2012 Fiscal Year Final Research Report
Research on spin-orbit interaction in 5d electron oxides by means of spin Hall effect
| Project/Area Number |
22340108
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | The Institute of Physical and Chemical Research |
|---|
Principal Investigator |
MATSUNO Jobu 独立行政法人理化学研究所, 高木磁性研究室, 専任研究員 (00443028)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
FUKUMA Yasuhiro 独立行政法人理化学研究所, 量子ナノ磁性研究チーム, 客員研究員 (90513466)
FUJIWARA Kohei 独立行政法人理化学研究所, 高木磁性研究室, 基礎科学特別研究員 (50525855)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Keywords | 強相関系 / スピン・軌道相互作用 / 5d電子系 / スピンホール効果 / スピントロニクス |
|---|
| Research Abstract |
We detected inverse spin Hall effect of 5d transition-metal oxide IrO_2. Its spin Hall resistivity, defined as conversion efficiency from spin current to voltage, is about as ten times as the value of Pt, indicating that spin-orbit interaction is dominant in transport properties of 5d transition-metal oxides. The result demonstrates that these oxides are promising materials as a spin-current detector. We also found that artificial superlattices consisting of SrIrO_3 and SrTiO_3 belong to a novel type of a Mott insulator. We clarified that cooperation between electron correlation and spin-orbit interaction is affected by controlled dimensionality.
|
Research Products
(20 results)
