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24 papers
Unconventional Superconducting Phase Diagram of Monolayer WTe2
Tiancheng Song, Yanyu Jia, Guo Yu +13
The existence of a quantum critical point (QCP) and fluctuations around it are believed to be important for understanding the phase diagram in unconventional superconductors such a…
Anomalous Superconductivity in Twisted MoTe2 Nanojunctions
Yanyu Jia, Tiancheng Song, Zhaoyi Joy Zheng +14
Introducing superconductivity in topological materials can lead to innovative electronic phases and device functionalities. Here, we present a new strategy for quantum engineering…
Large Thermopower with Sign-Alternating Quantum Oscillations in Insulating Monolayer WTe2
Yue Tang, Tiancheng Song, Haosen Guan +13
The detection of Landau-level-like energy structures near the chemical potential of an insulator is essential to the search for a class of correlated electronic matter hosting char…
Superconductivity from On-Chip Metallization on 2D Topological Chalcogenides
Yanyu Jia, Guo Yu, Tiancheng Song +11
Two-dimensional (2D) transition metal dichalcogenides (TMDs) is a versatile class of quantum materials of interest to various fields including, e.g., nanoelectronics, optical devic…
A Platform for Far-Infrared Spectroscopy of Quantum Materials at Millikelvin Temperatures
Michael Onyszczak, Ayelet J. Uzan, Yue Tang +8
Optical spectroscopy of quantum materials at ultralow temperatures is rarely explored, yet it may provide critical characterizations of quantum phases not possible using other appr…
Evidence for Two Dimensional Anisotropic Luttinger Liquids at Millikelvin Temperatures
Guo Yu, Pengjie Wang, Ayelet J. Uzan +11
While Landau's Fermi liquid theory provides the standard description for two- and three-dimensional (2D/3D) conductors, the physics of interacting one-dimensional (1D) conductors i…
Surface-Confined Two-Dimensional Crystal Growth on a Monolayer
Yanyu Jia, Fang Yuan, Guangming Cheng +12
Conventional vapor deposition or epitaxial growth of two-dimensional (2D) materials and heterostructures is conducted in a large chamber in which masses transport from the source t…
Unconventional Superconducting Quantum Criticality in Monolayer WTe2
Tiancheng Song, Yanyu Jia, Guo Yu +12
The superconductor to insulator or metal transition in two dimensions (2D) provides a valuable platform for studying continuous quantum phase transitions (QPTs) and critical phenom…
Gate-tunable proximity effects in graphene on layered magnetic insulators
Chun-Chih Tseng, Tiancheng Song, Qianni Jiang +11
The extreme versatility of two-dimensional van der Waals (vdW) materials derives from their ability to exhibit new electronic properties when assembled in proximity with dissimilar…
Electric control of a canted-antiferromagnetic Chern insulator
Jiaqi Cai, Dmitry Ovchinnikov, Zaiyao Fei +11
The interplay between band topology and magnetism can give rise to exotic states of matter. For example, magnetically doped topological insulators can realize a Chern insulator tha…
Even-Odd Layer-Dependent Anomalous Hall Effect in Topological Magnet MnBi2Te4 Thin Films
Yi-Fan Zhao, Ling-Jie Zhou, Fei Wang +10
A central theme in condensed matter physics is to create and understand the exotic states of matter by incorporating magnetism into topological materials. One prime example is the…
Spin Photovoltaic Effect in Magnetic van der Waals Heterostructures
Tiancheng Song, Eric Anderson, Matisse Wei-Yuan Tu +9
The development of van der Waals (vdW) crystals and their heterostructures has created a fascinating platform for exploring optoelectronic properties in the two-dimensional (2D) li…
Quantum Oscillations in the Field-induced Ferromagnetic State of MnBiSbTe
Qianni Jiang, Chong Wang, Paul Malinowski +10
The intrinsic antiferromagnetic topological insulator MnBiTe undergoes a metamagnetic transition in a c-axis magnetic field. It has been predicted that ferromagnetic Mn…
Intertwined Topological and Magnetic Orders in Atomically Thin Chern Insulator MnBi2Te4
Dmitry Ovchinnikov, Xiong Huang, Zhong Lin +15
The interplay between band topology and magnetic order plays a key role in quantum states of matter. MnBi2Te4, a van der Waals magnet, has recently emerged as an exciting platform…
Magnetic domains and domain wall pinning in two-dimensional ferromagnets revealed by nanoscale imaging
Qi-Chao Sun, Tiancheng Song, Eric Anderson +9
Magnetic-domain structure and dynamics play an important role in understanding and controlling the magnetic properties of two-dimensional magnets, which are of interest to both fun…
Direct observation of 2D magnons in atomically thin CrI
John Cenker, Bevin Huang, Nishchay Suri +8
Exfoliated chromium triiodide (CrI) is a layered van der Waals (vdW) magnetic insulator that consists of ferromagnetic layers coupled through antiferromagnetic interlayer excha…
Magnetic proximity and nonreciprocal current switching in a monolayer WTe2 helical edge
Wenjin Zhao, Zaiyao Fei, Tiancheng Song +8
The integration of diverse electronic phenomena, such as magnetism and nontrivial topology, into a single system is normally studied either by seeking materials that contain both i…
Tuning Inelastic Light Scattering via Symmetry Control in 2D Magnet CrI
Bevin Huang, John Cenker, Xiaoou Zhang +7
The coupling between spin and charge degrees of freedom in a crystal imparts strong optical signatures on scattered electromagnetic waves. This has led to magneto-optical effects w…
Switching 2D Magnetic States via Pressure Tuning of Layer Stacking
Tiancheng Song, Zaiyao Fei, Matthew Yankowitz +15
The physical properties of two-dimensional van der Waals (2D vdW) crystals depend sensitively on the interlayer coupling, which is intimately connected to the stacking arrangement…
Giant and nonreciprocal second harmonic generation from layered antiferromagnetism in bilayer CrI3
Zeyuan Sun, Yangfan Yi, Tiancheng Song +14
Layered antiferromagnetism is the spatial arrangement of ferromagnetic layers with antiferromagnetic interlayer coupling. Recently, the van der Waals magnet, chromium triiodide (Cr…
Atomically Thin CrCl3: An in-Plane Layered Antiferromagnetic Insulator
Xinghan Cai, Tiancheng Song, Nathan P. Wilson +10
The recent discovery of magnetism in atomically thin layers of van der Waals (vdW) crystals has created new opportunities for exploring magnetic phenomena in the two-dimensional (2…
Voltage Control of a van der Waals Spin-Filter Magnetic Tunnel Junction
Tiancheng Song, Matisse Wei-Yuan Tu, Caitlin Carnahan +8
Atomically thin chromium triiodide (CrI3) has recently been identified as a layered antiferromagnetic insulator, in which adjacent ferromagnetic monolayers are antiferromagneticall…
Two-Dimensional Itinerant Ising Ferromagnetism in Atomically thin Fe3GeTe2
Zaiyao Fei, Bevin Huang, Paul Malinowski +11
Recent discoveries of intrinsic two-dimensional (2D) ferromagnetism in insulating/semiconducting van der Waals (vdW) crystals open up new possibilities for studying fundamental 2D…
Giant Tunneling Magnetoresistance in Spin-Filter van der Waals Heterostructures
Tiancheng Song, Xinghan Cai, Matisse Wei-Yuan Tu +12
Magnetic multilayer devices that exploit magnetoresistance are the backbone of magnetic sensing and data storage technologies. Here we report novel multiple-spin-filter magnetic tu…