Surface Majorana cone of the topological superfluid ³He B phase

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• 作者：Ryuji Nomura ; Satoshi Murakawa ; Masahiro Wasai ; Kouki Akiyama ; Takeru Nakao ; Yuichi Okuda
• 关键词：Topological superfluid ; Superfluid 3He ; Majorana fermion ; Andreev bound state ; Majorana cone
• 刊名：Physica E
• 出版年：January, 2014
• 年：2014
• 卷：55
• 期：Complete
• 页码：42-47
• 全文大小：839 K

文摘

Topological superfluids and superconductors have been theoretically proposed, and it is now necessary to experimentally confirm their existence. Superfluid ³He should be the ideal test subject for topological theories because its bulk state is established to be that of a spin-triplet p-wave superfluid. Surface Andreev bound states of superfluid ³He were investigated by transverse acoustic impedance measurements and their linear dispersion was confirmed on a highly specular wall. The superfluid ³He B phase was found to be a topological superfluid showing bulk-edge correspondence and a surface Majorana cone was confirmed on the surface. Possible manifestations of the Majorana nature of the surface states are discussed.