Nature Physics最新文献_第10页

Magmatic intrusions in real time 实时岩浆侵入

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02950-5

Lishu Wu

引用次数: 0

Earth’s position in the Universe 地球在宇宙中的位置

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02915-8

Karine Le Bail

引用次数: 0

Women scientists through the ages 历代的女科学家

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02933-6

Nina Meinzer

引用次数: 0

Take protons for a ride 带上质子兜风

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02949-y

Stefanie Reichert

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A geometric incompatibility by any other name 几何不相容的另一个名称

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02951-4

David Abergel

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Quasicrystal stability and nucleation kinetics from density functional theory 准晶稳定性和成核动力学的密度泛函理论

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02925-6

Woohyeon Baek, Sambit Das, Shibo Tan, Vikram Gavini, Wenhao Sun

{"title":"Quasicrystal stability and nucleation kinetics from density functional theory","authors":"Woohyeon Baek, Sambit Das, Shibo Tan, Vikram Gavini, Wenhao Sun","doi":"10.1038/s41567-025-02925-6","DOIUrl":"10.1038/s41567-025-02925-6","url":null,"abstract":"The aperiodic order of quasicrystals bridges the amorphous and crystalline regime, so it has remained unclear whether quasicrystals are metastable or stable phases of matter. Density functional theory is often used to evaluate thermodynamic stability, but quasicrystals are long-range aperiodic and their energies cannot be calculated using conventional ab initio methods. Here, we perform first-principles calculations on quasicrystal nanoparticles of increasing size, from which we can directly extrapolate their bulk and surface energies. Using this technique, we determine with high confidence that the icosahedral quasicrystals ScZn7.33 and YbCd5.7 are ground-state phases, thus revealing that translational symmetry is not a necessary condition for the zero-temperature stability of inorganic solids. Although we found the ScZn7.33 quasicrystal to be thermodynamically stable, we show on a mixed thermodynamic and kinetic phase diagram that its solidification from the melt is limited by nucleation, which illustrates why even stable materials may be kinetically challenging to grow. Our techniques broadly open the door to first-principles investigations into the structure–bonding–stability relationships of aperiodic materials. Traditionally, density functional theory could not describe quasicrystals as they lack translational symmetry. An ab initio approach now establishes that the quasicrystalline structures of ScZn7.33 and YbCd5.7 are true ground states.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 6","pages":"980-987"},"PeriodicalIF":18.4,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144278564","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

Triple jump forward 三级跳

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-13 DOI: 10.1038/s41567-025-02958-x

引用次数: 0

Science diplomacy is in trouble 科学外交陷入困境

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-12 DOI: 10.1038/s41567-025-02911-y

V. M. Castaño, G. Violini

引用次数: 0

Ultrasensitive single-ion electrometry in a magnetic field gradient 磁场梯度下的超灵敏单离子电测法

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-11 DOI: 10.1038/s41567-025-02887-9

F. Bonus, C. Knapp, C. H. Valahu, M. Mironiuc, S. Weidt, W. K. Hensinger

{"title":"Ultrasensitive single-ion electrometry in a magnetic field gradient","authors":"F. Bonus, C. Knapp, C. H. Valahu, M. Mironiuc, S. Weidt, W. K. Hensinger","doi":"10.1038/s41567-025-02887-9","DOIUrl":"10.1038/s41567-025-02887-9","url":null,"abstract":"Hyperfine energy levels in trapped ions offer long-lived spin states. In addition, the motion of these charged particles couples strongly to electric field perturbations. These characteristics make trapped ions attractive platforms for the quantum sensing of electric fields. However, the spin states do not exhibit a strong intrinsic coupling to electric fields, lim iting the achievable sensitivity. Here, we amplify the coupling between electric field perturbations and the spin states by using a static magnetic field gradient. Displacements of the trapped ion resulting from the applied electric field perturbations are thereby mapped to an instantaneous change in the energy-level splitting of the internal spin states. This gradient-mediated coupling of the electric field to the spin enables the use of well-established magnetometry protocols for electrometry, making it possible to achieve extremely sensitive measurements of d.c. and a.c. electric fields. We also employ a rotating-frame relaxometry technique and demonstrate the use of our quantum sensor as an electric field noise spectrum analyser. Finally, we describe a set of hardware modifications that are capable of achieving a further improvement in sensitivity by up to six orders of magnitude. Trapped ions are promising for electrometry but limited by their weak intrinsic spin coupling to electric fields. Now it is shown that using a magnetic field gradient enhances sensitivity and enables precise measurements across subhertz to kilohertz frequencies.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1189-1195"},"PeriodicalIF":18.4,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.comhttps://www.nature.com/articles/s41567-025-02887-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144260537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spin-selective magneto-conductivity in WSe2 WSe2的自旋选择性磁导率

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-09 DOI: 10.1038/s41567-025-02918-5

En-Min Shih, Qianhui Shi, Daniel Rhodes, Bumho Kim, Kenji Watanabe, Takashi Taniguchi, Kun Yang, James Hone, Cory R. Dean

{"title":"Spin-selective magneto-conductivity in WSe2","authors":"En-Min Shih, Qianhui Shi, Daniel Rhodes, Bumho Kim, Kenji Watanabe, Takashi Taniguchi, Kun Yang, James Hone, Cory R. Dean","doi":"10.1038/s41567-025-02918-5","DOIUrl":"10.1038/s41567-025-02918-5","url":null,"abstract":"Material systems that exhibit tunable spin-selective conductivity are key components of spintronic technologies. Here, we demonstrate a mechanism for spin-selective transport that is based on the unusual Landau-level sequence observed in bilayer WSe2 under large applied magnetic fields. We find that the conductivity depends strongly on the relative ordering between conducting electrons with different spins and valleys in a partially filled Landau level and the localized electrons of lower-energy filled Landau levels. We observe that the conductivity is almost completely suppressed when the spin ratio and field-tuned Coulomb energy exceed a critical threshold. We achieve switching between on and off states through either modulation of the external magnetic or electric fields, with many-body interactions driving a collective switching mechanism. In contrast to magnetoresistive heterostructures, this mechanism achieves electrically tunable spin filtering within a single material, driven by the interaction between free and localized spins residing in energy-separated spin-and-valley-polarized bands. Similar spin-selective conductivity may be realizable in flat-band systems at zero magnetic field. Mechanisms for generating spin-polarized currents may be helpful for applications. Now one such mechanism that uses the unusual Landau-level spectrum of WSe2 under a strong magnetic field is demonstrated.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1231-1236"},"PeriodicalIF":18.4,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144237947","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