|
Title
|
In-plane magnetoresistance on the surface of topological insulator
|
|
Type
|
JournalPaper
|
|
Keywords
|
Topological Insulators, Magneto-Resistance, Ferromagnetism
|
|
Abstract
|
We study the tunneling magneto-transport properties of the Ferromagnetic Insulator-Normal InsulatorFerromagnetic Insulator ðFjNjFÞ and Ferromagnetic Insulator-Barrier Insulator-Ferromagnetic Insulator ðFjBjFÞ junctions on the surface oftopological insulator in which in-planemagnetization directions ofboth ferromagnetic sides can be parallel and antiparallel. We derive analytical expressions for electronic conductances of the two mentioned junctions with both parallel and antiparallel directions of magnetization and using them calculate the magnetoresistance ofthe two junctions. We use thin barrier approximation for investigating the FjBjF junction. We find that although magnetoresistance of the FjNjF and FjBjF junctions are tunable by changing the strength of magnetization texture, they show different behaviors with variation of magnetization. In contrast to the magnetoresistance of FjNjF, magnetoresistance of FjBjF junctions shows very smooth enhance by increasing the strength ofmagnetization. We suggest an experimental set up to detect our predicted effects.
|
|
Researchers
|
Yousef Rahnavard (Third Researcher), Mohammad Alidoust (Second Researcher), Gholamreza Rashedi (Fourth Researcher), morteza salehi (First Researcher)
|