Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

High Temperature Singlet-Based Magnetism from Hund's Rule Correlations



Lin Miao, Rourav Basak, Sheng NMN Ran, Yishuai Xu, Erica Kotta, Haowei He, Jonathan D. Denlinger, Yi-De Chuang, Yang Zhao, Zhijun Xu, Jeffrey W. Lynn, J. R. Jeffries, Shanta Ranjan Saha, Ioannis Giannakis, Pegor Aynajian, Chang-Jong Kang, Yilin Wang, Gabriel Kotliar, Nicholas Butch, L. Andrew Wray


Novel electronic phenomena frequently form in heavy fermions as a consequence of the mutual nature of localization and itineracy of f-electrons. On the magnetically ordered side of the heavy fermion phase diagram, f-moments are expected to be localized and decoupled from the Fermi surface. It remains ambiguous and puzzling whether a Kondo-lattice can develop inside the magnetically ordered phase. Using spectroscopic imaging with the scanning tunneling microscope, complemented by neutron scattering, x-ray absorption spectroscopy, and dynamical mean-field theory, we probe the electronic states in the antiferromagnetic USb2 as a function of temperature. We visualize an antiferromagnetic gap at high temperatures (T < TN 200 K) within which Kondo-hybridization gradually develops below Tcoh 80 K. Our dynamical mean-field theory calculations indicate the antiferromagnetism and Kondo-lattice to reside predominantly on different (spin-orbit coupled) f-orbitals, offering new perception into how these two phenomena coexist in heavy heavy fermions. Finally, at T* = 45 K we discover a novel electronic transition through the abrupt emergence of non-trivial 5f quasiparticles that share some resemblance to the "hidden order" phase of URu2Si2.
Nature Communications


Kondo lattice, antiferromagnet


Miao, L. , Basak, R. , Ran, S. , Xu, Y. , Kotta, E. , He, H. , Denlinger, J. , Chuang, Y. , Zhao, Y. , Xu, Z. , Lynn, J. , Jeffries, J. , Saha, S. , Giannakis, I. , Aynajian, P. , Kang, C. , Wang, Y. , Kotliar, G. , Butch, N. and Wray, L. (2019), High Temperature Singlet-Based Magnetism from Hund's Rule Correlations, Nature Communications, [online], (Accessed May 25, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created February 6, 2019, Updated October 12, 2021