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Experimental realization of novel quantum materials with MBE/PLD+STM+ARPES

English title Experimental realization of novel quantum materials with MBE/PLD+STM+ARPES
Applicant Shi Ming
Number 170075
Funding scheme Bilateral programmes
Research institution Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.11.2017 - 31.10.2021
Approved amount 346'140.00
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Keywords (9)

Topological materials; pulsed-laser deposition (PLD); Weyl semi-metals; quantum anomalous Hall effect materials; Angle-Resolved Photoemission (ARPES); Thin film; Scanning tunneling microscopy (STM); Molecular beam epitaxy (MBE); high-temperature superconductivity

Lay Summary (German)

Lead
Im vorliegenden Projekt möchten wir durch die Zusammenarbeit vom Paul Scherrer Institut und der Tsinghua University neue topologische Quanten-Materialien und niedrigdimensionale Supraleiter realisieren und untersuchen. Diese Systeme sind von hohem Interesse für die Grundlagenforschung und haben grosses Potential für zukünftige Anwendungen.
Lay summary

Das Ziel des vorliegenden Projektes ist das Aufbauen einer engen Zusammenarbeit zwischen dem Paul Scherrer Institut (PSI), Schweiz und der Tsinghua University, China zur Untersuchung von neuen Quanten-Materialien mit Hilfe von Labor- und Grossforschungsanlagen, wie Synchrotron-Lichtquellen. Mit der Partnerschaft der zwei Institutionen wird auch der Grundstein gelegt zur Zusammenarbeit in gegenwärtigen wissenschaftlichen Projekten und zum Aufbau zukünftiger Langzeit-Kollaborationen.

Anhand von drei konkreten wissenschaftlichen Projekten möchten wir hoch aktuelle Themengebiete der Materialwisschenschaften und Festkörperphysik grundlegend untersuchen sowie neue Themengebiete erschliessen.  

  1. Magnetische Weyl Halbmetalle und verwandte Materialien mit einem «Quantum Anomlous Hall»-Effekt, sowie

  2. Neue 2D Hochtemperatursupraleiter und

  3. Neue topologische Supraleiter.

Die kurz- sowie langfristigen Erkentnisse gewonnen durch die Realisation und Untersuchung dieser Quanten-Materialien sind von hohem Interesse für die Grundlagenforschung und haben ein grosses Potential für eine zukünftige Verwendung in funktionellen Geräten oder in der Quanten-Datenverarbeitung. Das internationalle Forschungsgebiet der neuen Quanten-Materialen ist höchst dynamisch. Die Konzeption der vorgeschlagenen Aktivitäten erlaubt deshalb Anpassungen entsprechend neuer Erkenntnisse und Entwicklungen. Weiter können neue vielversprechende Materialien passend zum Themengebiet der vorgeschlagenen Aktivitäten in die Studie aufgenommen warden.
Direct link to Lay Summary Last update: 04.10.2017

Responsible applicant and co-applicants

Employees

Project partner

Publications

Publication
Hybridization Effects Revealed by Angle-Resolved Photoemission Spectroscopy in Heavy-Fermion Ce 2 IrIn 8
Liu Haijiang, Xu Yuanji, Zhong Yigui, Guan Jianyu, Kong Lingyuan, Ma Junzhang, Huang Yaobo, Chen Qiuyun, Chen Genfu, Shi Ming, Yang Yi-feng, Ding Hong (2019), Hybridization Effects Revealed by Angle-Resolved Photoemission Spectroscopy in Heavy-Fermion Ce 2 IrIn 8, in Chinese Physics Letters, 36(9), 097101-097101.
Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd 2 As 2
Ma J.-Z., Nie S. M., Yi C. J., Jandke J., Shang T., Yao M. Y., Naamneh M., Yan L. Q., Sun Y., Chikina A., Strocov V. N., Medarde M., Song M., Xiong Y.-M., Xu G., Wulfhekel W., Mesot J., Reticcioli M., Franchini C., Mudry C., Müller M., Shi Y. G., Qian T., Ding H., Shi M. (2019), Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd 2 As 2, in Science Advances, 5(7), eaaw4718-eaaw4718.
Observation of Weyl Nodes in Robust Type-II Weyl Semimetal WP2
Yao M.-Y., Xu N., Wu Q. S., Autès G., Kumar N., Strocov V. N., Plumb N. C., Radovic M., Yazyev O. V., Felser C., Mesot J., Shi M. (2019), Observation of Weyl Nodes in Robust Type-II Weyl Semimetal WP2, in Physical Review Letters, 122(17), 176402-176402.

