کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5788654 1414261 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
ArticleExperimental signature of topological superconductivity and Majorana zero modes on β-Bi2Pd thin films
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
ArticleExperimental signature of topological superconductivity and Majorana zero modes on β-Bi2Pd thin films
چکیده انگلیسی

The search for Majorana fermions in topological superconductors is one of paramount research targets in physics today. Using a cryogenic scanning tunneling microscopy, we here report the signature of topologically nontrivial superconductivity on a single material of β-Bi2Pd films grown by molecular beam epitaxy. The superconducting gap associated with spinless odd-parity pairing opens on the surface and appears much larger than the bulk one due to the Dirac-fermion enhanced parity mixing of surface pair potential. Zero bias conductance peaks, probably from Majorana zero modes supported by such superconducting states, are identified at magnetic vortices. The superconductivity exhibits resistance to nonmagnetic defects, characteristic of time-reversal-invariant topological superconductors. Our study reveals β-Bi2Pd as a prime platform to generate, manipulate and braid Majorana zero modes for quantum computation.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science Bulletin - Volume 62, Issue 12, 30 June 2017, Pages 852-856
نویسندگان
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