by Mizokawa, T, Tjeng, LH, Sawatzky, GA, Ghiringhelli, G and Tjernberg, O, Brookes, NB, Fukazawa, H, Nakatsuji, S and Maeno, Y
Abstract:
O 1s x-ray absorption study of the Mott insulator Ca2RuO4 shows that the orbital population of the 4d t(2g) band dramatically changes with temperature. In addition, spin-resolved circularly polarized photoemission study of Ca2RuO4 shows that a substantial orbital angular momentum is induced in the Ru 4d t(2g) band. Based on the experimental results and model Hartree-Fock calculations, we argue that the cooperation between the strong spin-orbit coupling in the Ru 4d t(2g) band and the small distortion of the RuO6 octahedra causes the interesting changeover of the spin and orbital anisotropy as a function of temperature.
Reference:
Spin-orbit coupling in the Mott insulator Ca2RuO4 (Mizokawa, T, Tjeng, LH, Sawatzky, GA, Ghiringhelli, G and Tjernberg, O, Brookes, NB, Fukazawa, H, Nakatsuji, S and Maeno, Y), In PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, volume 87, 2001.
Bibtex Entry:
@article{ ISI:000170478300040, Author = {Mizokawa, T and Tjeng, LH and Sawatzky, GA and Ghiringhelli, G and Tjernberg, O and Brookes, NB and Fukazawa, H and Nakatsuji, S and Maeno, Y}, Title = {{Spin-orbit coupling in the Mott insulator Ca2RuO4}}, Journal = {{PHYSICAL REVIEW LETTERS}}, Year = {{2001}}, Volume = {{87}}, Number = {{7}}, Month = {{AUG 13}}, Abstract = {{O 1s x-ray absorption study of the Mott insulator Ca2RuO4 shows that the orbital population of the 4d t(2g) band dramatically changes with temperature. In addition, spin-resolved circularly polarized photoemission study of Ca2RuO4 shows that a substantial orbital angular momentum is induced in the Ru 4d t(2g) band. Based on the experimental results and model Hartree-Fock calculations, we argue that the cooperation between the strong spin-orbit coupling in the Ru 4d t(2g) band and the small distortion of the RuO6 octahedra causes the interesting changeover of the spin and orbital anisotropy as a function of temperature.}}, Publisher = {{AMER PHYSICAL SOC}}, Address = {{ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}}, Type = {{Article}}, Language = {{English}}, Affiliation = {{Mizokawa, T (Corresponding Author), Univ Tokyo, Dept Complex Sci & Engn, Tokyo 1130033, Japan. Univ Tokyo, Dept Complex Sci & Engn, Tokyo 1130033, Japan. Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands. European Synchrotron Radiat Facil, F-38043 Grenoble, France. Politecn Milan, INFM, Dipartimento Fis, S-10044 Stockholm, Sweden. KTH, S-10044 Stockholm, Sweden. Kyoto Univ, Kyoto 6068502, Japan. Japan Sci & Technol Corp, CREST, Kawaguchi, Saitama 3320012, Japan.}}, DOI = {{10.1103/PhysRevLett.87.077202}}, Article-Number = {{077202}}, ISSN = {{0031-9007}}, EISSN = {{1079-7114}}, Keywords-Plus = {{ELECTRONIC-STRUCTURE; LAYERED PEROVSKITE; SR2RUO4; SUPERCONDUCTIVITY; TRANSITION; STATES; CA2-XSRXRUO4; TRIPLET}}, Research-Areas = {{Physics}}, Web-of-Science-Categories = {{Physics, Multidisciplinary}}, ResearcherID-Numbers = {{Ghiringhelli, Giacomo/D-1159-2014 Tjeng, Liu Hao/B-8607-2019 Brookes, Nicholas B/C-6718-2019 Mizokawa, Takashi/E-3302-2015 Sawatzky, George A/D-2997-2012}}, ORCID-Numbers = {{Ghiringhelli, Giacomo/0000-0003-0867-7748 Tjeng, Liu Hao/0000-0002-0595-9312 Brookes, Nicholas B/0000-0002-1342-9530 Mizokawa, Takashi/0000-0002-7682-2348 }}, Number-of-Cited-References = {{27}}, Times-Cited = {{148}}, Usage-Count-Last-180-days = {{4}}, Usage-Count-Since-2013 = {{78}}, Journal-ISO = {{Phys. Rev. Lett.}}, Doc-Delivery-Number = {{463LU}}, Unique-ID = {{ISI:000170478300040}}, DA = {{2020-12-22}}, }
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