Abstract
We report the angular dependence of magnetoresistance in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface. We find that this interfacial magnetoresistance exhibits a similar angular dependence to the spin Hall magnetoresistance observed in ferromagnet/heavy metal bilayers, which has been so far discussed in the framework of the bulk spin Hall effect of the heavy metal layer. The observed magnetoresistance is in qualitative agreement with a theoretical model calculation including both Rashba spin-orbit coupling and an exchange interaction. Our result suggests that magnetic interfaces subject to spin-orbit coupling can generate a non-negligible contribution to the spin Hall magnetoresistance, and the interfacial spin-orbit coupling effect is therefore key to the understanding of various spin-orbit-coupling-related phenomena in magnetic/nonmagnetic bilayers.
| Original language | English |
|---|---|
| Article number | 064401 |
| Journal | Physical Review B |
| Volume | 96 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2017 Aug 1 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Interfacial Rashba magnetoresistance of the two-dimensional electron gas at the LaAlO3 / SrTiO3 interface. / Narayanapillai, Kulothungasagaran; Go, Gyungchoon; Ramaswamy, Rajagopalan; Gopinadhan, Kalon; Go, Dongwook; Lee, Hyun Woo; Venkatesan, Thirumalai; Lee, Kyoung Jin; Yang, Hyunsoo.
In: Physical Review B, Vol. 96, No. 6, 064401, 01.08.2017.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Interfacial Rashba magnetoresistance of the two-dimensional electron gas at the LaAlO3 / SrTiO3 interface
AU - Narayanapillai, Kulothungasagaran
AU - Go, Gyungchoon
AU - Ramaswamy, Rajagopalan
AU - Gopinadhan, Kalon
AU - Go, Dongwook
AU - Lee, Hyun Woo
AU - Venkatesan, Thirumalai
AU - Lee, Kyoung Jin
AU - Yang, Hyunsoo
PY - 2017/8/1
Y1 - 2017/8/1
N2 - We report the angular dependence of magnetoresistance in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface. We find that this interfacial magnetoresistance exhibits a similar angular dependence to the spin Hall magnetoresistance observed in ferromagnet/heavy metal bilayers, which has been so far discussed in the framework of the bulk spin Hall effect of the heavy metal layer. The observed magnetoresistance is in qualitative agreement with a theoretical model calculation including both Rashba spin-orbit coupling and an exchange interaction. Our result suggests that magnetic interfaces subject to spin-orbit coupling can generate a non-negligible contribution to the spin Hall magnetoresistance, and the interfacial spin-orbit coupling effect is therefore key to the understanding of various spin-orbit-coupling-related phenomena in magnetic/nonmagnetic bilayers.
AB - We report the angular dependence of magnetoresistance in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface. We find that this interfacial magnetoresistance exhibits a similar angular dependence to the spin Hall magnetoresistance observed in ferromagnet/heavy metal bilayers, which has been so far discussed in the framework of the bulk spin Hall effect of the heavy metal layer. The observed magnetoresistance is in qualitative agreement with a theoretical model calculation including both Rashba spin-orbit coupling and an exchange interaction. Our result suggests that magnetic interfaces subject to spin-orbit coupling can generate a non-negligible contribution to the spin Hall magnetoresistance, and the interfacial spin-orbit coupling effect is therefore key to the understanding of various spin-orbit-coupling-related phenomena in magnetic/nonmagnetic bilayers.
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U2 - 10.1103/PhysRevB.96.064401
DO - 10.1103/PhysRevB.96.064401
M3 - Article
VL - 96
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 6
M1 - 064401
ER -