Results 51 to 60 of about 1,715,781 (121)

Dirac Fermion Hierarchy of Composite Fermi Liquids. [PDF]

Physical Review Letters, 2018
Composite Fermi liquids (CFLs) are compressible states that can occur for 2D interacting fermions confined in the lowest Landau level at certain Landau level fillings.
Jie Wang
semanticscholar   +1 more source

Ultraviolet fixed point and massive composite particles in TeV scales

Physics Letters B, 2014
We present a further study of the dynamics of high-dimension fermion operators attributed to the theoretical inconsistency of the fundamental cutoff (quantum gravity) and the parity-violating gauge symmetry of the standard model.
She-Sheng Xue
doaj   +1 more source

Bipartite composite fermion States. [PDF]

Physical Review Letters, 2013
We study a class of ansatz wave functions in which composite fermions form two correlated "partitions." These "bipartite" composite fermion states are demonstrated to be very accurate for electrons in a strong magnetic field interacting via a short-range
G. Sreejith, Ying-Hai Wu, Arakadiusz Wojs, Jainendra K. Jain   +3 more
semanticscholar   +1 more source

Trial Wavefunctions for the Goldstone Mode in 𝜈=1/2+1/2 Quantum Hall Bilayers

Advances in Condensed Matter Physics, 2011
Based on the known physics of the excitonic superfluid or 111 state of the quantum Hall 𝜈=1/2+1/2 bilayer, we create a simple trial wavefunction ansatz for constructing a low-energy branch of (Goldstone) excitations by taking the overall ground state ...
Gunnar Möller, Steven H. Simon
doaj   +1 more source

Resonant and nonresonant new phenomena of four-fermion operators for experimental searches

Physics Letters B, 2015
In the fermion content and gauge symmetry of the standard model (SM), we study the four-fermion operators in the torsion-free Einstein–Cartan theory. The collider signatures of irrelevant operators are suppressed by the high-energy cutoff (torsion-field ...
She-Sheng Xue
doaj   +1 more source

Coupled first-order transitions and unconventional superfluidity in a Fermi-Bose mixture

Physical Review Research, 2020
A model of a mixture of spinless fermions and spin-zero hardcore bosons, with filling fractions ρ_{F} and ρ_{B}, respectively, on a two-dimensional square lattice with composite hopping t is presented.
K. Sheshadri, A. Chainani
doaj   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source

Symmetry Enhanced Unconventional Spin Current Anisotropy in a Collinear Antiferromagnet

Advanced Functional Materials, EarlyView.
Spin‐orbit torques (SOTs) are investigated in epitaxial FeSn, a topological antiferromagnet with kagome lattice symmetry. Combining experimental and theoretical approaches, the study identifies a six‐fold conventional damping‐like spin‐orbit torque (DL SOT), along with the coexistence of both six‐fold and uniaxial unconventional field‐like torque (FL ...
Pankhuri Gupta, Kacho Imtiyaz Ali Khan, Akash Kumar, Pratik Sahu, Rekha Agarwal, Artem Litvinenko, Nidhi Kandwal, Ram Singh Yadav, Birabar Ranjit Kumar Nanda, Johan Åkerman, Pranaba Kishor Muduli   +10 more
wiley   +1 more source

W boson mass tension caused by its right-handed gauge coupling at high energies?

Nuclear Physics B, 2022
The CDF collaboration's recent high-precision measurement of the W mass is in 7.0σ disagreement with the Standard Model expectation. This tension will be relieved if the W boson has a non-trivial right-handed gauge coupling at high energies.
She-Sheng Xue
doaj   +1 more source

Large Anomalous and Topological Hall Effect and Nernst Effect in a Dirac Kagome Magnet Fe3Ge

Advanced Functional Materials, EarlyView.
Fe3Ge, a Kagome‐lattice magnet, exhibits remarkable anomalous Hall and Nernst effects, with transverse thermoelectric conductivity surpassing or comaprable to some well‐known ferromagnets. First‐principles calculations attribute these to Berry curvature from massive Dirac gaps. Additionally, topological Hall and Nernst signals emerge from field‐induced
Chunqiang Xu, Shuvankar Gupta, Hengxin Tan, Hyeonhu Bae, Olajumoke Oluwatobiloba Emmanuel, Mingyu Xu, Yan Wu, Xiaofeng Xu, Pengpeng Zhang, Weiwei Xie, Binghai Yan, Xianglin Ke   +11 more
wiley   +1 more source