About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
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| Symposium
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Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
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| Presentation Title |
Anomalous Hall Effect in n-Type Cr-Doped Sb2Te3 Magnetic Topological Insulator |
| Author(s) |
Ali Sarikhani, Mathew Pollard, Jacob Cook, Qiu Sheng, Seng Huat Lee, Laleh Avazpour, Jack Crewse, William Fahrenholtz, Guang Bian, Yew San Hor |
| On-Site Speaker (Planned) |
Ali Sarikhani |
| Abstract Scope |
The exploration of topological Dirac surface states is significant in the realms of condensed matter physics and future technological innovations. Among the materials garnering attention is Sb2Te3, a compound that theoretically exhibits topological insulating properties. However, its inherent p-type nature prevents the direct experimental verification of its Dirac surface state due to the Fermi level's alignment with the valence band. In this study, by doping Cr atoms into the Sb2Te3, n-type behavior is observed in the Hall resistivity measurements. Remarkably, the Cr-doped Sb2Te3 not only shows ferromagnetism with a high transition temperature of approximately 170 K, but also exhibits an anomalous Hall effect. These properties spotlight its potential as an n-type magnetic topological insulator, opening new avenues for applications in spintronics and quantum devices. |