Scanning Tunneling Microscopy as a Single Majorana Detector of Kitaev's Chiral Spin Liquid

被引：33
作者：
Udagawa, Masafumi [1 ,2 ]
Takayoshi, Shintaro [2 ,3 ]
Oka, Takashi [2 ,4 ,5 ]
机构：
[1] Gakushuin Univ, Dept Phys, Toshima Ku, Tokyo 1718588, Japan
[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[3] Konan Univ, Dept Phys, Kobe, Hyogo 6588501, Japan
[4] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[5] Univ Tokyo, Transscale Quantum Sci Inst, Bunkyo Ku, Tokyo 1130033, Japan
来源：
PHYSICAL REVIEW LETTERS | 2021年 / 126卷 / 12期
关键词：
QUANTUM; STATES; FERMIONS; ANYONS;
D O I：
10.1103/PhysRevLett.126.127201
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a local detection scheme for the Majorana zero mode (MZM) carried by a vison in Kitaev's chiral spin liquid (CSL) using scanning tunneling microscopy (STM). The STM introduces a single Majorana into the system through hole-charge injection and the Majorana interacts with the MZM to form a stable composite object. We derive the exact analytical expression of single-hole Green's function in the Mott insulating limit of Kitaev's model, and show that the differential conductance has split peaks, as a consequence of resonant tunneling through the vison-hole composite. The peak splitting turns out comparable to the Majorana gap in CSL, well within the reach of experimental observation.
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页数：6
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共 65 条
[1]   Exponential protection of zero modes in Majorana islands [J].
Albrecht, S. M. ;
Higginbotham, A. P. ;
Madsen, M. ;
Kuemmeth, F. ;
Jespersen, T. S. ;
Nygard, J. ;
Krogstrup, P. ;
Marcus, C. M. .
NATURE, 2016, 531 (7593) :206-+
[2]   Spin liquids in frustrated magnets [J].
Balents, Leon .
NATURE, 2010, 464 (7286) :199-208
[3]   Excitations in the field-induced quantum spin liquid state of α-RuCl3 [J].
Banerjee, Arnab ;
Lampen-Kelley, Paula ;
Knolle, Johannes ;
Balz, Christian ;
Aczel, Adam Anthony ;
Winn, Barry ;
Liu, Yaohua ;
Pajerowski, Daniel ;
Yan, Jiaqiang ;
Bridges, Craig A. ;
Savici, Andrei T. ;
Chakoumakos, Bryan C. ;
Lumsden, Mark D. ;
Tennant, David Alan ;
Moessner, Roderich ;
Mandrus, David G. ;
Nagler, Stephen E. .
NPJ QUANTUM MATERIALS, 2018, 3
[4]   TUNNELLING FROM A MANY-PARTICLE POINT OF VIEW [J].
BARDEEN, J .
PHYSICAL REVIEW LETTERS, 1961, 6 (02) :57-&
[5]   Majorana Fermions in Vortex Lattices [J].
Biswas, Rudro R. .
PHYSICAL REVIEW LETTERS, 2013, 111 (13)
[6]   Detecting non-Abelian statistics in the ν=5/2 fractional quantum Hall state -: art. no. 016803 [J].
Bonderson, P ;
Kitaev, A ;
Shtengel, K .
PHYSICAL REVIEW LETTERS, 2006, 96 (01)
[7]   Tunneling spectroscopy as a probe of fractionalization in two-dimensional magnetic heterostructures [J].
Carrega, Matteo ;
Vera-Marun, Ivan J. ;
Principi, Alessandro .
PHYSICAL REVIEW B, 2020, 102 (08)
[8]  
Chalker J., ARXIV200616987
[9]   Discrete energy levels of Caroli-de Gennes-Matricon states in quantum limit in FeTe0.55Se0.45 [J].
Chen, Mingyang ;
Chen, Xiaoyu ;
Yang, Huan ;
Du, Zengyi ;
Zhu, Xiyu ;
Wang, Enyu ;
Wen, Hai-Hu .
NATURE COMMUNICATIONS, 2018, 9
[10]   Tunneling of anyonic Majorana excitations in topological superconductors [J].
Cheng, Meng ;
Lutchyn, Roman M. ;
Galitski, Victor ;
Das Sarma, S. .
PHYSICAL REVIEW B, 2010, 82 (09)
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