Visualization of Local Magnetic Moments Emerging from Impurities in Hund's Metal States of FeSe
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Visualization of Local Magnetic Moments Emerging from Impurities in Hund's Metal States of FeSe. / Song, Sang Yong; Martiny, J. H. J.; Kreisel, A.; Andersen, B. M.; Seo, Jungpil.
In: Physical Review Letters, Vol. 124, No. 11, 117001, 17.03.2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Visualization of Local Magnetic Moments Emerging from Impurities in Hund's Metal States of FeSe
AU - Song, Sang Yong
AU - Martiny, J. H. J.
AU - Kreisel, A.
AU - Andersen, B. M.
AU - Seo, Jungpil
PY - 2020/3/17
Y1 - 2020/3/17
N2 - 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.
AB - 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.
KW - NEMATICITY
KW - SUPERCONDUCTIVITY
KW - ORDER
U2 - 10.1103/PhysRevLett.124.117001
DO - 10.1103/PhysRevLett.124.117001
M3 - Journal article
C2 - 32242691
VL - 124
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 11
M1 - 117001
ER -
ID: 247443869