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Title: Spin-orbit coupling driven orbital-selective doping effect in Sr 2 Ru 1 - x Ir x O 4

Journal Article · · Physical Review B
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  1. Institute for Basic Science, Seoul (Korea, Republic of). Center for Correlated Electron Systems; Seoul National Univ. (Korea, Republic of)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  3. Yonsei Univ., Seoul (Korea, Republic of)
  4. Institute for Basic Science, Seoul (Korea, Republic of). Center for Correlated Electron Systems; Seoul National Univ. (Korea, Republic of). Research Institute of Advanced Materials
  5. National Institute of Advanced Industrial Science and Technology, Tsukuba (Japan)

Orbital-selective phenomena in mutliorbital systems have received much attention due to their uniqueness as well as possible connections to other phenomena. As orbital-selectiveness is mostly related to the crystal structure, finding a new control parameter other than structure would be of significant importance. Here in this paper we report discovery of an orbital-selective doping effect in Sr 2 Ru 1 - x Ir x O 4 (SRIO). Our systematic electronic structure study of SRIO reveals an anomalous orbital-selective doping effect and concomitant Lifshitz transitions (LTs) in the γ band. With the help of a tight-binding calculation, we find that the orbital-selective doping effect is due to variation in the spin-orbit coupling (SOC) strength. Our findings not only elucidate the mechanism of LTs in the γ band in SRIO but may also open new avenues for novel SOC-controlled orbital-selective phenomena.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1823055
Journal Information:
Physical Review B, Vol. 103, Issue 8; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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