Quantum geometry in condensed matter

T Liu, XB Qiang, HZ Lu, XC **e - National Science Review, 2024 - academic.oup.com
One of the most celebrated accomplishments of modern physics is the description of
fundamental principles of nature in the language of geometry. As the motion of celestial …

Quantum geometry induced nonlinear transport in altermagnets

Y Fang, J Cano, SAA Ghorashi - Physical Review Letters, 2024 - APS
Quantum geometry plays a pivotal role in the second-order response of PT-symmetric
antiferromagnets. Here we study the nonlinear response of 2D altermagnets protected by C …

Tunable moiré materials for probing Berry physics and topology

PC Adak, S Sinha, A Agarwal… - Nature Reviews Materials, 2024 - nature.com
Berry curvature physics and quantum geometric effects have been instrumental in
advancing topological condensed matter physics in recent decades. Although Landau level …

Evidence for chiral graviton modes in fractional quantum Hall liquids

J Liang, Z Liu, Z Yang, Y Huang, U Wurstbauer… - Nature, 2024 - nature.com
Exotic physics could emerge from interplay between geometry and correlation. In fractional
quantum Hall (FQH) states, novel collective excitations called chiral graviton modes (CGMs) …

Unification of nonlinear anomalous Hall effect and nonreciprocal magnetoresistance in metals by the quantum geometry

D Kaplan, T Holder, B Yan - Physical review letters, 2024 - APS
The quantum geometry has significant consequences in determining transport and optical
properties in quantum materials. Here, we use a semiclassical formalism coupled with …

Quantum geometry induced third-order nonlinear transport responses

D Mandal, S Sarkar, K Das, A Agarwal - Physical Review B, 2024 - APS
Nonlinear transport phenomena offer an exciting probe into the band geometry and
symmetry properties of a system. While most studies on nonlinear transport have looked at …

Orbital Magneto-Nonlinear Anomalous Hall Effect in Kagome Magnet

L Wang, J Zhu, H Chen, H Wang, J Liu, YX Huang… - Physical Review Letters, 2024 - APS
It has been theoretically predicted that perturbation of the Berry curvature by electromagnetic
fields gives rise to intrinsic nonlinear anomalous Hall effects that are independent of …

Nonlinear Hall effect on a disordered lattice

R Chen, ZZ Du, HP Sun, HZ Lu, XC **e - Physical Review B, 2024 - APS
The nonlinear Hall effect has recently attracted significant interest due to its potential as a
promising spectral tool and for device applications. A theory of the nonlinear Hall effect on a …

Intrinsic nonlinear Ohmic current

YD Wang, ZF Zhang, ZG Zhu, G Su - Physical Review B, 2024 - APS
It is known that intrinsic currents in magnetic metals often appear in the direction
perpendicular to the external field for linear and nonlinear responses. Distinct from three …

Intrinsic nonlinear Hall detection of the Néel vector for two-dimensional antiferromagnetic spintronics

J Wang, H Zeng, W Duan, H Huang - Physical Review Letters, 2023 - APS
The respective unique merit of antiferromagnets and two-dimensional (2D) materials in
spintronic applications inspires us to exploit 2D antiferromagnetic spintronics. However, the …