Physical Review B最新文献

Out-of-plane Edelstein effects: Electric field induced magnetization in p -wave magnets

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-14 DOI: 10.1103/physrevb.111.l161301

Motohiko Ezawa

{"title":"Out-of-plane Edelstein effects: Electric field induced magnetization in p -wave magnets","authors":"Motohiko Ezawa","doi":"10.1103/physrevb.111.l161301","DOIUrl":"https://doi.org/10.1103/physrevb.111.l161301","url":null,"abstract":"In-plane magnetization is induced by the Edelstein effect in a Rashba spin-orbit interaction system. However, out-of-plane magnetization is more useful for switching a ferromagnetic memory. We study analytically and numerically electric field induced magnetization in p</a:mi></a:math>-wave magnets with the aid of the Rashba interaction based on a simple two-band model. The out-of-plane magnetization is induced when the Néel vector of the <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\"><b:mi>p</b:mi></b:math>-wave magnet is along the <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\"><c:mi>z</c:mi></c:math> direction. We also show that no magnetization is induced in the absence of the Rashba interaction. The electric field induced magnetization will be useful for future switching technologies of ferromagnetic memories based on the <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\"><d:mi>p</d:mi></d:math>-wave magnet. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"34 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Temperature-controlled strong magnon coupling in the van der Waals antiferromagnet CrCl3

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-14 DOI: 10.1103/physrevb.111.134420

Yitong Sun, Lijun Yan, Jianshu Xue, Yue Zhao, Yufeng Tian, Shishen Yan, Jinwei Rao, Lihui Bai

{"title":"Temperature-controlled strong magnon coupling in the van der Waals antiferromagnet CrCl3","authors":"Yitong Sun, Lijun Yan, Jianshu Xue, Yue Zhao, Yufeng Tian, Shishen Yan, Jinwei Rao, Lihui Bai","doi":"10.1103/physrevb.111.134420","DOIUrl":"https://doi.org/10.1103/physrevb.111.134420","url":null,"abstract":"In van der Waals antiferromagnets, both magnetization and interlayer interactions are temperature dependent, and their combined effects significantly impact magnon dispersion. However, these effects remain largely unexplored. Here, we report the distinct temperature dependencies of the optical and acoustic magnon modes in a CrCl</a:mi>3</a:mn></a:msub></a:math> sample. We find that, below the <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\"><b:mrow><b:mi mathvariant=\"normal\">N</b:mi><b:mover accent=\"true\"><b:mi mathvariant=\"normal\">e</b:mi><b:mo>́</b:mo></b:mover><b:mi>el</b:mi></b:mrow></b:math> temperature, the optical mode softens with increasing temperature, while the acoustic mode remains insensitive to temperature variations, both experimentally and theoretically. We attribute this phenomenon to the opposing contributions of the easy-plane anisotropic field and the interlayer exchange interaction field on these two magnon modes. These factors jointly cause the softening of the optical mode but compensate each other in the acoustic mode. By leveraging the opposite temperature dependencies of two magnon modes, we achieve strong coupling between them through adjusting temperature. The coupling strength between these two modes increases linearly with the external magnetic field and remains insensitive to temperature variations. Our research provides new insights into the temperature-controlled magnon dynamics in van der Waals antiferromagnets and may advance the study of magnetization in two-dimensional materials and heterostructures. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"74 5 Pt 1 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

On-chip quantum confinement refrigeration overcoming electron-phonon heat leaks

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-14 DOI: 10.1103/physrevb.111.l161404

S. Autti, J. R. Prance, M. Prunnila

{"title":"On-chip quantum confinement refrigeration overcoming electron-phonon heat leaks","authors":"S. Autti, J. R. Prance, M. Prunnila","doi":"10.1103/physrevb.111.l161404","DOIUrl":"https://doi.org/10.1103/physrevb.111.l161404","url":null,"abstract":"Circuit-based quantum devices rely on keeping electrons at millikelvin temperatures. Improved coherence and sensitivity as well as discovering new physical phenomena motivate pursuing ever lower electron temperatures, accessible using on-chip cooling techniques. Here we show that a two-dimensional electron gas (2DEG), with the sub-band populations manipulated using gate voltages, works as an on-chip cooler only limited by a fundamental phonon heat leak. The 2DEG can, for example, be realized in a silicon-based double-gate complementary metal oxide semiconductor (CMOS) transistor. A single-shot 2DEG cooler can reduce the electron temperature by a factor of 2 with a hold time up to a second, achieved by expanding the electron gas into an additional sub-band. Integrating an array of such coolers—using, e.g., CMOS fabrication techniques—to obtain continuous cooldown may allow reaching down to microkelvin device temperatures. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"66 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143827440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

