arXiv - PHYS - Strongly Correlated Electrons最新文献_第2页

Hilbert Space Fragmentation in the Chiral Luttinger Liquid 手性鲁丁格液体中的希尔伯特空间碎片

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-16 DOI: arxiv-2409.10359

Alexandre Chaduteau, Nyan Raess, Henry Davenport, Frank Schindler

引用次数: 0

Electronic vs. phononic thermal transport in Cr-doped V2O3 thin films across the Mott transition 掺杂铬的 V2O3 薄膜中跨越莫特转变的电子热传输与声子热传输

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-16 DOI: arxiv-2409.10748

Johannes Mohr, Kiumars Aryana, Md. Rafiqul Islam, Dirk J. Wouters, Rainer Waser, Patrick E. Hopkins, Joyeeta Nag, Daniel Bedau

{"title":"Electronic vs. phononic thermal transport in Cr-doped V2O3 thin films across the Mott transition","authors":"Johannes Mohr, Kiumars Aryana, Md. Rafiqul Islam, Dirk J. Wouters, Rainer Waser, Patrick E. Hopkins, Joyeeta Nag, Daniel Bedau","doi":"arxiv-2409.10748","DOIUrl":"https://doi.org/arxiv-2409.10748","url":null,"abstract":"Understanding the thermal conductivity of chromium doped V2O3 is crucial for\u0000optimizing the design of selectors for memory and neuromorphic devices. We\u0000utilized the time-domain thermoreflectance technique to measure the thermal\u0000conductivity of chromium doped V2O3 across varying concentrations, spanning the\u0000doping induced metal-insulator transition. In addition, different oxygen\u0000stoichiometries and film thicknesses were investigated in their crystalline and\u0000amorphous phases. Chromium doping concentration (0%-30%) and the degree of\u0000crystallinity emerged as the predominant factors influencing the thermal\u0000properties, while the effect of oxygen flow (600-1400 ppm) during deposition\u0000proved to be negligible. Our observations indicate that even in the metallic\u0000phase of V2O3, the lattice contribution is the dominant factor in thermal\u0000transport with no observable impact from the electrons on heat transport.\u0000Finally, the thermal conductivity of both amorphous and crystalline V2O3 was\u0000measured at cryogenic temperatures (80-450 K). Our thermal conductivity\u0000measurements as a function of temperature reveal that both phases exhibit\u0000behavior similar to amorphous materials, indicating pronounced phonon\u0000scattering effects in the crystalline phase of V2O3.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bootstrapping the Quantum Hall problem 引导量子霍尔问题

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-16 DOI: arxiv-2409.10619

Qiang Gao, Ryan A. Lanzetta, Patrick Ledwith, Jie Wang, Eslam Khalaf

{"title":"Bootstrapping the Quantum Hall problem","authors":"Qiang Gao, Ryan A. Lanzetta, Patrick Ledwith, Jie Wang, Eslam Khalaf","doi":"arxiv-2409.10619","DOIUrl":"https://doi.org/arxiv-2409.10619","url":null,"abstract":"The bootstrap method aims to solve problems by imposing constraints on the\u0000space of physical observables, which often follow from physical assumptions\u0000such as positivity and symmetry. Here, we employ a bootstrap approach to study\u0000interacting electrons in the lowest Landau level by minimizing the energy as a\u0000function of the static structure factor subject to a set of constraints,\u0000bypassing the need to construct the full many-body wavefunction. This approach\u0000rigorously lower bounds the ground state energy, making it complementary to\u0000conventional variational upper bounds. We show that the lower bound we obtain\u0000is relatively tight, within at most 5% from the ground state energy computed\u0000with exact diagonalization (ED) at small system sizes, and generally gets\u0000tighter as we include more constraints. In addition to energetics, our results\u0000reproduce the correct power law dependence of the pair correlation function at\u0000short distances and the existence of a large entanglement gap in the\u0000two-particle entanglement spectra for the Laughlin states at $nu = 1/3$. We\u0000further identify signatures of the composite Fermi liquid state close to\u0000half-filling. This shows that the bootstrap approach is capable, in principle,\u0000of describing non-trivial gapped topologically ordered, as well as gapless,\u0000phases. At the end, we will discuss possible extensions and limitations of this\u0000approach. Our work establishes numerical bootstrap as a promising method to\u0000study many-body phases in topological bands, paving the way to its application\u0000in moir'e platforms where the energetic competition between fractional quantum\u0000anomalous Hall, symmetry broken, and gapless states remains poorly understood.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Successive topological phase transitions in two distinct spin-flop phases on the honeycomb lattice 蜂巢晶格上两种截然不同的自旋翻转相中的连续拓扑相变

