| 摘要 | 第3-4页 |
| abstract | 第4-5页 |
| Chapter 1 Introduction | 第10-29页 |
| 1.1 Overview of topological insulators | 第10-15页 |
| 1.2 Magnetically doped topological insulators | 第15-20页 |
| 1.3 Interplay between topology and magnetism | 第20-23页 |
| 1.4 Quantum oscillation measurements in topological insulators | 第23-28页 |
| 1.5 Organization of this thesis | 第28-29页 |
| Chapter 2 Experimental setup and methods | 第29-45页 |
| 2.1 General considerations in transport measurements | 第29-32页 |
| 2.2 Setup of transport measurements in the superconducting magnet | 第32-37页 |
| 2.2.1 Cryogenics in the superconducting magnet | 第32-35页 |
| 2.2.2 Probe design for transport measurements | 第35-36页 |
| 2.2.3 Data acquisition | 第36-37页 |
| 2.3 Setup of transport measurements in the pulsed magnet | 第37-43页 |
| 2.3.1 Cryogenics in the pulsed magnet | 第37-40页 |
| 2.3.2 Probe design in the pulsed magnet | 第40-42页 |
| 2.3.3 High speed data acquisition | 第42-43页 |
| 2.4 Sample growth and ARPES measurements | 第43-45页 |
| Chapter 3 Electrical control of magnetization | 第45-61页 |
| 3.1 Tuning magnetism near the topological phase transition | 第45-51页 |
| 3.2 Tuning magnetism in the electron-doped regime | 第51-55页 |
| 3.3 Tuning magnetism in the hole-doped regime | 第55-60页 |
| 3.4 Summary | 第60-61页 |
| Chapter 4 Electrically tuned magnetoresistance in Cr_(0.15)(Bi_(0.1)Sb_(0.9))_(1.85)Te_3 | 第61-78页 |
| 4.1 Device fabrication | 第61-62页 |
| 4.2 Long range ferromagnetic order in the sample | 第62-64页 |
| 4.3 Evolution of ferromagnetism with gate electric field | 第64-67页 |
| 4.4 Evolution of magnetoresistance with gate electric field | 第67-68页 |
| 4.5 Correlation between magnetoresistance and ferromagnetism | 第68-72页 |
| 4.6 Revealing the origin of the perplexing magnetoresistance | 第72-76页 |
| 4.7 Summary | 第76-78页 |
| Chapter 5 Zeeman effect of Bi2Te3-x Sx in ultrahigh pulsed magnetic field | 第78-95页 |
| 5.1 Breaking time reversal symmetry by magnetic field | 第78-79页 |
| 5.2 Quantum oscillations as a function of carrier density | 第79-85页 |
| 5.3 Quantum oscillations in the 100 T pulsed magnet | 第85-87页 |
| 5.4 Zeeman shift of the zeroth Landau Level | 第87-90页 |
| 5.5 Angle dependence of quantum oscillations | 第90-94页 |
| 5.6 Summary | 第94-95页 |
| Chapter 6 Ambipolar transport in pulsed magnetic field | 第95-109页 |
| 6.1 Transport properties of Sb2Te3/Bi2Te3 heterostructures | 第95-100页 |
| 6.2 Transport properties of Sb2Te3 thin film in the pulsed magnet | 第100-106页 |
| 6.3 Linear magnetoresistance in Sb2Te3 thin film | 第106-107页 |
| 6.4 Phase diagram of magnetoresistance in Sb2Te3 thin film | 第107-108页 |
| 6.5 Summary | 第108-109页 |
| Chapter 7 Conclusion | 第109-111页 |
| Reference | 第111-125页 |
| Acknowledgement | 第125-128页 |
| 个人简历、在学期间发表的学术论文与研究成果 | 第128-129页 |
