@article{92f21a63fe6c42a1ae29e02634ccbc01,
title = "Direct visualization of coexisting channels of interaction in CeSb",
abstract = "Our understanding of correlated electron systems is vexed by the complexity of their interactions. Heavy fermion compounds are archetypal examples of this physics, leading to exotic properties that weave magnetism, superconductivity and strange metal behavior together. The Kondo semimetal CeSb is an unusual example where different channels of interaction not only coexist, but have coincident physical signatures, leading to decades of debate about the microscopic picture describing the interactions between the f moments and the itinerant electron sea. Using angle-resolved photoemission spectroscopy, we resonantly enhance the response of the Ce f electrons across the magnetic transitions of CeSb and find there are two distinct modes of interaction that are simultaneously active, but on different kinds of carriers. This study reveals how correlated systems can reconcile the coexistence of different modes on interaction—by separating their action in momentum space, they allow their coexistence in real space.",
author = "Sooyoung Jang and Robert Kealhofer and Caolan John and Spencer Doyle and Hong, {Ji Sook} and Shim, {Ji Hoon} and Q. Si and O. Erten and Denlinger, {Jonathan D.} and Analytis, {James G.}",
note = "Funding Information: We would like to thank P. Canfield, J. Checkelsky, and P. Coleman for helpful discussions. Funding: Synthesis and thermodynamic properties characterization by R.K. and J.G.A. was supported by the NSF under grant no. 1607753. S.J., R.K., and J.G.A. acknowledge support from the Gordon and Betty Moore Foundation{\textquoteright}s EPiQS Initiative through grant no. GBMF4374. This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05-CH11231. R.K. acknowledges support by the NSF Graduate Research Fellowship, grant no. DGE-1106400. J.H.S. and J.-S.H. were supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP; no. 2015R1A2A1A15051540). The work at Rice University is supported by the NSF grant no. DMR-1611392, the Robert A. Welch Foundation grant no. C-1411, the ARO grant no. W911NF-14-1-0525, and a QuantEmX grant from ICAM and the Gordon and Betty Moore Foundation through grant no. GBMF5305. Q.S. acknowledges the hospitality of University of California at Berkeley. Publisher Copyright: Copyright {\textcopyright} 2019 The Authors, some rights reserved.",
year = "2019",
doi = "10.1126/sciadv.aat7158",
language = "English (US)",
volume = "5",
journal = "Science Advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "3",
}