6 papers
Observation of magnetically switchable quantum geometric photocurrents
Qi Tian, Zhuoliang Ni, Matthew Cothrine +6
In non-centrosymmetric materials, light can be rectified into two types of DC photocurrents, known as injection and shift currents, through the bulk photovoltaic effect. Recent the…
Multi-Modal Spectroscopy Theory for Ultrafast Control of Rabi Oscillations
J. W. Yu, H. B Wang, X. Q. Zhou +10
We propose a three-cavity scheme to realize full control of the emitter-cavity coupling strength in cavity quantum electrodynamics (cQED). The involvement of coupled oscillators gi…
Broad-band THz emission by Spin-to-Charge Conversion in Topological Material -- Ferromagnet Heterostructures
Xingyue Han, Xiong Yao, Tilak Ram Thapaliya +10
Terahertz spintronic devices combine ultrafast operation with low power consumption, making them strong candidates for next-generation memory technologies. In this study, we use ti…
Imprinting spin patterns by local strain control in a van der Waals antiferromagnet
Zhuoliang Ni, Huiqin Zhang, Qi Tian +6
Van der Waals magnets provide opportunities for exploring low-dimensional magnetism and spintronic phenomena. The Mermin-Wagner theorem states that long-range correlations in reduc…
Observation of terahertz second harmonic generation from Dirac surface states in the topological insulator BiSe
Jonathan Stensberg, Xingyue Han, Zhuoliang Ni +6
We report the observation of second harmonic generation with high conversion efficiency in the terahertz regime from thin films of the topological insulator BiSe…
Magnetic field control of continuous Néel vector rotation and Néel temperature in a van der Waals antiferromagnet
Zhuoliang Ni, Urban Seifert, Amanda V. Haglund +4
In a collinear antiferromagnet, spins tend to cant towards the direction of an applied magnetic field, thereby decreasing the energy of the system. The canting angle becomes neglig…