Zobrazeno 1 - 10
of 628
pro vyhledávání: '"Balents, Leon"'
We propose a variational approach to explore quasiparticle excitations in interacting quantum many-body systems, motivated by the potential in leveraging near-term noisy intermediate scale quantum devices for quantum state preparation. By exploiting
Externí odkaz:
http://arxiv.org/abs/2409.08545
We present the theory of the longitudinal spin Seebeck effect between a Heisenberg spin-1/2 chain and a conductor. The effect consists of the generation of a spin current across the spin chain-conductor interface in response to the temperature differ
Externí odkaz:
http://arxiv.org/abs/2409.08327
Autor:
Gao, Bin, Chen, Tong, Liu, Chunxiao, Klemm, Mason L., Zhang, Shu, Ma, Zhen, Xu, Xianghan, Won, Choongjae, McCandless, Gregory T., Murai, Naoki, Ohira-Kawamura, Seiko, Moxim, Stephen J., Ryan, Jason T., Huang, Xiaozhou, Wang, Xiaoping, Chan, Julia Y., Cheong, Sang-Wook, Tchernyshyov, Oleg, Balents, Leon, Dai, Pengcheng
In magnetically ordered insulators, elementary quasiparticles manifest as spin waves - collective motions of localized magnetic moments propagating through the lattice - observed via inelastic neutron scattering. In effective spin-1/2 systems where g
Externí odkaz:
http://arxiv.org/abs/2408.15957
Autor:
Ni, Zhuoliang, Seifert, Urban, Haglund, Amanda V., Huang, Nan, Mandrus, David G., Balents, Leon, Wu, Liang
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 negligible when the magnetic field is small so that the induced anisotropic
Externí odkaz:
http://arxiv.org/abs/2404.06010
We systematically derive the quantum kinetic equation in full phase space for any quadratic hamiltonian of bosonic fields, including in the absence of translational invariance. This enables the treatment of boundaries, inhomogeneous systems and state
Externí odkaz:
http://arxiv.org/abs/2402.17329
Autor:
Allington, Clifford J., Belvin, Carina A., Seifert, Urban F. P., Ye, Mengxing, Tai, Tommy, Baldini, Edoardo, Son, Suhan, Kim, Junghyun, Park, Jaena, Park, Je-Geun, Balents, Leon, Gedik, Nuh
The control of antiferromagnets with ultrashort optical pulses has emerged as a prominent field of research. Tailored laser excitation can launch coherent spin waves at terahertz frequencies, yet a comprehensive description of their generation mechan
Externí odkaz:
http://arxiv.org/abs/2402.17041
Autor:
Park, Takamori, Balents, Leon
Publikováno v:
SciPost Phys. 16, 069 (2024)
Inspired by the recent work by Delacretaz et. al., we rigorously derive an exact and simple method to bosonize a non-interacting fermionic system with a Fermi surface starting from a microscopic Hamiltonian. In the long-wavelength limit, we show that
Externí odkaz:
http://arxiv.org/abs/2310.04636
In this work, we study a slave-rotor mean-field theory of an extended Hubbard model, applicable to transition metal dichalcogenide moir\'e systems, that captures both the formation of Wigner crystals as well as exotic spin states on top of these char
Externí odkaz:
http://arxiv.org/abs/2307.05676
Autor:
Ennis, Matthew, Bag, Rabindranath, Liu, Chunxiao, Dissanayake, Sachith E., Kolesnikov, Alexander I., Balents, Leon, Haravifard, Sara
We have synthesized high-quality single crystal samples of the erbium-based triangular lattice compound Ba3Er(BO3)3. Thermal and magnetic measurements reveal large anisotropy and a possible phase transition at 100 mK. The low-temperature magnetic hea
Externí odkaz:
http://arxiv.org/abs/2306.02463
Publikováno v:
Phys. Rev. B 108, 184417 (2023)
We present experimental and theoretical evidence of novel bound state formation in the low transverse field ordered phase of the quasi-one-dimensional Ising-like material CoNb$_2$O$_6$. High resolution single crystal inelastic neutron scattering meas
Externí odkaz:
http://arxiv.org/abs/2306.01948