Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Laad, M. S."'
We investigate two variants of quantum compass models (QCMs). The first, an orbital-only honeycomb QCM, is shown to exhibit a quantum phase transition (QPT) from a $XX$- to $ZZ$-ordered phase in the $3d$-Ising universality class, in accord with earli
Externí odkaz:
http://arxiv.org/abs/2206.15199
Publikováno v:
Phys. Rev. B 103, 144419 (2021)
We introduce a novel mean-field theory (MFT) around the exactly soluble two-leg ladder limit for the planar quantum compass model (QCM). In contrast to usual MFT, our construction respects the stringent constraints imposed by emergent, lower (here $d
Externí odkaz:
http://arxiv.org/abs/2101.00268
Autor:
Hazra, D., Haldar, Prosenjit, Laad, M. S., Tsavdaris, N., Mukhtarova, A., Jacquemin, M., Albert, R., Blanchet, F., Jebari, S., Grimm, A., Blanquet, E., Mercier, F., Chapelier, C., Hofheinz, M., Raychaudhuri, Pratap
In contrast to the Landau paradigm, a metal-insulator transition (MIT), driven purely by competition between itinerance and localization and unaccompanied by any conventional (e.g, magnetic) order-disorder instabilities, admits no obvious local order
Externí odkaz:
http://arxiv.org/abs/1906.11209
Publikováno v:
Phys. Rev. B 99, 125147 (2019)
A wide range of disordered materials, including disordered correlated systems, show "Universal Dielectric Response" (UDR), followed by a superlinear power-law increase in their optical responses over exceptionally broad frequency regimes. While exten
Externí odkaz:
http://arxiv.org/abs/1803.03194
Autor:
Freelon, B., Yamani, Z., Swainson, Ian, Flauca, R., Liu, Yu Hao, Craco, L., Laad, M. S., Wang, Meng, Chen, Jiaqi, Birgeneau, R. J., Fang, Minghu
Publikováno v:
Phys. Rev. B 99, 024109 (2019)
We present the results of structural and magnetic phase comparisons of the iron oxychalcogenides La$_{2}$O$_{2}$Fe$_{2}$O$M$$_{2}$ ($M$ = S, Se). Elastic neutron scattering reveals that $M$ = S and Se have similar nuclear structures at room and low t
Externí odkaz:
http://arxiv.org/abs/1801.00342
The fate of exotic spin liquid states with fractionalized excitations at finite temperature ($T$) is of great interest, since signatures of fractionalization manifest in finite-temperature ($T$) dynamics in real systems, above the tiny magnetic order
Externí odkaz:
http://arxiv.org/abs/1703.08200
Publikováno v:
ScienTific REPORTS 7, 10993, 2017
Motivated by the remarkable discovery of superconductivity in elemental Bismuth, we study its normal state in detail using a combination of tight-binding (TB) and-structural supplemented by dynamical mean-field theory (DMFT). We show that a two-fluid
Externí odkaz:
http://arxiv.org/abs/1611.08476
Publikováno v:
Phys. Rev. B 97, 075133 (2018)
A single transport relaxation rate governs the decay of both, longitudinal and Hall currents in Landau Fermi Liquids (LFL). Breakdown of this fundamental feature, first observed in cuprates and subsequently in other three-dimensional correlated syste
Externí odkaz:
http://arxiv.org/abs/1611.07594
Publikováno v:
Phys. Rev. B 96, 085126 (2017)
Strain tuning is increasingly being recognized as a clean tuning parameter to induce novel behavior in quantum matter. Motivated by the possibility of straining graphene up to $20$ percent, we investigate novel quantum criticality due to interplay be
Externí odkaz:
http://arxiv.org/abs/1611.04518
Publikováno v:
Scientific Reports 7, Article number: 43033 (2017)
The interplay between multiple bands, sizable multi-band electronic correlations and strong spin-orbit coupling may conspire in selecting a rather unusual unconventional pairing symmetry in layered Sr$_{2}$RuO$_{4}$. This mandates a detailed revisit
Externí odkaz:
http://arxiv.org/abs/1608.02914