Nature Physics最新文献_第7页

Ultrafast Pockels laser 超快口袋激光器

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-14 DOI: 10.1038/s41567-025-02978-7

Lishu Wu

引用次数: 0

Spatial sound decomposer 空间声音分解器

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-14 DOI: 10.1038/s41567-025-02979-6

Bart Verberck

引用次数: 0

Too late to be careless 来不及再大意了

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-14 DOI: 10.1038/s41567-025-02967-w

Mark Buchanan

引用次数: 0

Measurement of phonon angular momentum 声子角动量的测量

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-11 DOI: 10.1038/s41567-025-02952-3

H. Zhang, N. Peshcherenko, Fazhi Yang, T. Z. Ward, P. Raghuvanshi, L. Lindsay, Claudia Felser, Yang Zhang, J.-Q. Yan, H. Miao

{"title":"Measurement of phonon angular momentum","authors":"H. Zhang, N. Peshcherenko, Fazhi Yang, T. Z. Ward, P. Raghuvanshi, L. Lindsay, Claudia Felser, Yang Zhang, J.-Q. Yan, H. Miao","doi":"10.1038/s41567-025-02952-3","DOIUrl":"10.1038/s41567-025-02952-3","url":null,"abstract":"In condensed matter, angular momentum is intimately related to the emergence of topological quantum states, including chiral superconductivity, quantum spin liquids and various chiral quasiparticles. Recently, it has been predicted that microscopic lattice excitations, known as phonons, can carry finite angular momentum, leading to specific physical properties of materials. However, phonon angular momentum has not yet been observed directly. Here we demonstrate that angular momentum conservation results in a macroscopic mechanical torque when applying a time-reversal symmetry-breaking thermal gradient along the chiral axis of single-crystal tellurium. We probe this torque using a cantilever-based device and establish that it changes sign by flipping the chirality or thermal gradient. This behavior disappears in polycrystalline samples that lack a preferred chirality. Our experimental results align well with theoretical calculations. We provide compelling evidence for phonon angular momentum, which might enable quantum states with potential applications in microelectronics. Theory predicts that phonons—quanta of lattice vibrations—can carry finite angular momentum and thus influence physical properties of materials. Now phonons with angular momentum have been seen in tellurium with a chiral crystal structure.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 9","pages":"1387-1391"},"PeriodicalIF":18.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Topological excitonic insulator with tunable momentum order 具有可调动量阶的拓扑激子绝缘子

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-11 DOI: 10.1038/s41567-025-02917-6

Md Shafayat Hossain, Zi-Jia Cheng, Yu-Xiao Jiang, Tyler A. Cochran, Song-Bo Zhang, Huangyu Wu, Xiaoxiong Liu, Xiquan Zheng, Guangming Cheng, Byunghoon Kim, Qi Zhang, Maksim Litskevich, Junyi Zhang, Jinjin Liu, Jia-Xin Yin, Xian P. Yang, Jonathan D. Denlinger, Massimo Tallarida, Ji Dai, Elio Vescovo, Anil Rajapitamahuni, Nan Yao, Anna Keselman, Yingying Peng, Yugui Yao, Zhiwei Wang, Luis Balicas, Titus Neupert, M. Zahid Hasan

{"title":"Topological excitonic insulator with tunable momentum order","authors":"Md Shafayat Hossain, Zi-Jia Cheng, Yu-Xiao Jiang, Tyler A. Cochran, Song-Bo Zhang, Huangyu Wu, Xiaoxiong Liu, Xiquan Zheng, Guangming Cheng, Byunghoon Kim, Qi Zhang, Maksim Litskevich, Junyi Zhang, Jinjin Liu, Jia-Xin Yin, Xian P. Yang, Jonathan D. Denlinger, Massimo Tallarida, Ji Dai, Elio Vescovo, Anil Rajapitamahuni, Nan Yao, Anna Keselman, Yingying Peng, Yugui Yao, Zhiwei Wang, Luis Balicas, Titus Neupert, M. Zahid Hasan","doi":"10.1038/s41567-025-02917-6","DOIUrl":"10.1038/s41567-025-02917-6","url":null,"abstract":"Correlated topological materials often maintain a delicate balance among physical symmetries. Many topological orders are symmetry protected, whereas most correlated phenomena arise from spontaneous symmetry breaking. Cases where symmetry breaking induces a non-trivial topological phase are rare. Here we demonstrate the presence of two such phases in Ta2Pd3Te5, where Coulomb interactions form excitons that condense below 100 K, one with zero and the other with finite momentum. We observed a full spectral bulk gap, which stems from exciton condensation. This topological excitonic insulator state spontaneously breaks mirror symmetries but involves a weak structural coupling. Scanning tunnelling microscopy shows gapless boundary modes in the bulk insulating phase. Their magnetic field response, together with theoretical modelling, indicates a topological origin. These observations establish Ta2Pd3Te5 as a topological excitonic insulator in a three-dimensional crystal. Thus, our results manifest a unique sequence of topological exciton condensations in a bulk crystal, offering exciting opportunities to study critical behaviour and excitations. Experimental systems in which non-trivial topology is driven by spontaneous symmetry breaking are rare. Now, topological gaps resulting from two excitonic condensates have been demonstrated in a three-dimensional material.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1250-1259"},"PeriodicalIF":18.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144603009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intertwined orders in a quantum material 量子材料中相互交织的顺序

