-coupling limit.  We find that in both cases, the dominant pairing tendency is in the d$_{x^2-y^2}$ channel, analogous to the cuprate superconductors.  

Poster

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Event Type

Seminar

Departments

LASSP, Applied and Engineering Physics

Tags

lassp_and_aep_seminar

Contact E-Mail

lmr268@cornell.edu

Contact Name

Lea Reagan

Contact Phone

6072559684

Speaker

Srinivas Raghu

Speaker Affiliation

Stanford University

Dept. Web Site

http://sitp.stanford.edu/people/srinivas-raghu

Open To

Public

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