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-16 DOI: arxiv-2409.10439

Xudong Li, Jize Zhao, Jinbin Li, Qiang Luo

{"title":"Successive topological phase transitions in two distinct spin-flop phases on the honeycomb lattice","authors":"Xudong Li, Jize Zhao, Jinbin Li, Qiang Luo","doi":"arxiv-2409.10439","DOIUrl":"https://doi.org/arxiv-2409.10439","url":null,"abstract":"The Kitaev magnets with bond-dependent interactions have garnered\u0000considerable attention in recent years for their ability to harbor exotic\u0000phases and nontrivial excitations. The topological magnons, which are indicated\u0000by nonzero Chern number and thermal Hall conductivity, are proposed to\u0000partially explain thermal Hall measurements in real materials. Hitherto,\u0000topological magnons have been extensively explored when the magnetic field is\u0000normal to the honeycomb plane, but their topological characteristics are less\u0000studied in the presence of in-plane magnetic field. Here, we study two distinct\u0000in-plane field induced spin-flop phases in the $Gamma$-$Gamma'$ model, both\u0000of which are off-diagonal couplings that have intimate relation to the Kitaev\u0000interaction. The two spin-flop phases are distinguished by their out-of-plane\u0000spin components which can be either antiparallel or parallel, thus dubbing\u0000antiferromagnetic (AFM) or ferromagnetic (FM) spin-flop phases, respectively.\u0000We map out topological phase diagrams for both phases, revealing a rich pattern\u0000of the Chern number over exchange parameters and magnetic field. We\u0000analytically calculate the boundaries of topological phase transitions when the\u0000magnetic field is along the $a$ and $b$ directions. We find that the thermal\u0000Hall conductivity and its derivative display contrasting behaviors when\u0000crossing different topological phase transitions. The striking difference of\u0000the two phases lies in that when the magnetic field is along the $b$ direction,\u0000topological magnons are totally absent in the AFM spin-flop phase, while they\u0000can survive in the FM analogue in certain parameter regions.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"77 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Full distribution of local observables in an exactly solvable current carrying steady states of a driven XXZ chain 驱动的 XXZ 链的精确可解载流稳态中局部观测值的全分布

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-16 DOI: arxiv-2409.10458

Sandipan Manna, G J Sreejith

{"title":"Full distribution of local observables in an exactly solvable current carrying steady states of a driven XXZ chain","authors":"Sandipan Manna, G J Sreejith","doi":"arxiv-2409.10458","DOIUrl":"https://doi.org/arxiv-2409.10458","url":null,"abstract":"Current carrying steady states of interacting spins chains exhibit rich\u0000structures generated through an interplay of current induced correlations and\u0000energetic constraints from the Hamiltonian. The XXZ spin chain when coupled to\u0000maximally polarizing Lindblad terms admits an exact solution in a matrix\u0000product state (MPS) form. We use this exact solution to study the correlations\u0000and distributions of simple local spin observables in the non equilibrium\u0000steady state (NESS). We present exact expressions for spin correlators, entropy\u0000per site, cumulant generating functions for distributions of local observables\u0000in the XX limit (Ising anisotropy $Delta=0$). Further, we use the exact MPS\u0000solution in systems with $Delta>0$, to numerically exactly calculate the\u0000entropy, correlations, as well as distributions of spin observables in blocks\u0000as large as $nsim 200$ sites allowing an estimation of the rate functions. The\u0000$z$ magnetization distribution is consistant with short range spin correlations\u0000in the $z$ direction while the $x$-magnetization shows a double peak structure\u0000at larger $Delta$ suggesting short range ferromagnetic ordering. We find that\u0000the distribution of $z$-magnetization sharpens for parameters where the current\u0000is maximized.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetization dependent anisotropic topological properties in EuCuP EuCuP 中与磁化有关的各向异性拓扑特性

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-16 DOI: arxiv-2409.10061

Jian Yuan, Xianbiao Shi, Hong Du, Xia Wang, Jinguang Cheng, Baotian Wang, Ruidan Zhong, Shihao Zhang, Yanfeng Guo

{"title":"Magnetization dependent anisotropic topological properties in EuCuP","authors":"Jian Yuan, Xianbiao Shi, Hong Du, Xia Wang, Jinguang Cheng, Baotian Wang, Ruidan Zhong, Shihao Zhang, Yanfeng Guo","doi":"arxiv-2409.10061","DOIUrl":"https://doi.org/arxiv-2409.10061","url":null,"abstract":"The correlation between magnetism and nontrivial topological band structure\u0000serves as a unique venue for discovering exotic topological properties.\u0000Combining magnetotransport measurements and first-principles calculations, we\u0000unveil herein that the hexagonal EuCuP holds topologically trivial state in the\u0000paramagnetic structure, while strong magnetization dependent anisotropic\u0000topological states in the spin-polarization structures. Specifically, it hosts\u0000a trivial topological state in the in-plane spin-polarization structure, while\u0000a Weyl semimetal state in the out-of-plane spin-polarization structure. Our\u0000scaling analysis suggests that the intrinsic Berry curvature in the\u0000spin-polarization structures can account for the observed large anisotropic\u0000anomalous Hall effect. First-principles calculations show that the\u0000magnetization and the spin-orbit coupling simultaneously play essential roles\u0000for the appearance of the four pairs of Weyl points in the out-of-plane\u0000spin-polarization structure. Our work therefore establishes in EuCuP the\u0000intimate relation between magnetism and the nontrivial topological states,\u0000which would be instructive for future study on this key issue of topological\u0000physics.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Many-body Keldysh Crossover in the DC-driven Haldane Spin Chain 直流驱动的霍尔丹自旋链中的多体凯尔迪什交叉

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-15 DOI: arxiv-2409.09578

Koichi Okazaki, Shun Okumura, Shintaro Takayoshi, Takashi Oka

引用次数: 0

Concurrence and entanglement on a 16-site spin-1/2 pyrochlore cluster 16 位自旋-1/2 锆石团簇上的共生与纠缠

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-15 DOI: arxiv-2409.09576

C. Wei, S. H. Curnoe

引用次数: 0

Direct evidence for anisotropic magnetic interaction in $α$-RuCl$_3$ from polarized inelastic neutron scattering 极化非弹性中子散射直接证明了 $α$-RuCl$_3$ 中各向异性的磁相互作用

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-13 DOI: arxiv-2409.08854

Markus Braden, Xiao Wang, Alexandre Bertin, Paul Steffens, Yixi Su

引用次数: 0

Negative charge transfer energy in correlated compounds 相关化合物中的负电荷转移能量

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-13 DOI: arxiv-2409.09176

Robert J. Green, George A. Sawatzky

引用次数: 0