scholarly journals Influence of short-range spin correlations on theμSR polarization functions in the slow dynamic limit: Application to the quantum spin-liquid system Yb2Ti2O7

2013 ◽  
Vol 87 (13) ◽  
Author(s):  
A. Yaouanc ◽  
A. Maisuradze ◽  
P. Dalmas de Réotier
Keyword(s):  
Short Range ◽  
Liquid System ◽  
Quantum Spin ◽  
Spin Liquid ◽  
Slow Dynamic ◽  
Spin Correlations ◽  
Polarization Functions ◽  
Quantum Spin Liquid

scholarly journals Magnetic field-induced intermediate quantum spin liquid with a spinon Fermi surface

2019 ◽  
Vol 116 (25) ◽  
pp. 12199-12203 ◽  
Author(s):  
Niravkumar D. Patel ◽  
Nandini Trivedi
Keyword(s):  
Magnetic Field ◽  
Fermi Surface ◽  
Intermediate Phase ◽  
Quantum Spin ◽  
Spin Liquid ◽  
Spin Correlations ◽  
Density Matrix Renormalization ◽  
Static Spin ◽  
Kitaev Model ◽  
Quantum Spin Liquid

The Kitaev model with an applied magnetic field in the H∥[111] direction shows two transitions: from a nonabelian gapped quantum spin liquid (QSL) to a gapless QSL at Hc1≃0.2K and a second transition at a higher field Hc2≃0.35K to a gapped partially polarized phase, where K is the strength of the Kitaev exchange interaction. We identify the intermediate phase to be a gapless U(1) QSL and determine the spin structure function S(k) and the Fermi surface ϵFS(k) of the gapless spinons using the density matrix renormalization group (DMRG) method for large honeycomb clusters. Further calculations of static spin-spin correlations, magnetization, spin susceptibility, and finite temperature-specific heat and entropy corroborate the gapped and gapless nature of the different field-dependent phases. In the intermediate phase, the spin-spin correlations decay as a power law with distance, indicative of a gapless phase.

scholarly journals Spin correlations of quantum spin liquid and quadrupole-ordered states of Tb2+xTi2−xO7+y

2019 ◽  
Vol 99 (1) ◽  
Author(s):  
Hiroaki Kadowaki ◽  
Mika Wakita ◽  
Björn Fåk ◽  
Jacques Ollivier ◽  
Seiko Ohira-Kawamura ◽  
...  
Keyword(s):  
Quantum Spin ◽  
Spin Liquid ◽  
Spin Correlations ◽  
Quantum Spin Liquid

Pressure-induced antiferromagnetic order in a quantum spin liquid system Cu2(C5H12N2)2Br4

2004 ◽  
Vol 272-276 ◽  
pp. 952-953 ◽  
Author(s):  
H. Deguchi ◽  
Y. Mori ◽  
S. Watanabe ◽  
T. Tajiri ◽  
M. Mito ◽  
...  
Keyword(s):  
Liquid System ◽  
Quantum Spin ◽  
Antiferromagnetic Order ◽  
Spin Liquid ◽  
Quantum Spin Liquid

scholarly journals Superconductivity in the doped quantum spin liquid on the triangular lattice

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Hong-Chen Jiang
Keyword(s):  
Large Scale ◽  
High Temperature Superconductivity ◽  
Quantum Spin ◽  
Spin Liquid ◽  
Electron Pairs ◽  
Pair Correlations ◽  
Spin Correlations ◽  
Definitive Evidence ◽  
Density Matrix Renormalization ◽  
Quantum Spin Liquid

AbstractBroad interest in quantum spin liquid (QSL) phases was triggered by the notion that they can be viewed as insulating phases with preexisting electron pairs, such that upon light doping they might automatically yield high temperature superconductivity. Yet despite intense experimental and numerical efforts, definitive evidence showing that doping QSLs leads to superconductivity has been lacking. We address the problem of a lightly doped QSL through a large-scale density-matrix renormalization group study of the t-J model on finite-circumference triangular cylinders with a small but nonzero concentration of doped holes. We provide direct evidences that doping QSL can naturally give rise to d-wave superconductivity. Specifically, we find power-law superconducting correlations with a Luttinger exponent, Ksc ≈ 1, which is consistent with a strongly diverging superconducting susceptibility, $${\chi }_{sc} \,\sim\, {T}^{-(2\,-\,{K}_{sc})}$$ χ s c ~ T − ( 2 − K s c ) as the temperature T → 0. The spin–spin correlations—as in the undoped QSL state—fall exponentially which suggests that the superconducting pair-pair correlations evolve smoothly from the insulating parent state.

scholarly journals Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Oliver Hart ◽  
Yuan Wan ◽  
Claudio Castelnovo
Keyword(s):  
Transport Properties ◽  
Realistic Model ◽  
Feedback Mechanism ◽  
Quantum Spin ◽  
Spin Liquid ◽  
Spin Liquids ◽  
Slow Dynamics ◽  
Temperature Dependent ◽  
Quantum Spin Liquids ◽  
Quantum Spin Liquid

AbstractRealistic model Hamiltonians for quantum spin liquids frequently exhibit a large separation of energy scales between their elementary excitations. At intermediate, experimentally relevant temperatures, some excitations are sparse and hop coherently, whereas others are thermally incoherent and dense. Here, we study the interplay of two such species of quasiparticle, dubbed spinons and visons, which are subject to nontrivial mutual statistics – one of the hallmarks of quantum spin liquid behaviour. Our results for $${{\mathbb{Z}}}_{2}$$ Z 2 quantum spin liquids show an intriguing feedback mechanism, akin to the Nagaoka effect, whereby spinons become localised on temperature-dependent patches of expelled visons. This phenomenon has important consequences for the thermodynamic and transport properties of the system, as well as for its response to quenches in temperature. We argue that these effects can be measured in experiments and may provide viable avenues for obtaining signatures of quantum spin liquid behaviour.

scholarly journals Gapless Quantum Spin Liquid in the Triangular System Sr3CuSb2O9

2020 ◽  
Vol 125 (26) ◽  
Author(s):  
S. Kundu ◽  
Aga Shahee ◽  
Atasi Chakraborty ◽  
K. M. Ranjith ◽  
B. Koo ◽  
...  
Keyword(s):  
Quantum Spin ◽  
Spin Liquid ◽  
Triangular System ◽  
Quantum Spin Liquid
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