arXiv - PHYS - Strongly Correlated Electrons最新文献_第4页

Electronic properties of the dimerized organic conductor $κ$-(BETS)$_2$Mn[N(CN)$_2$]$_3$ 二聚化有机导体 $κ$-(BETS)$_2$Mn[N(CN)$_2$]$_3$ 的电子特性

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-13 DOI: arxiv-2409.08656

Marvin Schmidt, Savita Priya, Zhijie Huang, Mark Kartsovnik, Natalia Kushch, Martin Dressel

{"title":"Electronic properties of the dimerized organic conductor $κ$-(BETS)$_2$Mn[N(CN)$_2$]$_3$","authors":"Marvin Schmidt, Savita Priya, Zhijie Huang, Mark Kartsovnik, Natalia Kushch, Martin Dressel","doi":"arxiv-2409.08656","DOIUrl":"https://doi.org/arxiv-2409.08656","url":null,"abstract":"The two-dimensional molecular conductor $kappa$-(BETS)$_2$Mn[N(CN)$_2$]$_3$\u0000undergoes a sharp metal-to-insulator phase transition at $T_{rm MI}approx$ 21\u0000K, which has been under scrutiny for many years. We have performed\u0000comprehensive infrared investigations along the three crystallographic\u0000directions as a function of temperature down to 10 K, complemented by electron\u0000spin resonance and dc-transport studies. The in-plane anisotropy of the optical\u0000conductivity is more pronounced than in any other $kappa$-type BEDT-TTF or\u0000related compounds. The metal-insulator transitions affects the molecular\u0000vibrations due to the coupling to the electronic system; in addition we observe\u0000a clear splitting of the charge-sensitive vibrational modes below $T_{rm MI}$\u0000that evidences the presence of two distinct BETS dimers in this compound. The\u0000Mn[N(CN)$_2$]$_3^-$ layers are determined by the chain structure of the anions\u0000resulting in a rather anisotropic behavior and remarkable temperature\u0000dependence of the vibronic features. At low temperatures the ESR properties are\u0000affected by the Mn$^{2+}$ ions via $pi$-$d$-coupling and antiferromagnetic\u0000ordering within the $pi$-spins: The $g$-factor shifts enormously with a\u0000pronounced in-plane anisotropy that flips as the temperature decreases; the\u0000lines broaden significantly; and the spin susceptibility increases upon cooling\u0000with a kink at the phase transition.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261800","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

Spinon spin current 自旋子自旋电流

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.08327

Ren-Bo Wang, Naveen Nishad, Anna Keselman, Leon Balents, Oleg A. Starykh

引用次数: 0

Nonlinear charge and thermal transport properties induced by orbital magnetic moment in chiral crystal cobalt monosilicide 手性晶体单硅化钴中轨道磁矩诱导的非线性电荷和热传输特性

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.08040

Kazuki Nakazawa, Terufumi Yamaguchi, Ai Yamakage

{"title":"Nonlinear charge and thermal transport properties induced by orbital magnetic moment in chiral crystal cobalt monosilicide","authors":"Kazuki Nakazawa, Terufumi Yamaguchi, Ai Yamakage","doi":"arxiv-2409.08040","DOIUrl":"https://doi.org/arxiv-2409.08040","url":null,"abstract":"The existence of exotic singularities in momentum space, such as spin-1\u0000excitations and Rarita-Schwinger-Weyl (RSW) fermions, has been discussed so far\u0000to explore unique phenomena in the nonmagnetic B20-type compounds. Meanwhile,\u0000the Nonlinear Thermo-Electric (NCTE) charge and thermal Hall effect, a response\u0000proportional to the cross product of the electric field and temperature\u0000gradient, is expected in this chiral material, yet remains unexplored in\u0000B20-type compounds. Here, based on $ab initio$ calculations and symmetry\u0000analysis, we quantitatively analyze the NCTE charge and thermal Hall effects in\u0000cobalt monosilicide, obtaining experimentally measurable values of NCTE charge\u0000and thermal Hall current along [111] direction, which is not expected for\u0000second-order current responses to the DC electric field. Furthermore, we\u0000demonstrate that these significant responses are enhanced around RSW fermions\u0000and spin-1 excitations. Additionally, we clarify that the NCTE Hall effect is\u0000solely governed by orbital magnetic moments due to the cancellation of Berry\u0000curvature contributions in cubic chiral crystals.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"85 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142180398","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

