Publisher’s Note: Dynamics and Transport of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Z</mml:mi><mml:mn>2</mml:mn></mml:msub></mml:math>Spin Liquid: Application to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>κ</mml:mi><mml:mtext mathvariant="normal">−</mml:mtext><mml:mo stretchy="false">(</mml:mo><mml:mi>ET</mml:mi><mml:msub><mml:mo stretchy="false">)</mml:mo><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>Cu</mml:mi><

Qi, Yang; Xu, Cenke; Sachdev, Subir

doi:10.1103/physrevlett.102.189903

Cited by 53 publications

(74 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although it is as yet not entirely clear whether or not existing spin-liquid models [48][49][50][51][52][53][54][55][56] with appropriate modifications can explain the above anomalies, it appears that for κ-CN and possibly dmit-Sb, spin degrees of freedom alone cannot describe the low temperature (below 6K in κ-CN and below 1K in dmit-Sb) properties. Rather, any description of the ground state must involve charge as well as spin degrees of freedom.…”

Section: κ-(Et)2cu2(cn)3 and Etme3sb[pd(dmit)2]2: Qsl Or Charge-disprmentioning

confidence: 99%

“…There has been much recent interest in these CTS 69 specifically because they present possible realizations of the long awaited QSL [48][49][50][51][52][53][54][55][56] . In both cases the materials have nearly isotropic triangular lattices of dimer unit cells (corresponding to Fig.…”

Section: κ-(Et)2cu2(cn)3 and Etme3sb[pd(dmit)2]2: Qsl Or Charge-disprmentioning

confidence: 99%

“…In section IV we discuss the relevance of our results for several classes of ρ = 1 2 materials and the outlook for understanding unconventional SC. We particularly emphasize the cases of the organic charge-transfer solids CTS κ-(BEDT-TTF) 2 Cu 2 (CN) 3 and EtMe 3 Sb[Pd(dmit) 2 ] 2 which have been described as QSLs within the effective ρ = 1 scenario [48][49][50][51][52][53][54][55][56] . We believe frustration-induced charge disproportionation is an alternate possibility.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Paired electron crystal: Order from frustration in the quarter-filled band

et al. 2011

View full text Add to dashboard Cite

We present a study of the effects of simultaneous charge-and spin-frustration on the twodimensional strongly correlated quarter-filled band on an anisotropic triangular lattice. Our conclusions are based on exact diagonalization studies that include electron-electron interactions as well as adiabatic electron-phonon coupling terms treated self-consistently. The broken-symmetry states that dominate in the weakly frustrated region near the rectangular lattice limit are the well known antiferromagnetic state with in-phase lattice dimerization along one direction, and the Wigner crystal state with the checkerboard charge order. For moderate to strong frustration, however, the dominant phase is a novel spin-singlet paired-electron crystal (PEC), consisting of pairs of charge-rich sites separated by pairs of charge-poor sites. The PEC, with coexisting charge-order and spin-gap in two dimension, is the quarter-filled band equivalent of the valence bond solid (VBS) that can appear in the frustrated half-filled band within antiferromagnetic spin Hamiltonians. We discuss the phase diagram as a function of on-site and intersite Coulomb interactions as well as electronphonon coupling strength. We speculate that the spin-bonded pairs of the PEC can become mobile for even stronger frustration, giving rise to a paired-electron liquid. We discuss the implications of the PEC concept for understanding several classes of quarter-filled band materials that display unconventional superconductivity, focusing in particular on organic charge transfer solids. Our work points out the need to go beyond quantum spin liquid (QSL) concepts for highly frustrated organic charge-transfer solids such as κ-(BEDT-TTF)2Cu2(CN)3 and EtMe3Sb[Pd(dmit)2]2, which we believe show frustration-induced charge disproportionation at low temperatures. We discuss possible application to layered cobaltates and 1 4 -filled band spinels.

