# Density functional theory based investigation of heavy fermion band candidates in triplet superconductor UTe2

Source: [Density functional theory based investigation of heavy fermion band candidates in triplet superconductor UTe2](<https://www.sota2.com/research/paper/68fa482e1e209131ce92dca5>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:54:50.137Z

Authors: Shouzheng Liu, L. Andrew Wray

Published: 2024-10-04T18:14:25.000Z

## Abstract

The compound UTe2 is of great recent interest as a spin triplet superconductor that is thought to realize a topologically nontrivial superconducting order parameter. Though UTe2 is considered to be a heavy fermion material, only light-electron Fermi surfaces have been compellingly identified, while a possible heavy electron Fermi surface near the momentum space Z-point has been the subject of more speculative and incongruent interpretations based on density functional theory (DFT+U) and experimental measurements. Here we explore the DFT+U band structure within a tight binding model framework to identify emergence mechanisms for heavy fermion Fermi surfaces. Applying a Gutzweiller-like renormalization term to f-electron kinetics is found to distort the lowest energy f electron band from a saddle point to a local minimum at the Z-point, introducing a shallow Fermi pocket and greatly improving compatibility with recent experiments.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2410.03840>)

[PDF](<https://arxiv.org/pdf/2410.03840.pdf>)