TY - JOUR
T1 - Correlated Dirac semimetallic state with unusual positive magnetoresistance in strain-free perovskite SrIrO3
AU - Fujioka, J.
AU - Okawa, T.
AU - Yamamoto, A.
AU - Tokura, Y.
N1 - Funding Information:
This work was partly supported by a Grant-In-Aid for Science Research (No. 24224009 and No. 16H00981) from the MEXT, and by PRESTO, JST, Japan
Publisher Copyright:
© 2017 American Physical Society.
PY - 2017/3/3
Y1 - 2017/3/3
N2 - We investigated magnetotransport properties and charge dynamics of strain-free perovskite SrIrO3. Both the longitudinal and transverse magnetoresistivity (MR) are significantly enhanced with decreasing temperature, in accord with the evolution of the Dirac semimetallic state. The electron correlation effect in the Dirac state shows up as a dramatic change in charge dynamics with temperature and as an enhanced paramagnetic susceptibility. We propose that the field-induced topological transition of the Dirac node coupled to the enhanced paramagnetism causes the unique MR of correlated Dirac electrons.
AB - We investigated magnetotransport properties and charge dynamics of strain-free perovskite SrIrO3. Both the longitudinal and transverse magnetoresistivity (MR) are significantly enhanced with decreasing temperature, in accord with the evolution of the Dirac semimetallic state. The electron correlation effect in the Dirac state shows up as a dramatic change in charge dynamics with temperature and as an enhanced paramagnetic susceptibility. We propose that the field-induced topological transition of the Dirac node coupled to the enhanced paramagnetism causes the unique MR of correlated Dirac electrons.
UR - http://www.scopus.com/inward/record.url?scp=85014861245&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85014861245&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.95.121102
DO - 10.1103/PhysRevB.95.121102
M3 - Article
AN - SCOPUS:85014861245
VL - 95
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 12
M1 - 121102
ER -