Unexpected changes in the band structure within AFM1 state of CeBi AFM1 态 CeBi 带状结构的意外变化

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.08125

Yevhen Kushnirenko, Brinda Kuthanazhi, Benjamin Schrunk, Evan O'Leary, Andrew Eaton, Robert-Jan Slager, Junyeong Ahn, Lin-Lin Wang, Paul C. Canfield, Adam Kaminski

引用次数: 0

Magnetic diffuse scattering of the $S$ = 5/2 fcc antiferromagnets Ba$_2$MnTeO$_6$ and Ba$_2$MnWO$_6$ S$ = 5/2 fcc 反铁磁体 Ba$_2$MnTeO$_6$ 和 Ba$_2$MnWO$_6$ 的磁扩散散射

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.08323

Otto H. J. Mustonen, Charlotte E. Pughe, Lucile Mangin-Thro, Robert Tarver, Heather M. Mutch, Helen C. Walker, Edmund J. Cussen

{"title":"Magnetic diffuse scattering of the $S$ = 5/2 fcc antiferromagnets Ba$_2$MnTeO$_6$ and Ba$_2$MnWO$_6$","authors":"Otto H. J. Mustonen, Charlotte E. Pughe, Lucile Mangin-Thro, Robert Tarver, Heather M. Mutch, Helen C. Walker, Edmund J. Cussen","doi":"arxiv-2409.08323","DOIUrl":"https://doi.org/arxiv-2409.08323","url":null,"abstract":"We have investigated the magnetic diffuse scattering of isostructural $S$ =\u00005/2 fcc antiferromagnets Ba$_2$MnTeO$_6$ and Ba$_2$MnWO$_6$ using polarized\u0000neutrons. Both materials display short-range correlated magnetism above their\u0000respective magnetic ordering temperatures of 20 K and 8 K. The spin\u0000correlations were analysed using a Reverse Monte Carlo approach. For\u0000Ba$_2$MnTeO$_6$, we find antiferromagnetic nearest-neighbor correlations along\u0000with ferromagnetic next-nearest neighbor correlations directly linked to the\u0000Type I order below $T_N$. For Ba$_2$MnWO$_6$, both the nearest-neighbor and\u0000next-nearest-neighbor spin correlations are antiferromagnetic in the\u0000paramagnetic state. The short-range spin correlations persist up to $T$ =\u00007$T_N$. The magnetic diffuse scattering was also fitted using Onsager\u0000reaction-field theory allowing us to evaluate the magnetic interactions in\u0000these materials. We obtained $J_1$ = -3.25(3) K and $J_2$ = 0.41(2) K for\u0000Ba$_2$MnTeO$_6$ and $J_1$ = -1.08(1) K and $J_2$ = -0.88(1) K for\u0000Ba$_2$MnWO$_6$. These interactions are comparable to previous results from\u0000inelastic neutron scattering experiments below $T_N$, which highlights the\u0000potential of the Onsager approach for the analysis of magnetic interactions.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261858","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

Evidence for field induced quantum spin liquid behavior in a spin-1/2 honeycomb magnet 自旋-1/2 蜂窝磁体中场诱导量子自旋液体行为的证据

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.07959

Gaoting Lin, Mingfang Shu, Qirong Zhao, Gang Li, Yinina Ma, Jinlong Jiao, Yuting Li, Guijing Duan, Qing Huang, Jieming Sheng, Alexander I. Kolesnikov, Lu Li, Liusuo Wu, Hongwei Chen, Rong Yu, Xiaoqun Wang, Zhengxin Liu, Haidong Zhou, Jie Ma

