Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb

Junzhang Ma; Changjiang Yi; Baiqing Lv; ZhiJun Wang; Simin Nie; Le Wang; Lingyuan Kong; Yaobo Huang; Pierre Richard; Peng Zhang; Koichiro Yaji; Kenta Kuroda; Shik Shin; Hongming Weng; Bogdan Andrei Bernevig; Youguo Shi; Tian Qian; Hong Ding

doi:10.1126/sciadv.1602415

Research ArticleMATERIALS SCIENCE

Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb

Junzhang Ma¹,*,
Changjiang Yi¹,*,
Baiqing Lv¹,*,
View ORCID ProfileZhiJun Wang²,*,
Simin Nie¹,
Le Wang¹,
Lingyuan Kong¹,
View ORCID ProfileYaobo Huang³,
View ORCID ProfilePierre Richard¹,⁴,⁵,
Peng Zhang⁶,
Koichiro Yaji⁶,
Kenta Kuroda⁶,
View ORCID ProfileShik Shin⁶,
View ORCID ProfileHongming Weng¹,⁴,
Bogdan Andrei Bernevig²,
Youguo Shi¹,†,
Tian Qian¹,⁴,† and
View ORCID ProfileHong Ding¹,⁴,⁵,†

¹Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
²Department of Physics, Princeton University, Princeton, NJ 08544, USA.
³Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.
⁴Collaborative Innovation Center of Quantum Matter, Beijing, China.
⁵School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China.
⁶Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.

↵†Corresponding author. Email: dingh{at}iphy.ac.cn (H.D.); tqian{at}iphy.ac.cn (T.Q.); ygshi{at}iphy.ac.cn (Y.S.)

↵* These authors contributed equally to this work.

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Science Advances 05 May 2017:
Vol. 3, no. 5, e1602415
DOI: 10.1126/sciadv.1602415

Junzhang Ma

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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Changjiang Yi

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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Baiqing Lv

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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ZhiJun Wang

2Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Simin Nie

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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Le Wang

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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Lingyuan Kong

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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Yaobo Huang

3Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China.

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Pierre Richard

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

4Collaborative Innovation Center of Quantum Matter, Beijing, China.

5School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China.

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Peng Zhang

6Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.

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Koichiro Yaji

6Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.

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Kenta Kuroda

6Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.

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Shik Shin

6Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan.

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Hongming Weng

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

4Collaborative Innovation Center of Quantum Matter, Beijing, China.

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Bogdan Andrei Bernevig

2Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Youguo Shi

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

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For correspondence: dingh@iphy.ac.cn tqian@iphy.ac.cn ygshi@iphy.ac.cn

Tian Qian

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

4Collaborative Innovation Center of Quantum Matter, Beijing, China.

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For correspondence: dingh@iphy.ac.cn tqian@iphy.ac.cn ygshi@iphy.ac.cn

Hong Ding

1Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.

4Collaborative Innovation Center of Quantum Matter, Beijing, China.

5School of Physics, University of Chinese Academy of Sciences, Beijing 100190, China.

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ORCID record for Hong Ding
For correspondence: dingh@iphy.ac.cn tqian@iphy.ac.cn ygshi@iphy.ac.cn

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Experimental evidence of hourglass fermion in the candidate nonsymmorphic topological insulator KHgSb

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