Nature Physics最新文献_第2页

Observation of Floquet states in graphene 石墨烯中Floquet态的观察

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-06 DOI: 10.1038/s41567-025-02889-7

Marco Merboldt, Michael Schüler, David Schmitt, Jan Philipp Bange, Wiebke Bennecke, Karun Gadge, Klaus Pierz, Hans Werner Schumacher, Davood Momeni, Daniel Steil, Salvatore R. Manmana, Michael A. Sentef, Marcel Reutzel, Stefan Mathias

{"title":"Observation of Floquet states in graphene","authors":"Marco Merboldt, Michael Schüler, David Schmitt, Jan Philipp Bange, Wiebke Bennecke, Karun Gadge, Klaus Pierz, Hans Werner Schumacher, Davood Momeni, Daniel Steil, Salvatore R. Manmana, Michael A. Sentef, Marcel Reutzel, Stefan Mathias","doi":"10.1038/s41567-025-02889-7","DOIUrl":"https://doi.org/10.1038/s41567-025-02889-7","url":null,"abstract":"Floquet engineering—the coherent dressing of matter via time-periodic perturbations—is a mechanism to realize and control emergent phases in materials out of equilibrium. However, its applicability to metallic quantum materials and semimetals such as graphene is an open question. The report of light-induced anomalous Hall effect in graphene remains debated, and a time-resolved photoemission experiment has suggested that Floquet effects might not be realizable in graphene and other semimetals with relatively short decoherence times. Here we provide direct spectroscopic evidence of Floquet effects in graphene through electronic structure measurements. We observe light–matter-dressed Dirac bands by measuring the contribution of Floquet sidebands, Volkov sidebands and their quantum path interference to graphene’s photoemission spectrum. Our results demonstrate that Floquet engineering in graphene is possible, even though ultrafast decoherence processes occur on the timescale of a few tens of femtoseconds. Our approach offers a way to experimentally realize Floquet engineering strategies in metallic and semimetallic systems and for the coherent stabilization of light-induced states with potentially non-trivial topological properties.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"14 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143915433","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

Proof-of-principle demonstration of muon production with an ultrashort high-intensity laser 用超短高强度激光产生介子的原理验证演示

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-06 DOI: 10.1038/s41567-025-02872-2

Feng Zhang, Li Deng, Yanjie Ge, Jiaxing Wen, Bo Cui, Ke Feng, Hao Wang, Chen Wu, Ziwen Pan, Hongjie Liu, Zhigang Deng, Zongxin Zhang, Liangwen Chen, Duo Yan, Lianqiang Shan, Zongqiang Yuan, Chao Tian, Jiayi Qian, Jiacheng Zhu, Yi Xu, Yuhong Yu, Xueheng Zhang, Lei Yang, Weimin Zhou, Yuqiu Gu, Wentao Wang, Yuxin Leng, Zhiyu Sun, Ruxin Li

{"title":"Proof-of-principle demonstration of muon production with an ultrashort high-intensity laser","authors":"Feng Zhang, Li Deng, Yanjie Ge, Jiaxing Wen, Bo Cui, Ke Feng, Hao Wang, Chen Wu, Ziwen Pan, Hongjie Liu, Zhigang Deng, Zongxin Zhang, Liangwen Chen, Duo Yan, Lianqiang Shan, Zongqiang Yuan, Chao Tian, Jiayi Qian, Jiacheng Zhu, Yi Xu, Yuhong Yu, Xueheng Zhang, Lei Yang, Weimin Zhou, Yuqiu Gu, Wentao Wang, Yuxin Leng, Zhiyu Sun, Ruxin Li","doi":"10.1038/s41567-025-02872-2","DOIUrl":"https://doi.org/10.1038/s41567-025-02872-2","url":null,"abstract":"Muons play a crucial role in both fundamental and applied physics. Traditionally, they have been generated from cosmic rays or with proton accelerators. With the advent of ultrashort high-intensity lasers capable of accelerating electrons to gigaelectronvolt energies, muons can also be produced in laser laboratories. Here we report a proof-of-principle experiment of muon production. We accelerated an electron beam to gigaelectronvolt energies with an ultrashort, high-intensity laser pulse and passed the beam through a lead converter target in which muons were generated. We confirmed the muon signal by measuring its lifetime. We investigated the photo-production, electro-production and Bethe–Heitler processes underlying muon generation and their subsequent detection with Geant4 simulations. The results show that the dominant contribution stems from photo-production and electro-production. We estimate that a muon yield of up to 0.01 muon per incoming electron could be achieved in the converter target. This laser-driven muon source features compact, ultrashort pulses and high flux. Moreover, its implementation in a small laser laboratory is relatively straightforward, which dramatically reduces barriers for research in areas such as muonic X-ray elemental analysis or muon spin spectroscopy.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"12 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909780","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

