Field-Tunable Quantum Metric in Few-Layer Phosphorene
Abstract
The quantum metric -- which quantifies the distance between quantum states -- is a fundamental component of the quantum geometric tensor, playing a crucial role in a wide range of physical phenomena. Its direct detection and control remains a challenge, requiring suitable material candidates. In this work, we present the emergence of a tunable quantum metric in a versatile two-dimensional material platform, namely, few-layer phosphorene. Using ab-initio-derived models, we show how electric fields can be used to substantially enhance the quantum metric as well as the associated quantum weight. Furthermore, we present a layer-dependent evolution of the quantum metric and its interplay with the electric field in this material. Our results establish few-layer phosphorene as a promising platform for exploring control over the quantum metric and the resulting metric responses in real materials.
Cite
@article{arxiv.2512.00914,
title = {Field-Tunable Quantum Metric in Few-Layer Phosphorene},
author = {Md Afsar Reja and Arka Bandyopadhyay and Awadhesh Narayan},
journal= {arXiv preprint arXiv:2512.00914},
year = {2025}
}