{"title":"Evidence for field induced quantum spin liquid behavior in a spin-1/2 honeycomb magnet","authors":"Gaoting Lin, Mingfang Shu, Qirong Zhao, Gang Li, Yinina Ma, Jinlong Jiao, Yuting Li, Guijing Duan, Qing Huang, Jieming Sheng, Alexander I. Kolesnikov, Lu Li, Liusuo Wu, Hongwei Chen, Rong Yu, Xiaoqun Wang, Zhengxin Liu, Haidong Zhou, Jie Ma","doi":"arxiv-2409.07959","DOIUrl":"https://doi.org/arxiv-2409.07959","url":null,"abstract":"One of the most important issues in modern condensed matter physics is the\u0000realization of fractionalized excitations, such as the Majorana excitations in\u0000the Kitaev quantum spin liquid. To this aim, the 3d-based Kitaev material\u0000Na2Co2TeO6 is a promising candidate whose magnetic phase diagram of B // a*\u0000contains a field-induced intermediate magnetically disordered phase within 7.5\u0000T < |B| < 10 T. The experimental observations, including the restoration of the\u0000crystalline point group symmetry in the angle-dependent torque and the\u0000coexisting magnon excitations and spinon-continuum in the inelastic neutron\u0000scattering spectrum, provide strong evidence that this disordered phase is a\u0000field induced quantum spin liquid with partially polarized spins. Our\u0000variational Monte Carlo simulation with the effective\u0000K-J1-{Gamma}-{Gamma}'-J3 model reproduces the experimental data and further\u0000supports this conclusion.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"112 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142180399","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

Inter-Layer Correlation of Loop Current Charge Density Wave on the Bilayer Kagomé Lattice 双层卡戈梅晶格上环流电荷密度波的层间相关性

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.08139

Jin-Wei Dong, Yu-Han Lin, Ruiqing Fu, Gang Su, Ziqiang Wang, Sen Zhou

{"title":"Inter-Layer Correlation of Loop Current Charge Density Wave on the Bilayer Kagomé Lattice","authors":"Jin-Wei Dong, Yu-Han Lin, Ruiqing Fu, Gang Su, Ziqiang Wang, Sen Zhou","doi":"arxiv-2409.08139","DOIUrl":"https://doi.org/arxiv-2409.08139","url":null,"abstract":"Loop current order has been suggested as a promising candidate for the\u0000spontaneous time-reversal symmetry breaking $2a_0 times 2a_0$ charge density\u0000wave (CDW) revealed in vanadium-based kagom'e metals avs ($A$ = K, Rb, Cs)\u0000near van Hove filling $n_text{vH} = 5/12$. Weak-coupling analyses and mean\u0000field calculations have demonstrated that nearest-neighbor Coulomb repulsion\u0000$V_1$ and next-nearest-neighbor Coulomb repulsion $V_2$ drives, respectively,\u0000real and imaginary bond-ordered CDW, with the latter corresponding to\u0000time-reversal symmetry breaking loop current CDW. It is important to understand\u0000the inter-layer correlation of these bond-ordered CDWs and its consequences in\u0000the bulk kagom'e materials. To provide physical insights, we investigate in\u0000this paper the $c$-axis stacking of them, loop current CDW in particular, on\u0000the minimal bilayer kagom'e lattice. The bare susceptibilities for stacking of\u0000real and imaginary bond orders are calculated for the free electrons on the\u0000bilayer kagom'e lattice with inter-layer coupling $t_perp=0.2t$, which splits\u0000the van Hove filling to $n_{+text{vH}}=4.64/12$ and $n_{-text{vH}}=5.44/12$.\u0000While real and imaginary bond-ordered CDWs are still favored, respectively, by\u0000$V_1$ and $V_2$, their inter-layer coupling is sensitive to band filling $n$.\u0000They tend to stack symmetrically near $n_{pmtext{vH}}$ with identical bond\u0000orders in the two layers and give rise to a $2a_0 times 2a_0 times 1c_0$ CDW.\u0000On the other hand, they prefer to stack antisymmetrically around $n_text{vH}$\u0000with opposite bond orders in the two layers and lead to a $2a_0 times 2a_0\u0000times 2c_0$ CDW. The concrete bilayer $t$-$t_perp$-$V_1$-V$_2$ model is then\u0000studied. We obtain the mean-field ground states and determine the inter-layer\u0000coupling as a function of band filling at various interactions. The nontrivial\u0000topological properties of loop current CDWs are studied ...","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142180395","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

Braided Ising spin-tube physics in a purported kagome magnet 据称是神户磁铁中的编织伊辛自旋管物理学

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.07807

J. Nagl, D. Flavián, B. Duncan, S. Hayashida, O. Zaharko, E. Ressouche, J. Ollivier, Z. Yan, S. Gvasaliya, A. Zheludev

引用次数: 0

Optical signatures of interlayer electron coherence in a bilayer semiconductor 双层半导体中层间电子相干的光学特征

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.08329

Xiaoling Liu, Nadine Leisgang, Pavel E. Dolgirev, Alexander A. Zibrov, Jiho Sung, Jue Wang, Takashi Taniguchi, Kenji Watanabe, Valentin Walther, Hongkun Park, Eugene Demler, Philip Kim, Mikhail D. Lukin