Collaboration

Group / person Country
Types of collaboration
V. N. Strocov & T. Schmitt/SLS/Paul Scherrer Institut Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Oleg Yazyev/EPF Lausanne Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Z. Fang and X. Dai/Institute of Physics, CAS China (Asia)
- in-depth/constructive exchanges on approaches, methods or results
N. C. Plumb/SLS/Paul Scherrer Institut Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
J. H. Dil/EPF Lausanne & Paul Scherrer Institut Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Carlos A. F. Vaz/SLS/Paul Scherrer Institut Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Dr. E. Pomjakushina and Prof. K. Conder/Paul Scherrer Institut Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
12th International Conference on Materials and Mechanisms pf superconductivity and High Temperature Superconductors Talk given at a conference The Electronic Structure of 112 Fe-pnictide superconductors probed by ARPES 19.08.2018 Beijing, China Shi Ming;
Erice Workshop 2018 "Majorana Fermions and Topological Materials Science Talk given at a conference Emergence of Massless Weyl and Dirac Fermions in Semi-metals with Broken PT Symmetry 21.07.2018 Erice, Sicily, Italy Shi Ming;
Advances in Dirac and Weyl Materials Workshop Talk given at a conference Distinct Evolutions of Weyl fermions and Fermi Arcs in Weyl Semimetals 13.12.2017 Jacksonville Beach, Florida, United States of America Shi Ming;


Associated projects

Number Title Start Funding scheme
182695 The United Control over Charge Density and Spin State of Low Dimensional Electron System at Titanates 01.07.2019 Project funding (Div. I-III)
183300 High-resolution soft-X-ray ARPES facility at Swiss Light Source 01.03.2019 R'EQUIP

Abstract

The proposed project aims to establish tight collaborations between the Paul Scherrer Institute (PSI) of Switzerland and Tsinghua University, China, in research on novel quantum materials using advanced laboratory-based techniques and large facilities, such as synchrotron light sources. We will also create a platform for institutional partnership for the on-going scientific activities, as well as for long-term collaborations. We shall exchange postdoctoral fellows and/or doctoral students in joint supervision for research and training in the fields of material sciences and condensed matter physics. With three concrete examples of scientific cases, we shall search for and comprehensively study the forefront themes in materials science and condensed matter physics:1)magnetic Weyl semi-metals and their related quantum anomalous Hall effect materials,2)new 2D high-temperature superconductors, and3)novel topological superconductors.The ultimate and intermediate results in realizing these quantum materials will be of high impact in fundamental science and have great potential for applications, such as novel functional devices and quantum information. Research on novel quantum materials is fast developing worldwide, so that the proposed activities could be adjusted depending on new developments in the field, and the discovery of new materials which are relevant to the line of research in this proposal.Tsinghua University is one of the top universities in China and its Physics Department is one of leading centers in the world in the field of topological quantum materials research and low-dimensional high-temperature superconductors, including experimental discoveries of quantum anomalous Hall effect and single-layer high-temperature superconductivity. The strength of Tsinghua University in materials synthesis and developing advanced laboratory-based equipment will bring benefits to PSI in its research programs on material sciences, and in particular to build up the ensemble of molecular beam epitaxy (MBE) and synchrotron-based angle-resolved photoemission spectroscopy (ARPES) in the near future,PSI, embedded in the ETH Domain alongside ETH and EPFL, with large facilities such as the Swiss Light Source (SLS), the Swiss Free Electron Laser (SwissFEL) and the Swiss Spallation Neutron Source (SINQ), provides great opportunities to domestic universities and the international scientific community for successful achievements in materials science and other disciplines. The high scientific throughput is widely recognized by the international scientific community. Leading expert scientists familiar with the large facilities have performed numerous breakthrough works in their in-house research, including in the fields of material sciences and condensed matter physics. Experiments exploiting large facilities at PSI would be highly beneficial to Tsinghua University in enhancing its materials research programs.
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