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Visualization of Local Magnetic Moments Emerging from Impurities in Hund's Metal States of FeSe

Title
Visualization of Local Magnetic Moments Emerging from Impurities in Hund's Metal States of FeSe
Authors
Song, Sang YongMartiny, J. H. J.Kreisel, A.Andersen, B. M.Seo, Jungpil
DGIST Authors
Song, Sang Yong; Martiny, J. H. J.; Kreisel, A.; Andersen, B. M.; Seo, Jungpil
Issue Date
2020-03
Citation
Physical Review Letters, 124(11), 117001
Type
Article
Article Type
Article
Keywords
NEMATICITYSUPERCONDUCTIVITYORDER
ISSN
0031-9007
Abstract
Understanding the origin of the magnetism of high temperature superconductors is crucial for establishing their unconventional pairing mechanism. Recently, theory predicts that FeSe is close to a magnetic quantum critical point, and thus weak perturbations such as impurities could induce local magnetic moments. To elucidate such quantum instability, we have employed scanning tunneling microscopy and spectroscopy. In particular, we have grown FeSe film on superconducting Pb(111) using molecular beam epitaxy and investigated magnetic excitation caused by impurities in the proximityinduced superconducting gap of FeSe. Our study provides deep insight into the origin of the magnetic ordering of FeSe by showing the way local magnetic moments develop in response to impurities near the magnetic quantum critical point.
URI
http://hdl.handle.net/20.500.11750/11662
DOI
10.1103/PhysRevLett.124.117001
Publisher
American Physical Society
Related Researcher
  • Author Seo, Jungpil Nanospm Lab(Advanced Materials Research Group)
  • Research Interests Topological Matters; High Tc Superconductors; Low dimensional Quantum Matters
Files:
There are no files associated with this item.
Collection:
Department of Emerging Materials ScienceNanospm Lab(Advanced Materials Research Group)1. Journal Articles


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