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-11 DOI: 10.1038/s41567-025-02942-5

Giacomo Mazza

引用次数: 0

First-principles diagrammatic Monte Carlo for electron–phonon interactions and polaron 电子-声子相互作用和极化子的第一原理图解蒙特卡罗

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-10 DOI: 10.1038/s41567-025-02954-1

Yao Luo, Jinsoo Park, Marco Bernardi

{"title":"First-principles diagrammatic Monte Carlo for electron–phonon interactions and polaron","authors":"Yao Luo, Jinsoo Park, Marco Bernardi","doi":"10.1038/s41567-025-02954-1","DOIUrl":"10.1038/s41567-025-02954-1","url":null,"abstract":"In condensed matter, phonons—quanta of the lattice vibration field—couple with electrons, leading to the formation of entangled electron–phonon states called polarons. In the intermediate- and strong-coupling regimes common to many conventional and quantum materials, a many-body treatment of polarons requires adding up a large number of electron–phonon Feynman diagrams. In this regard, diagrammatic Monte Carlo is an efficient method for diagram summation and has been used to study polarons within simplified electron–phonon models. Here we develop diagrammatic Monte Carlo calculations based on accurate first-principles electron–phonon interactions, enabling numerically exact results for the ground-state and dynamical properties of polarons in real materials. We implement these calculations in LiF, SrTiO3, and rutile and anatase TiO2, and describe both localized and delocalized polarons. Our work enables the precise modeling of electron–phonon interactions and polarons in coupling regimes ranging from weak to strong. The results will provide deeper insights into transport phenomena, linear response and superconductivity within the strong electron–phonon coupling regime. Diagrammatic Monte Carlo calculations accurately describe polarons in different theoretical models. Now, integrating this with accurate first-principles calculations can describe the ground-state and dynamic properties of polarons in real materials.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1275-1282"},"PeriodicalIF":18.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144593846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ytterbium dopants for quantum simulation 量子模拟用镱掺杂剂

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-09 DOI: 10.1038/s41567-025-02948-z

Diana Serrano

引用次数: 0

Quantum thermalization and Floquet engineering in a spin ensemble with a clock transition 具有时钟跃迁的自旋系综中的量子热化和Floquet工程

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-09 DOI: 10.1038/s41567-025-02943-4

Mi Lei, Rikuto Fukumori, Chun-Ju Wu, Edwin Barnes, Sophia E. Economou, Joonhee Choi, Andrei Faraon

{"title":"Quantum thermalization and Floquet engineering in a spin ensemble with a clock transition","authors":"Mi Lei, Rikuto Fukumori, Chun-Ju Wu, Edwin Barnes, Sophia E. Economou, Joonhee Choi, Andrei Faraon","doi":"10.1038/s41567-025-02943-4","DOIUrl":"10.1038/s41567-025-02943-4","url":null,"abstract":"Platforms that enable the study and control of quantum many-body interactions are fundamentally important in quantum science and related emerging technologies. Optically addressable solid-state spins offer scalability to a large Hilbert space but suffer from large on-site disorder and undesired couplings to the environment. Here we investigated a strongly interacting ensemble of millions of optically addressable ytterbium-171 ions in a crystal. This platform features a clock transition that is first-order insensitive to magnetic fluctuations, thus exhibiting superior coherence and small disorder. Notably, the clock transition also gives rise to pure spin-exchange interactions, realizing the dipolar XY model, which is difficult to access in other solid-state spin systems. We exploited this feature to investigate quantum thermalization by varying the relative ratio of interaction strength to disorder, dynamically engineering the XY model into other many-body Hamiltonian models and realizing a time-crystalline phase of matter through periodic driving. Our results demonstrated that an ensemble of rare earth ions serves as a versatile test bed for many-body physics and developing quantum technologies. Using Floquet engineering, an ensemble of ytterbium-171 ions in an yttrium orthovanadate host crystal provides a platform for studying the dynamics of different quantum many-body models, including the realization of a time-crystalline phase.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1196-1202"},"PeriodicalIF":18.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

QED tests in strong fields QED在强场中的测试

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-09 DOI: 10.1038/s41567-025-02959-w

Jacinda S. M. Ginges

引用次数: 0