Article
Chemistry, Physical
Camille Lagoin, Stephan Suffit, Kirk Baldwin, Loren Pfeiffer, Francois Dubin
Summary: In an artificial square lattice, we manipulate a Bose-Fermi mixture by confining neutral and charged dipolar excitons. At specific lattice filling, strong inter- and intraspecies interactions lead to insulating phases and the realization of dual Bose-Fermi density waves.
Article
Multidisciplinary Sciences
Xi Wang, Chengxin Xiao, Heonjoon Park, Jiayi Zhu, Chong Wang, Takashi Taniguchi, Kenji Watanabe, Jiaqiang Yan, Di Xiao, Daniel R. Gamelin, Wang Yao, Xiaodong Xu
Summary: Many-body interactions between carriers play a crucial role in correlated physics. This study demonstrates the ability to highly tune spin-spin interactions between moire-trapped carriers using optical excitation, resulting in ferromagnetic order in WS2/WSe2 moire superlattices. The observed phenomenon adds a dynamic tuning knob to the rich many-body Hamiltonian of moire quantum matter.
Article
Materials Science, Multidisciplinary
Rebecca Kraus, Titas Chanda, Jakub Zakrzewski, Giovanna Morigi
Summary: In this article, a theoretical analysis of the phase diagram of a quantum gas of bosons interacting via repulsive dipolar interactions is conducted. Numerical techniques are used to evaluate the phase diagram for unit density, revealing a significant impact of correlated tunneling on the parameter range of the topological insulator phase.
Article
Physics, Multidisciplinary
Jiawei Zang, Jie Wang, Jennifer Cano, Antoine Georges, Andrew J. Millis
Summary: In this study, a comprehensive analysis of the triangular lattice moire??Hubbard model was conducted to investigate the physics of moire?? bilayer transition metal dichalcogenides. The results reveal the correlation between the band structure and important properties such as resistivity, magnetic order, and metal-insulator transition. The findings provide insights into the behavior of correlated states in twisted homobilayer WSe2 and heterobilayer MoTe2/WSe2 experiments.
Article
Materials Science, Multidisciplinary
Han Xu, Congjun Wu, Yu Wang
Summary: In this study, we employed the sign-problem-free projector determinant quantum Monte Carlo method to investigate the properties of a microscopic model of SU(N) fermions on a square lattice. We observed the singlet px and triplet d(x)(2)- y(2) density wave states in the N = 4 model with different interaction strengths. The transition from triplet d(x)(2)- y(2) to singlet px density wave state was observed, and a mixed-ordered area where the two orders coexist was found. By performing analytical continuation, we obtained the single-particle spectrum, which showed anisotropic characteristics for the different density wave states.
Article
Physics, Condensed Matter
Arun Kumar Maurya, Md Tahir Hossain Sarder, Amal Medhi
Summary: By using the variational slave-spin mean field method, we studied the ground state properties of the Hubbard model at different electron fillings. Our results show that the onsite repulsion U in the half-filling case affects the ground state's magnetic or Mott insulating properties, while in the non-half-filling case, the model demonstrates a complex relationship between the ferromagnetic state and electronic correlations.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Physics, Multidisciplinary
Karen Lozano-Mendez, Alejandro H. Casares, Santiago F. Caballero-Benitez
Summary: Quantum matter at ultralow temperatures provides a platform for studying desired properties in strongly correlated systems. Using high-Q cavities and optical lattices, we investigate the effects of cavity-mediated long-range magnetic interactions and the presence of ultra-cold matter. We find that global interactions modify the magnetic character of the system and introduce competition. This leads to the emergence of antiferromagnetic correlated bosonic matter beyond what is typically observed in nature.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Piotr Chudzinski
Summary: The study develops a scheme to calculate the parameters of Tomonaga-Luttinger liquid and holon velocity in quasi-1D materials, focusing on two-leg ladders coupled through Coulomb interactions. By deriving an analytic formula for electron-electron interaction potential and introducing many-body screening, the study is able to determine the TLL's parameters and velocities. Experimental validation using angle-resolved photoemission spectroscopy data in NbSe3 is provided, with the applicability of the scheme to other quasi-1D systems with two-leg ladders as basic units demonstrated.