{"title":"Optical signatures of interlayer electron coherence in a bilayer semiconductor","authors":"Xiaoling Liu, Nadine Leisgang, Pavel E. Dolgirev, Alexander A. Zibrov, Jiho Sung, Jue Wang, Takashi Taniguchi, Kenji Watanabe, Valentin Walther, Hongkun Park, Eugene Demler, Philip Kim, Mikhail D. Lukin","doi":"arxiv-2409.08329","DOIUrl":"https://doi.org/arxiv-2409.08329","url":null,"abstract":"Emergent strongly-correlated electronic phenomena in atomically-thin\u0000transition metal dichalcogenides are an exciting frontier in condensed matter\u0000physics, with examples ranging from bilayer\u0000superconductivity~cite{zhao2023evidence} and electronic Wigner\u0000crystals~cite{smolenski2021signatures,zhou2021bilayer} to the ongoing quest\u0000for exciton condensation~cite{wang2019evidence,ma2021strongly,shi2022bilayer}.\u0000Here, we experimentally investigate the properties of indirect excitons in\u0000naturally-grown MoS$_2$-homobilayer, integrated in a dual-gate device structure\u0000allowing independent control of the electron density and out-of-plane electric\u0000field. Under conditions when electron tunneling between the layers is\u0000negligible~cite{pisoni2019absence}, upon electron doping the sample, we\u0000observe that the two excitons with opposing dipoles hybridize, displaying\u0000unusual behavior distinct from both conventional level crossing and\u0000anti-crossing. We show that these observations can be explained by static\u0000random coupling between the excitons, which increases with electron density and\u0000decreases with temperature. We argue that this phenomenon is indicative of a\u0000spatially fluctuating order parameter in the form of interlayer electron\u0000coherence, a theoretically predicted many-body state~cite{zheng1997exchange}\u0000that has yet to be unambiguously established experimentally outside of the\u0000quantum Hall\u0000regime~cite{sarma2008perspectives,spielman2000resonantly,kellogg2004vanishing,kellogg2002observation,spielman2001observation,fertig1989energy,shi2022bilayer}.\u0000Implications of our findings for future experiments and quantum optics\u0000applications are discussed.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142261801","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

Unconventional two-dimensional quantum oscillations in three-dimensional thick SrRuO$_3$ films 三维厚 SrRuO$_3$ 薄膜中的非常规二维量子振荡

arXiv - PHYS - Strongly Correlated Electrons Pub Date : 2024-09-12 DOI: arxiv-2409.07835

Yuta Matsuki, Shinichi Nishihaya, Markus Kriener, Ren Oshima, Fumiya Miwa, Masaki Uchida

{"title":"Unconventional two-dimensional quantum oscillations in three-dimensional thick SrRuO$_3$ films","authors":"Yuta Matsuki, Shinichi Nishihaya, Markus Kriener, Ren Oshima, Fumiya Miwa, Masaki Uchida","doi":"arxiv-2409.07835","DOIUrl":"https://doi.org/arxiv-2409.07835","url":null,"abstract":"SrRuO$_3$ is a prototypical transition metal oxide which hosts rich physical\u0000properties including itinerant ferromagnetism, high conductivity, and intrinsic\u0000Hall effect originating in the Weyl points. Recently, high-quality SrRuO$_3$\u0000films with residual resistivity ratios of more than 50 have been reported to\u0000exhibit quantum oscillations at low temperatures in spite of its strong\u0000electron correlation. While the origin of the oscillations has been discussed\u0000in relation to Weyl orbits based on the Weyl semimetal band structure, so far\u0000experimentally reported results are neither consistent with each other nor with\u0000theoretically expected behavior, leaving the origin of the oscillations in\u0000SrRuO$_3$ films still elusive. In this report, we have carefully evaluated the\u0000quantum oscillations observed in three-dimensional thick SrRuO$_3$ films with a\u0000high residual resistivity ratio of RRR = 82. We reveal the coexistence of two\u0000oscillation components both derived from two-dimensional electronic states and\u0000with slightly different masses, suggesting the involvement of the surface Fermi\u0000arc states formed between different Weyl point pairs.","PeriodicalId":501171,"journal":{"name":"arXiv - PHYS - Strongly Correlated Electrons","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142180400","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