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Paper Abstract and Keywords
Presentation 2019-10-17 17:00
Measurement of electronic density of state of SmB6 using point contact spectroscopy
Harada Takurou, Shiga Masanobu, Okimura Kengo, Inagaki Yuji (Kyushu Univ), Iga Fumitoshi (Ibaraki Univ), Kawae Tastuya (Kyushu Univ) MRIS2019-25
Abstract (in Japanese) (See Japanese page) 
(in English) SmB6 is known as Kondo insulator. The electrical resistivity of SmB6 is saturated at low temperature even though energy gap is completely opening. Recently, the origin of that behavior is discussed from the view point of a topological insulator, which has a metallic surface state. To reveal the difference between the bulk and the surface states, we investigated the electronic density of state (DOS) of SmB6 using point contact spectroscopy (PCS). As a result, PCS spectra was changed with decreasing the contact size. The size dependence of the PCS spectra can be explained by the change of the contribution between the metallic surface state and insulating bulk state.
Keyword (in Japanese) (See Japanese page) 
(in English) Kondo insulator / SmB6 / topological insulator / / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 232, MRIS2019-25, pp. 61-64, Oct. 2019.
Paper # MRIS2019-25 
Date of Issue 2019-10-10 (MRIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF MRIS2019-25

Conference Information
Conference Date 2019-10-17 - 2019-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu University (Nishijin Plaza) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Recording Head, Spintronics, etc. 
Paper Information
Registration To MRIS 
Conference Code 2019-10-MRIS-MMS-MAG 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Measurement of electronic density of state of SmB6 using point contact spectroscopy 
Sub Title (in English)  
Keyword(1) Kondo insulator  
Keyword(2) SmB6  
Keyword(3) topological insulator  
1st Author's Name Harada Takurou  
1st Author's Affiliation Kyushu University (Kyushu Univ)
2nd Author's Name Shiga Masanobu  
2nd Author's Affiliation Kyushu University (Kyushu Univ)
3rd Author's Name Okimura Kengo  
3rd Author's Affiliation Kyushu University (Kyushu Univ)
4th Author's Name Inagaki Yuji  
4th Author's Affiliation Kyushu University (Kyushu Univ)
5th Author's Name Iga Fumitoshi  
5th Author's Affiliation Ibaraki University (Ibaraki Univ)
6th Author's Name Kawae Tastuya  
6th Author's Affiliation Kyushu University (Kyushu Univ)
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Date Time 2019-10-17 17:00:00 
Presentation Time 15 
Registration for MRIS 
Paper # IEICE-MRIS2019-25 
Volume (vol) IEICE-119 
Number (no) no.232 
Page pp.61-64 
#Pages IEICE-4 
Date of Issue IEICE-MRIS-2019-10-10 

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