First-principles discovery of novel quantum physics and materials: From theory to experiment

  title={First-principles discovery of novel quantum physics and materials: From theory to experiment},
  author={Yang Li and Yongjun Xu},
  journal={arXiv: Computational Physics},
1 Citations
Antiferromagnetic VdW Phase at the Interface of Sputtered Topological Insulator/Ferromagnet-Bi2Te3/Ni80Fe20 Heterostructures
Magnetic ordering in topological insulators (TI) is crucial for breaking time-reversal symmetry (TRS) and thereby opening a gap in the topological surface states (TSSs) [1-6], which is the key for


Type-II Ising superconductivity and anomalous metallic state in macro-size ambient-stable ultrathin crystalline films.
A systematic transport study on the ultrathin crystalline PdTe2 films grown by molecular beam epitaxy (MBE) finds a new type of Ising superconductivity in 2D centrosymmetric materials is revealed by the detection of large in-plane critical field more than 7 times Pauli limit.
Magnetic topological insulators
The importance of global band topology is unequivocally recognized in condensed matter physics, and new states of matter, such as topological insulators, have been discovered. Owing to their bulk
Quantum anomalous Hall effect and related topological electronic states
Over a long period of exploration, the successful observation of quantized version of anomalous Hall effect (AHE) in thin film of magnetically doped topological insulator (TI) completed a quantum
Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
The observation of the quantum anomalous Hall (QAH) effect in thin films of chromium-doped (Bi,Sb)2Te3, a magnetic topological insulator shows a plateau in the Hall resistance as a function of the gating voltage without any applied magnetic fields, signifying the achievement of the QAH state.
High-Temperature Quantum Anomalous Hall Insulators in Lithium-Decorated Iron-Based Superconductor Materials.
By first-principles calculations, this work finds a family of stable two-dimensional structures generated by lithium decoration of layered iron-based superconductor materials Fe X(X=S,Se,Te), and predicts room-temperature ferromagnetic semiconductors together with large-gap high-Chern-number QAH insulators in the 2D materials.
Experimental Realization of an Intrinsic Magnetic Topological Insulator*
Intrinsic magnetic topological insulator (TI) is a stoichiometric magnetic compound possessing both inherent magnetic order and topological electronic states. Such a material can provide a shortcut
High-Chern-number and high-temperature quantum Hall effect without Landau levels
The experimental discovery of high-Chern-number QHE (C = 2) without Landau levels and C = 1 Chern insulator state displaying a nearly quantized Hall resistance plateau above the Néel temperature in MnBi2Te4 devices is reported.
Topological magneto-optical effects and their quantization in noncoplanar antiferromagnets
It is demonstrated that topological magneto-optical effects can arise in noncoplanar antiferromagnets due to the finite scalar spin chirality, without any reference to exchange splitting or spin-orbit coupling.
Topological quantum computation based on chiral Majorana fermions
It is shown that the propagation of chiral Majorana fermions leads to the same unitary transformation as that in the braiding of Majorana zero modes and a platform to perform quantum computation with chiral majors is proposed.
Intrinsic magnetic topological insulators in van der Waals layered MnBi2Te4-family materials
This work predicts a series of van der Waals layered MnBi2Te4-related materials that show intralayer ferromagnetic and interlayer antiferromagnetic exchange interactions that could profoundly change future research and technology of topological quantum physics.