Article
Nanoscience & Nanotechnology
Aidan J. Campbell, Mauro Brotons-Gisbert, Hyeonjun Baek, Valerio Vitale, Takashi Taniguchi, Kenji Watanabe, Johannes Lischner, Brian D. Gerardot
Summary: This study investigates the behavior of exciton-polarons in strongly correlated electronic states and reveals the rich potential of the MoSe2/WSe2 platform.
NPJ 2D MATERIALS AND APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
D. J. Lahneman, Tetiana Slusar, D. B. Beringer, Haoyue Jiang, Chang-Yong Kim, Hyun-Tak Kim, M. M. Qazilbash
Summary: An insulator-to-metal transition (IMT) is a characteristic of quantum materials. Research on vanadium dioxide (VO2) films reveals that IMT can occur in the rutile structure without Peierls lattice distortion.
NPJ QUANTUM MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ahyoung Kim, Soo Yeon Lim, Jung Hyun Park, Jin-Seok Chung, Hyeonsik Cheong, Changhyun Ko, Jong-Gul Yoon, Sang Mo Yang
Summary: This study investigated the temperature-dependent nanoscale conduction in a VO2 film using C-AFM, revealing conductive regions near grain boundaries and the coexistence of different monoclinic phases. Further analysis using I-V spectroscopy and deep data analysis identified the conduction mechanism as the Poole-Frenkel mechanism. This work provides deep insight into the behavior of VO2 thin films and highlights the power of I-V spectroscopy combined with deep data analysis.
Article
Materials Science, Multidisciplinary
Joel Hutchinson, Philipp W. Klein, Karyn Le Hur
Summary: This study introduces a stochastic functional approach for interacting topological insulators, including both charge and spin channels. The Mott transition of the Kane-Mele-Hubbard model is found to be described by a variational principle with one equation, and different viewpoints are presented. The stability of the transition line towards fluctuations is demonstrated, and the Mott phase is characterized by antiferromagnetism in the x-y plane, while the interacting topological phase is described through a Z(2) number related to helical edge modes. These results suggest that further insight on understanding interacting phases of matter can be gained through improving stochastic approaches.
Article
Physics, Multidisciplinary
Shraddha Sharma, Simon B. Jaeger, Rebecca Kraus, Tommaso Roscilde, Giovanna Morigi
Summary: The ground-state entanglement entropy of the extended Bose-Hubbard model with infinite-range interactions was studied. Different behaviors of entanglement entropy were observed at the insulator-superfluid transition under different fillings, as well as the presence of a critical logarithmic term at the superfluid-to-supersolid transition.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
J. P. Hague, L. Petit, C. MacCormick
Summary: This study explores the use of programmable optical lattices for quantum simulation of Hubbard models, finding that they are flexible for emulating complex systems and studying strong correlations and impurity effects. The results indicate that programmable optical lattices show great potential in simulating Hubbard models with arbitrary structures and characteristics.
Article
Physics, Multidisciplinary
Igor N. Karnaukhov
Summary: In this study, the topological Mott transition in a two-band model of spinless fermions on a square lattice at half filling was investigated by considering the combined effect of the on-site Coulomb repulsion and the spin-orbit Rashba coupling. The ground state phase diagram was calculated, revealing a distinct phase of matter called the topological semimetal resulting from the spin-orbit Rashba coupling. A new type of phase transition between the non-topological insulator and topological semimetal states was studied.
Article
Physics, Multidisciplinary
Bolun Chen, Jan R. Engelbrecht, Renato Mirollo
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2017)
Article
Physics, Multidisciplinary
Liu Lan-Feng, Chen Bo-Lun, Kou Su-Peng
COMMUNICATIONS IN THEORETICAL PHYSICS
(2011)
Article
Physics, Applied
Bo-Lun Chen, Su-Peng Kou
MODERN PHYSICS LETTERS B
(2011)
Article
Optics
Bo-Lun Chen, Su-Peng Kou, Yunbo Zhang, Shu Chen
Article
Mathematics, Applied
Bolun Chen, Jan R. Engelbrecht, Renato Mirollo
Article
Physics, Fluids & Plasmas
Bolun Chen, Jan R. Engelbrecht, Renato Mirollo