Electron–phonon coupling resolved by phonon mode and electron energy 由声子模式和电子能量解析的电子-声子耦合

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-06 DOI: 10.1038/s41567-025-02863-3

引用次数: 0

Synthetic cells get into shape 合成细胞成形

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-05 DOI: 10.1038/s41567-025-02906-9

Jaime Agudo-Canalejo, Hanumantha Rao Vutukuri

引用次数: 0

Robust and resource-optimal dynamic pattern formation of Min proteins in vivo 强健和资源最优的动态模式形成的Min蛋白在体内

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-05 DOI: 10.1038/s41567-025-02878-w

Ziyuan Ren, Henrik Weyer, Michael Sandler, Laeschkir Würthner, Haochen Fu, Chanin B. Tangtartharakul, Dongyang Li, Cindy Sou, Daniel Villarreal, Judy E. Kim, Erwin Frey, Suckjoon Jun

{"title":"Robust and resource-optimal dynamic pattern formation of Min proteins in vivo","authors":"Ziyuan Ren, Henrik Weyer, Michael Sandler, Laeschkir Würthner, Haochen Fu, Chanin B. Tangtartharakul, Dongyang Li, Cindy Sou, Daniel Villarreal, Judy E. Kim, Erwin Frey, Suckjoon Jun","doi":"10.1038/s41567-025-02878-w","DOIUrl":"https://doi.org/10.1038/s41567-025-02878-w","url":null,"abstract":"The Min protein system prevents abnormal cell division in bacteria by forming oscillatory patterns between cell poles. However, predicting the protein concentrations at which oscillations start and whether cells can maintain them under physiological perturbations remains challenging. Here we show that dynamic pattern formation is robust across a wide range of Min protein levels and variations in the growth physiology using genetically engineered Escherichia coli strains. We modulate the expression of minCD and minE under fast- and slow-growth conditions and build a MinD versus MinE phase diagram that reveals dynamic patterns, including travelling and standing waves. We found that the natural expression level of Min proteins is resource-optimal and robust to changes in protein concentration. In addition, we observed an invariant wavelength of dynamic Min patterns across the phase diagram. We explain the experimental findings quantitatively with biophysical theory based on reaction–diffusion models that consider the switching of MinE between its latent and active states, indicating its essential role as a robustness module for Min oscillation in vivo. Our results underline the potential of integrating quantitative cell physiology and biophysical modelling to understand the fundamental mechanisms controlling cell division machinery, and they offer insights applicable to other biological processes.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"19 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143909750","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

Outside-in regulation of cellular clocks 由外而内调节细胞时钟

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-05 DOI: 10.1038/s41567-025-02882-0

Aneta Koseska, Jae Kyoung Kim

引用次数: 0

Observation of the diffusive Nambu–Goldstone mode of a non-equilibrium phase transition 非平衡相变的扩散性Nambu-Goldstone模式的观察

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-02 DOI: 10.1038/s41567-025-02902-z

Ferdinand Claude, Maxime J. Jacquet, Quentin Glorieux, Michiel Wouters, Elisabeth Giacobino, Iacopo Carusotto, Alberto Bramati

引用次数: 0

Strongly interacting Meissner phases in large bosonic flux ladders 大玻色子通量梯中的强相互作用迈斯纳相

