TY - JOUR
T1 - Orbital nematic instability in the two-orbital Hubbard model
T2 - Renormalization-group + constrained RPA analysis
AU - Tsuchiizu, Masahisa
AU - Ohno, Yusuke
AU - Onari, Seiichiro
AU - Kontani, Hiroshi
PY - 2013/7/30
Y1 - 2013/7/30
N2 - Motivated by the nematic electronic fluid phase in Sr3Ru 2O7, we develop a combined scheme of the renormalization-group method and the random-phase-approximation-type method, and analyze orbital susceptibilities of the (dxz, dyz)- orbital Hubbard model with high accuracy. It is confirmed that the present model exhibits a ferro-orbital instability near the magnetic or superconducting quantum criticality, due to the Aslamazov-Larkin-type vertex corrections. This mechanism of orbital nematic order presents a natural explanation for the nematic order in Sr3Ru2O7, and is expected to be realized in various multiorbital systems, such as Fe-based superconductors.
AB - Motivated by the nematic electronic fluid phase in Sr3Ru 2O7, we develop a combined scheme of the renormalization-group method and the random-phase-approximation-type method, and analyze orbital susceptibilities of the (dxz, dyz)- orbital Hubbard model with high accuracy. It is confirmed that the present model exhibits a ferro-orbital instability near the magnetic or superconducting quantum criticality, due to the Aslamazov-Larkin-type vertex corrections. This mechanism of orbital nematic order presents a natural explanation for the nematic order in Sr3Ru2O7, and is expected to be realized in various multiorbital systems, such as Fe-based superconductors.
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U2 - 10.1103/PhysRevLett.111.057003
DO - 10.1103/PhysRevLett.111.057003
M3 - Article
AN - SCOPUS:84881506411
SN - 0031-9007
VL - 111
JO - Physical Review Letters
JF - Physical Review Letters
IS - 5
M1 - 057003
ER -