Carrier dependent ferromagnetism in chromium doped topological insulator Cry(BixSb1−x)2−yTe3

2012/07/18 by Bin Li, Qingyan Fan, Fuhao Ji +4 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Curie temperature #Doping #Electrical engineering #Electronic and Structural Properties of Oxides #Ferromagnetism #Hall effect #Magnetic field #Magnetic semiconductor #Magnetization #Physics #Quantum mechanics #Spintronics #Topological Materials and Phenomena #Topological insulator #Topology (electrical circuits) #cond-mat.mtrl-sci

paper · pdf · doi:10.1016/j.physleta.2013.05.020

6 pages, 3 figures

arxiv created 2012/07/18 · openalex publication_date 2013/05/15 · arxiv updated 2015/06/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

To understand the mechanism of ferromagnetism in topological insulator, we studied the structural, magnetic and transport characters of Cr y ( Bi x Sb 1 − x ) 2 − y Te 3 single crystals. The Curie temperature T C , which is determined from magnetization and anomalous Hall effect (AHE) measurements by Arrott plots, is found to be proportional to y Cr ⁎ p 1 / 3 , where p is the hole density. This fact supports a scenario of Ruderman–Kittel–Kasuya–Yoshida (RKKY) interaction with mean-field approximation.

Citations

• Topological field theory of time-reversal invariant insulators
• Inverse Spin-Galvanic Effect in the Interface between a Topological Insulator and a Ferromagnet
• Quantum Anomalous Hall Effect inHg1−yMnyTeQuantum Wells
• Anomalous Hall effect
• Majorana fermions in a tunable semiconductor device
• Topological insulators and superconductors
• Inducing a Magnetic Monopole with Topological Surface States
• Topological Insulators
• Chain of Majorana States from Superconducting Dirac Fermions at a Magnetic Domain Wall
• Low-temperature ferromagnetic properties of the diluted magnetic semiconductorSb2−xCrxTe3

Cited by

• Investigation on the structural and magnetic properties of MxBi2–xTe3 (M = Gd, Fe, Cr) (x = 0, 1) using colloidal hot-injection method