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-02 DOI: 10.1038/s41567-025-02890-0

Alexander Impertro, SeungJung Huh, Simon Karch, Julian F. Wienand, Immanuel Bloch, Monika Aidelsburger

{"title":"Strongly interacting Meissner phases in large bosonic flux ladders","authors":"Alexander Impertro, SeungJung Huh, Simon Karch, Julian F. Wienand, Immanuel Bloch, Monika Aidelsburger","doi":"10.1038/s41567-025-02890-0","DOIUrl":"https://doi.org/10.1038/s41567-025-02890-0","url":null,"abstract":"Periodically driven quantum systems can realize phases of matter that do not appear in time-independent Hamiltonians. One application is the engineering of synthetic gauge fields, which enables the study of topological many-body physics with neutral atom quantum simulators. Here we realize the strongly interacting Mott‚ÄìMeissner phase‚Äîa state combining interaction-induced localization with chiral currents induced by an artificial magnetic field‚Äîin large-scale bosonic flux ladders with 48 sites at half-filling using a neutral atom quantum simulator. By combining quantum gas microscopy with local basis rotations, we reveal the emerging equilibrium particle currents with local resolution across large systems. We find chiral currents exhibiting a characteristic interaction scaling, providing direct experimental evidence of the interacting Mott‚ÄìMeissner phase. Moreover, we benchmark density correlations with numerical simulations and find that the effective temperature of the system is on the order of the tunnel coupling. These results establish the feasibility of scaling periodically driven quantum systems to large, strongly correlated phases, enabling further studies of topological quantum matter with single-atom resolution and control.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"111 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143897843","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

Altermagnet with a metallic touch 有金属触感的交流磁铁

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-02 DOI: 10.1038/s41567-025-02894-w

Rajib Sarkar

引用次数: 0

Microscopic signatures of topology in twisted MoTe2 扭曲MoTe2中拓扑结构的微观特征

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2025-05-01 DOI: 10.1038/s41567-025-02877-x

Ellis Thompson, Keng Tou Chu, Florie Mesple, Xiao-Wei Zhang, Chaowei Hu, Yuzhou Zhao, Heonjoon Park, Jiaqi Cai, Eric Anderson, Kenji Watanabe, Takashi Taniguchi, Jihui Yang, Jiun-Haw Chu, Xiaodong Xu, Ting Cao, Di Xiao, Matthew Yankowitz

{"title":"Microscopic signatures of topology in twisted MoTe2","authors":"Ellis Thompson, Keng Tou Chu, Florie Mesple, Xiao-Wei Zhang, Chaowei Hu, Yuzhou Zhao, Heonjoon Park, Jiaqi Cai, Eric Anderson, Kenji Watanabe, Takashi Taniguchi, Jihui Yang, Jiun-Haw Chu, Xiaodong Xu, Ting Cao, Di Xiao, Matthew Yankowitz","doi":"10.1038/s41567-025-02877-x","DOIUrl":"https://doi.org/10.1038/s41567-025-02877-x","url":null,"abstract":"In moiré materials with flat electronic bands and suitable quantum geometry, strong correlations can give rise to various topological states of matter. The non-trivial band topology of twisted MoTe2, which is responsible for its fractional quantum anomalous Hall states, is predicted to arise from a skyrmion lattice texture in the layer pseudospin of the electronic wavefunctions. Tracing the layer polarization of wavefunctions within the moiré unit cell can, thus, offer insights into the band topology. Here we measure the out-of-plane component of the layer-pseudospin skyrmion textures of twisted MoTe2 using scanning tunnelling microscopy and spectroscopy. We do this by simultaneously visualizing the moiré lattice structure and the spatial localization of its electronic states. We find that the wavefunctions associated with the topological flat bands exhibit a spatially dependent layer polarization within the moiré unit cell, in agreement with our theoretical modelling. Our work enables future local probe studies of the intertwined correlated and topological states arising in gate-tunable devices.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"273 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143893393","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