Electronic States of Narrow-Gap Semiconductors Under Multi-Extreme Conditions (eBook)

Kazuto Akiba (Autor)

eBook Download: PDF

2019 | 1st ed. 2019
XXIV, 147 Seiten
Springer Singapore (Verlag)
978-981-13-7107-3 (ISBN)

Infos

This book discusses the latest investigations into the electronic structure of narrow-gap semiconductors in extreme conditions, and describes in detail magnetic field and pressure measurements using two high-quality single crystals: black phosphorus (BP) and lead telluride (PbTe).

The book presents two significant findings for BP and PbTe. The first is the successful demonstration of the pressure-induced transition from semiconductor to semimetal in the electronic structure of BP using magnetoresistance measurements. The second is the quantitative estimation of how well the Dirac fermion description works for electronic properties in PbTe.

The overviews on BP and PbTe from the point of view of material properties help readers quickly understand the typical electronic character of narrow-gap semiconductor materials, which has recently attracted interest in topological features in condensed matter physics. Additionally the introductory review of the principles and methodology allows readers to understand the high magnetic field and pressure experiments.

Kazuto Akiba has been an Assistant Professor at Okayama University since April 2018. His work mainly involves experimental investigation of the physical properties of materials under extreme conditions (high pressures, high magnetic fields and low temperatures). He received his Bachelor of Science from Nagoya University, and his Master and Doctor of Science from the University of Tokyo in 2013, 2015 and 2018, respectively. He received a research fellowship for young scientists from the Japan Society for the Promotion of Science (JSPS) for the period 2016 to 2018, and was awarded the School of Science Research Award (PhD) by the University of Tokyo in 2018.

Inhalt

Supervisor’s Foreword 6
Publications 7
Acknowledgements 8
Contents 9
List of Figures 11
List of Tables 20
1 General Introduction 22
1.1 Exotic States Near the Metal-Insulator Transition 22
1.2 Topological Materials 28
1.3 General Issues and Solutions 31
References 32
2 Experimental Methods 35
2.1 Essentials of the Electrical Transport Measurements 35
2.2 Resistivity Measurements Under Pressure 38
2.3 Generation of Pulsed Magnetic Fields 39
2.4 Cryostat System in High-Field Measurements 44
2.5 Resistivity Measurements in Pulsed Magnetic Fields 46
2.6 Magnetization Measurements in Pulsed Magnetic Fields 48
2.7 Ultrasonic Measurements in Pulsed Magnetic Fields 50
2.8 Samples 56
2.8.1 Black Phosphorus 56
2.8.2 PbTe and Pb1-xSnxTe 57
References 58
3 Black Phosphorus 59
3.1 Basic Properties of Black Phosphorus 59
3.1.1 Crystal Structure 60
3.1.2 Energy Band Structure 61
3.1.3 Physical Properties at Ambient Pressure 62
3.1.4 Physical Properties Under Pressure 66
3.2 Purpose of the Study 69
3.3 Results and Discussion 70
3.3.1 Temperature Dependence of the Resistivity at Various Pressures 70
3.3.2 Quantum Transport Phenomena in Semiconducting Black Phosphorus—Magneto-Phonon Resonance— 72
3.3.3 Quantum Transport Phenomena in Semimetallic Black Phosphorus —Shubnikov-de Haas Oscillation— 75
3.3.4 Analyses of the In-Plane Transport Properties Based on the Two-Carrier Model 83
3.3.5 Exploration of Unconventional Electronic Phases on the Boundary Between Semiconducting and Semimetallic States 88
3.4 Summary 91
References 92
4 Lead Telluride 95
4.1 Basic Properties of PbTe 95
4.1.1 Crystal and Energy Band Structure 96
4.1.2 Physical Properties of PbTe 97
4.1.3 Physical Properties of Pb1-xSnxTe 100
4.1.4 Topological Properties of Pb1-xSnxTe 103
4.1.5 Ferroelectric Transition in Pb1-xSnxTe 105
4.1.6 Physical Properties of Pressurized PbTe 106
4.2 Purpose of the Study 108
4.3 Results and Discussion 108
4.3.1 Pristine PbTe at Ambient Pressure 108
4.3.2 Pb0.7Sn0.3Te 126
4.4 Summary 130
References 131
5 Concluding Remarks 134
5.1 Summary of This Thesis 134
5.2 Future Prospects 136
Reference 137
6 Appendix: Computer Programs Composed for This Study 138
6.1 Numerical Lock-In 138
6.2 Data Acquisition with Tektronix DPO5104B 144
6.3 Numerical Analysis of Ultrasonic Measurements 156
Curriculum Vitae 163

Produkt-Details

• Erscheint lt. Verlag: 4.4.2019
• Reihe/Serie: Springer Theses
• Reihe/Serie: Springer Theses
• Zusatzinfo: XXIV, 147 p. 91 illus., 56 illus. in color.
• Verlagsort: Singapore
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Chemie ► Analytische Chemie
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Atom- / Kern- / Molekularphysik
• Themenwelt: Naturwissenschaften ► Physik / Astronomie ► Festkörperphysik
• Themenwelt: Technik ► Elektrotechnik / Energietechnik
• Themenwelt: Technik ► Maschinenbau
• Schlagworte: Extremely Large Positive Magnetoresistance • Magneto-Phonon Resonance Measurment • Narrow-Gap Semiconductor and Semimetal • Pressured Lead Telluride • Pressure-Induced Semiconductor-Semimetal Transition • Quantum Oscillations in Pulsed Magnetic Field • Semimetallic Black Phosphorus • Shubnikov-de Haas Oscillation • Spin-Split Quantum Oscillations
• ISBN-10: 981-13-7107-5 / 9811371075
• ISBN-13: 978-981-13-7107-3 / 9789811371073