show abstract

Section: κ-(Et)2cu2(cn)3 and Etme3sb[pd(dmit)2]2: Qsl Or Charge-disprmentioning

confidence: 99%

Section: κ-(Et)2cu2(cn)3 and Etme3sb[pd(dmit)2]2: Qsl Or Charge-disprmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Paired electron crystal: Order from frustration in the quarter-filled band

et al. 2011

View full text Add to dashboard Cite

show abstract

“…This analysis method has been found to work well in practice [15,16] and provides a systematic way of testing the experimental data obtained for QSL systems against any current and future theories that can predict these critical exponents. It should be noted that the specific Z 2 QSL theories [12,13] that are referenced here provide results that are expected to apply beyond the simple frustrated triangular lattice to classes such as kagome and honeycomb lattices. Recent results on a more complex quasi-honeycomb system have provided an example of this [14].…”

Section: Resultsmentioning

confidence: 95%

“…For a gapless QSL with a spinon Fermi surface coupled to a U(1) gauge field, a quantum Boltzmann spinon transport theory [11] leads to the prediction D 2D ~ T -1/3 . For the QC theory of Qi et al [12] for a Z 2 QSL the power law becomes D 2D ~ T -2/-2 where  is the critical exponent of the correlation length. This behaviour is illustrated in the inset to Fig.3 from which it can be seen that the T dependence of D 2D provides a sensitive measure of the critical parameter .…”

Section: Spinon Diffusion From Lf-srmentioning

confidence: 99%

Probing Quantum Critical Spin Liquids with μSR

Pratt

2018

Proceedings of the 14th International Conference on Muon Spin Rotation, Relaxation and Resonance (ΜSR2017)

View full text Add to dashboard Cite

Zero field SR measurements taken down to milliKelvin temperatures are commonly used to screen a candidate quantum spin liquid system against a transition to an alternative spin-ordered or spin-frozen ground state. For systems that survive this test to low temperatures SR can also be used to probe the intrinsic nature of the quantum spin liquid state. Since such a state may be regarded as a magnetic phase whose transition temperature has been suppressed to zero, it behaves as a quantum critical phase with characteristic critical exponents that can be predicted by specific theories and determined by experiment. The use of ZF, LF and TF SR techniques to determine these quantum critical exponents is discussed.

show abstract

Thermal‐Transport Studies on Two‐Dimensional Quantum Spin Liquids

2011

View full text Add to dashboard Cite

Quantum spin liquids (QSLs) are fluidlike states of quantum spins in which the long-range ordered state is destroyed by quantum fluctuations. The ground state of QSLs and their exotic phenomena, which have been extensively discussed for decades, have yet to be identified. We employ thermal-transport measurements on newly discovered QSL candidates κ-(BEDT-TTF)(2)Cu(2)(CN)(3) and EtMe(3)Sb[Pd(dmit)(2)](2), and report that the two organic insulators have different QSLs characterized by different elementary excitations. In κ-(BEDT-TTF)(2)Cu(2)(CN)(3), heat transport is thermally activated at low temperatures, and this suggests the presence of a spin gap in this QSL. In stark contrast, in EtMe(3)Sb[Pd(dmit)(2)](2), a sizable linear temperature dependence of thermal conductivity is clearly resolved in the zero-temperature limit, and shows gapless excitation with a long mean free path (ca. 1000 lattice distances). Such a long mean free path demonstrates a novel feature of QSL as a quantum-condensed state with long-distance coherence.

show abstract

Publisher’s Note: Dynamics and Transport of theZ2Spin Liquid: Application toκ−(ET)2Cu<

Cited by 53 publications

References 0 publications

Paired electron crystal: Order from frustration in the quarter-filled band

Paired electron crystal: Order from frustration in the quarter-filled band

Probing Quantum Critical Spin Liquids with μSR

Thermal‐Transport Studies on Two‐Dimensional Quantum Spin Liquids

Contact Info

Product

Resources

About