Negligible spin–charge conversion in Bi films and Bi/Ag(Cu) bilayers
- Johns Hopkins Univ., Baltimore, MD (United States); Fudan Univ., Shanghai (China)
- Johns Hopkins Univ., Baltimore, MD (United States)
Spin pumping experiments using ferromagnetic metals have reported highly efficient spin–charge conversion in Bi and at the Bi/Ag interface, possibly due to the inverse Rashba–Edelstein effect. However, longitudinal spin Seebeck effect experiments using the yttrium iron garnet ferrimagnetic insulator in Bi films and Bi/Ag bilayers do not show evidence of appreciable spin-to-charge conversion except the large Nernst signal inherent to Bi. These contrasting conclusions highlight the differences between magnetic metals and magnetic insulators as spin current injectors. Only the detected voltages that adhere to the inverse spin Hall effect of jC = (2e/h)θSHjS x σ are due to spin currents.
- Research Organization:
- Johns Hopkins Univ., Baltimore, MD (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); National Nature Science Foundation of China
- Grant/Contract Number:
- SC0009390
- OSTI ID:
- 1851178
- Alternate ID(s):
- OSTI ID: 1783396; OSTI ID: 1870959
- Journal Information:
- APL Materials, Vol. 9, Issue 5; ISSN 2166-532X
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
Magnetic materials
Thin films
Hall effect
Polycrystalline material
Nanomagnets
Ferromagnetism
Spin pumping
Spin Hall effect
Thermoelectricity
negligible spin to charge conversion in Bi
Nernst effect
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
77 NANOSCIENCE AND NANOTECHNOLOGY
Magnetic materials
Thin films
Hall effect
Polycrystalline material
Nanomagnets
Ferromagnetism
Spin pumping
Spin Hall effect
Thermoelectricity
negligible spin to charge conversion in Bi
Nernst effect