Lee, Sunghun In, Juneho Yoo, Youngdong Jo, Younghun Park, Yun Chang Kim, Hyung-jun Koo, Hyun Cheol Kim, Jinhee Kim, Bongsoo Wang, Kang L. 2024-01-20T14:30:32Z 2024-01-20T14:30:32Z 2021-09-04 2012-08 1530-6984 https://pubs.kist.re.kr/handle/201004/129043 A recent theoretical study suggested that Ag2Te is a topological insulator with a highly anisotropic Dirac cone. Novel physics in the topological insulators with an anisotropic Dirac cone is anticipated due to the violation of rotational invariance. From magnetoresistance (MR) measurements of Ag2Te nanowires (NWs), we have observed Aharanov-Bohm (AB) oscillation, which is attributed to the quantum interference of electron phase around the perimeter of the NW. Angle and temperature dependences of the AB oscillation indicate the existence of conducting surface states in the NWs, confirming that Ag2Te is a topological insulator. For Ag2Te nanoplates (NPLs), we have observed high carrier mobility exceeding 22 000 cm(2)/(V s) and pronounced Shubnikov-de Haas (SdH) oscillation. From the SdH oscillation, we have obtained Fermi state parameters of the Ag2Te NPLs, which can provide valuable information on Ag2Te. Understanding the basic physics of the topological insulator with an anisotropic Dirac cone could lead to new applications in nanoelectronics and spintronics. English AMER CHEMICAL SOC QUANTUM INTERFERENCE SURFACE-STATES BI2SE3 Single Crystalline beta-Ag2Te Nanowire as a New Topological Insulator Article 10.1021/nl301763r 1 NANO LETTERS, v.12, no.8, pp.4194 - 4199 NANO LETTERS 12 8 4194 4199 scie scopus 000307211000051 2-s2.0-84864708838 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article QUANTUM INTERFERENCE SURFACE-STATES BI2SE3 Anisotropic topological insulator Ag2Te nanowire nanoplate Aharanov-Bohm oscillation Shubnikov-de Haas oscillation