Mapping out the topological phase diagram of FeSn

Soumya Sankar; RUIZI LIU; Chengping ZHANG; Qifang Li; KUN QIAN; Jiangchang Zheng; Caiyun Chen; Zi Yang Meng; Kam Tuen Law; QIMING SHAO; Berthold Jaeck

Mapping out the topological phase diagram of FeSn

POSTER

Abstract

Metallic kagome magnets exhibit a flat band and a Dirac point in their electronic structure and long-range magnetic order. The combination of these properties creates favorable conditions to search for strongly correlated and topological electronic states. The near-ideal kagome band structure of the intermetallic kagome series X₁Y₁ offers opportunities to investigate the interplay between strong electronic correlations, topology, and magnetism.

We have used molecular beam epitaxy and electronic transport measurements to study the interplay of magnetism and band topology in thin films of the antiferromagnetic kagome metal FeSn. We will present results from a magnetic field and temperature dependent study of the anomalous Hall effect using transverse resistivity measurements. Combining these measurements with magnetic Monte-Carlo simulations and theoretical model calculations, we map out the topological phase diagram of FeSn over a large temperature range.

Presenters

Soumya Sankar

The Hong Kong University of Science and Technology, HKUST, Department of Physics, Clear Water Bay, Hongkong, HKUST

Authors

Soumya Sankar

The Hong Kong University of Science and Technology, HKUST, Department of Physics, Clear Water Bay, Hongkong, HKUST
RUIZI LIU

HKUST, Department of Electrical Engineering, Clear Water Bay, Hongkong, HKUST, Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
Chengping ZHANG

HKUST, Department of Physics, Clear Water Bay, Hongkong, The Hong Kong University of Science and Technology, HKUST
Qifang Li

HKU, Department of Physics, Pokfulam Road, Hong Kong and University of Tokyo, Department of Physics, Tokyo, HKUST, University of Tokyo
KUN QIAN

HKUST, Department of Electrical Engineering, Clear Water Bay, Hongkong, HKUST, Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
Jiangchang Zheng

The Hong Kong University of Science and Technology, HKUST, Department of Physics, Clear Water Bay, Hongkong, HKUST
Caiyun Chen

The Hong Kong University of Science and Technology, IAS,The Hong Kong University of Science and Technology,Hongkong, HKUST
Zi Yang Meng

HKU, Department of Physics, Pokfulam Road, Hong Kong, The University of Hong Kong, Hong Kong University
Kam Tuen Law

HKUST, Department of Physics, Clear Water Bay, Hongkong, Hong Kong University of Science and Technology, HKUST
QIMING SHAO

HKUST, Department of Electrical Engineering, Clear Water Bay, Hongkong, HKUST, Hong Kong University of Science and Technology, Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
Berthold Jaeck

HKUST, Department of Physics, Clear Water Bay, Hongkong, The Hong Kong University of Science and Technology