Experimental discovery of a topological Weyl semimetal state in TaP

Su-Yang Xu; Ilya Belopolski; Daniel S. Sanchez; Chenglong Zhang; Guoqing Chang; Cheng Guo; Guang Bian; Zhujun Yuan; Hong Lu; Tay-Rong Chang; Pavel P. Shibayev; Mykhailo L. Prokopovych; Nasser Alidoust; Hao Zheng; Chi-Cheng Lee; Shin-Ming Huang; Raman Sankar; Fangcheng Chou; Chuang-Han Hsu; Horng-Tay Jeng; Arun Bansil; Titus Neupert; Vladimir N. Strocov; Hsin Lin; Shuang Jia; M. Zahid Hasan

doi:10.1126/sciadv.1501092

Research ArticlePHYSICS

Experimental discovery of a topological Weyl semimetal state in TaP

Su-Yang Xu¹,*,†,
Ilya Belopolski¹,*,
Daniel S. Sanchez¹,*,
Chenglong Zhang²,
View ORCID ProfileGuoqing Chang³,⁴,
Cheng Guo²,
Guang Bian¹,
Zhujun Yuan²,
Hong Lu²,
View ORCID ProfileTay-Rong Chang⁵,
View ORCID ProfilePavel P. Shibayev¹,
Mykhailo L. Prokopovych⁶,
Nasser Alidoust¹,
Hao Zheng¹,
Chi-Cheng Lee³,⁴,
View ORCID ProfileShin-Ming Huang³,⁴,
Raman Sankar⁷,⁸,
Fangcheng Chou⁷,
View ORCID ProfileChuang-Han Hsu³,⁴,
Horng-Tay Jeng⁵,⁸,
Arun Bansil⁹,
Titus Neupert¹⁰,
Vladimir N. Strocov⁶,
Hsin Lin³,⁴,
Shuang Jia²,¹¹ and
M. Zahid Hasan¹,¹²,†

¹Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.
²International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.
³Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.
⁴Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.
⁵Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan.
⁶Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.
⁷Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan.
⁸Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan.
⁹Department of Physics, Northeastern University, Boston, MA 02115, USA.
¹⁰Princeton Center for Theoretical Science, Princeton University, Princeton, NJ 08544, USA.
¹¹Collaborative Innovation Center of Quantum Matter, Beijing 100871, China.
¹²Princeton Center for Complex Materials, Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA.

↵†Corresponding author. E-mail: suyangxu{at}princeton.edu (S.-Y.X.); mzhasan{at}princeton.edu (M.Z.H.)

↵* These authors contributed equally to this work.

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Science Advances 13 Nov 2015:
Vol. 1, no. 10, e1501092
DOI: 10.1126/sciadv.1501092

Su-Yang Xu

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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For correspondence: suyangxu@princeton.edu mzhasan@princeton.edu

Ilya Belopolski

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Daniel S. Sanchez

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Chenglong Zhang

2International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

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Guoqing Chang

3Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.

4Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.

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ORCID record for Guoqing Chang

Cheng Guo

2International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

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Guang Bian

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Zhujun Yuan

2International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

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Hong Lu

2International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

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Tay-Rong Chang

5Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan.

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Pavel P. Shibayev

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Mykhailo L. Prokopovych

6Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.

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Nasser Alidoust

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Hao Zheng

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

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Chi-Cheng Lee

3Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.

4Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.

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Shin-Ming Huang

3Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.

4Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.

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Raman Sankar

7Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan.

8Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan.

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Fangcheng Chou

7Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan.

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Chuang-Han Hsu

3Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.

4Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.

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Horng-Tay Jeng

5Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan.

8Institute of Physics, Academia Sinica, Nankang, Taipei 11529, Taiwan.

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Arun Bansil

9Department of Physics, Northeastern University, Boston, MA 02115, USA.

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Titus Neupert

10Princeton Center for Theoretical Science, Princeton University, Princeton, NJ 08544, USA.

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Vladimir N. Strocov

6Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland.

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Hsin Lin

3Centre for Advanced 2D Materials and Graphene Research Centre, National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore.

4Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542, Singapore.

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Shuang Jia

2International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.

11Collaborative Innovation Center of Quantum Matter, Beijing 100871, China.

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M. Zahid Hasan

1Laboratory for Topological Quantum Matter and Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ 08544, USA.

12Princeton Center for Complex Materials, Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ 08544, USA.

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For correspondence: suyangxu@princeton.edu mzhasan@princeton.edu

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