Research on the Magnetism of Heavy-Fermion Systems

A special issue of Magnetism (ISSN 2673-8724).

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1031

Special Issue Editors


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Guest Editor
The Institute of High Energy Physics of the Chinese Academy of Sciences, Dongguan 523777, China
Interests: heavy-fermion superconductivity; topological superconductivity; quantum magnetism; neutron scattering

E-Mail Website
Guest Editor
School of Physics, Sun Yat-sen University, Guangzhou 510275, China
Interests: quantum materials; strong coraltion materials; superconductors

Special Issue Information

Dear Colleagues,

Heavy-fermion systems, as a prototype of correlated electron systems, feature a rich variety of quantum ground states, including unconventional superconductivity, antiferromagnetism, ferromagnetism, non-fermi liquid states, spin liquids, and topological states. Due to the relatively low energy scale in heavy-fermion systems, these quantum states can be easily tuned with multiple methods, and the study of heavy-fermion physics has been a frontier in the fundamental research of quantum materials.

The aim of this Special Issue is to collate world-leading research on the latest exciting theoretical and experimental results in the field of heavy-fermion systems. We hope to provide a platform to present emergent phenomena, discuss the underlying physics, and suggest future research directions. Therefore, we seek original research articles and reviews in this Special Issue. Research areas may include (but are not limited to) the above-mentioned research fronts. 

We look forward to receiving your contributions. 

Dr. Junying Shen
Dr. Bing Shen
Guest Editors

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Keywords

  • heavy-fermion systems
  • magnetism
  • unconventional superconductivity
  • strongly correlated electronic states
  • quantum phase transition
  • topological states

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Published Papers (1 paper)

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Research

14 pages, 20914 KB  
Article
Effect of the Non-Magnetic Ion Doping on the Magnetic Behavior of MgCr2O4
by Fuxi Zhou, Zheng He, Donger Cheng, Han Ge, Wenjing Zhang, Xiao Wang, Pengfei Zhou, Wanju Luo, Zhengdong Fu, Xinzhi Liu, Liusuo Wu, Lunhua He, Yanchun Zhao and Erxi Feng
Magnetism 2025, 5(3), 19; https://doi.org/10.3390/magnetism5030019 - 25 Aug 2025
Viewed by 320
Abstract
Geometrically frustrated magnets exhibit exotic excitations due to competing interactions between spins. The spinel compound MgCr2O4, a three-dimensional Heisenberg antiferromagnet, hosts both spin-wave and spin-resonance modes, but the origin of its resonant excitations remains debated. Suppressing magnetic order via [...] Read more.
Geometrically frustrated magnets exhibit exotic excitations due to competing interactions between spins. The spinel compound MgCr2O4, a three-dimensional Heisenberg antiferromagnet, hosts both spin-wave and spin-resonance modes, but the origin of its resonant excitations remains debated. Suppressing magnetic order via non-magnetic doping can help isolate these modes in neutron scattering studies. We synthesized Ga3+ and Cd2+-doped MgCr2O4 via solid-state reaction and analyzed their structure and magnetism. Ga3+ doping (0–20%) causes anomalous lattice shrinkage due to site disorder from Ga3+ occupying both Mg2+ and Cr3+ sites. Magnetically, Ga3+ doping drives the system from the antiferromagnetic order to a spin-glass state, fully suppressing magnetic ordering at 20% doping. In contrast, Cd2+ replaces only Mg2+, expanding the lattice and meantime inducing strong spin-glass behavior. At 10% Cd2+, long-range antiferromagnetic order is entirely suppressed. Thus, 10% Cd-doped MgCr2O4 offers an ideal platform to study the resonant magnetic excitations without any spin-wave interference. Full article
(This article belongs to the Special Issue Research on the Magnetism of Heavy-Fermion Systems)
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