How quantum selection rules influence the magneto-optical effects of driven ultrafast magnetization dynamics 量子选择规则如何影响驱动型超快磁化动力学的磁光效应

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-11 DOI: 10.1103/physrevb.111.144410

Mohamed F. Elhanoty, Olle Eriksson, Chin Shen Ong, Oscar Grånäs

{"title":"How quantum selection rules influence the magneto-optical effects of driven ultrafast magnetization dynamics","authors":"Mohamed F. Elhanoty, Olle Eriksson, Chin Shen Ong, Oscar Grånäs","doi":"10.1103/physrevb.111.144410","DOIUrl":"https://doi.org/10.1103/physrevb.111.144410","url":null,"abstract":"Ultrafast magnetization dynamics driven by ultrashort pump lasers is typically explained by changes in the electronic populations and scattering pathways of excited conduction electrons. This conventional approach overlooks the fundamental role of quantum mechanical selection rules, governing transitions from the core states to the conduction band, that form the key method of the probing step in these experiments. By employing fully time-dependent density functional theory, we reveal that these selection rules profoundly influence the interpretation of ultrafast spin dynamics at specific probe energies. Our analysis for hcp Co and fcc Ni at the M</a:mi></a:math> edge demonstrates that the transient dynamics, as revealed in pump-probe experiments, arises from a complex interplay of optical excitations of the <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\"><b:mi>M</b:mi></b:math> shell. Taking into account the selection rules and conduction electron spin flips leads to highly energy-dependent dynamics. These findings address long-standing discrepancies in experimental transverse magneto-optical Kerr effect measurements and show that only through meticulous consideration of the matrix elements at the probe stage, can one ensure that the magnetization dynamics is revealed in its true nature, instead of being muddled by artifacts arising from the choice of probe energy. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"33 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 invariants of vortices, merons, skyrmions, and their combinations in continuous and discrete systems

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-11 DOI: 10.1103/physrevb.111.134417

Filipp N. Rybakov, Olle Eriksson, Nikolai S. Kiselev

引用次数: 0

Evidence for reduced periodic lattice distortion within the Sb-terminated surface layer of the kagome metal CsV3Sb5

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-09 DOI: 10.1103/physrevb.111.l140101

Felix Kurtz, Gevin von Witte, Lukas Jehn, Alp Akbiyik, Igor Vinograd, Matthieu Le Tacon, Amir A. Haghighirad, Dong Chen, Chandra Shekhar, Claudia Felser, Claus Ropers

{"title":"Evidence for reduced periodic lattice distortion within the Sb-terminated surface layer of the kagome metal CsV3Sb5","authors":"Felix Kurtz, Gevin von Witte, Lukas Jehn, Alp Akbiyik, Igor Vinograd, Matthieu Le Tacon, Amir A. Haghighirad, Dong Chen, Chandra Shekhar, Claudia Felser, Claus Ropers","doi":"10.1103/physrevb.111.l140101","DOIUrl":"https://doi.org/10.1103/physrevb.111.l140101","url":null,"abstract":"The discovery of the kagome metal CsV</a:mi></a:mrow>3</a:mn></a:msub>Sb</a:mi></a:mrow>5</a:mn></a:msub></a:math> sparked broad interest, due to the coexistence of a charge density wave (CDW) phase and possible unconventional superconductivity in the material. In this Letter, we use low-energy electron diffraction (LEED) with a <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\"><b:mi>µ</b:mi><b:mi mathvariant=\"normal\">m</b:mi></b:math>-sized electron beam to explore the periodic lattice distortion at the antimony-terminated surface in the CDW phase. We recorded high-quality backscattering diffraction patterns in ultrahigh vacuum from multiple cleaved samples. Unexpectedly, we did not find superstructure reflexes at intensity levels predicted from dynamical LEED calculations for the reported <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\"><d:mrow><d:mn>2</d:mn><d:mo>×</d:mo><d:mn>2</d:mn><d:mo>×</d:mo><d:mn>2</d:mn></d:mrow></d:math> bulk structure. Our results suggest that in <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\"><e:msub><e:mrow><e:mi>CsV</e:mi></e:mrow><e:mn>3</e:mn></e:msub><e:msub><e:mrow><e:mi>Sb</e:mi></e:mrow><e:mn>5</e:mn></e:msub></e:math> the periodic lattice distortion accompanying the CDW is less pronounced at Sb-terminated surfaces than in the bulk. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"39 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Antichiral surface states and Su-Schrieffer-Heeger physics in rutile altermagnets

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-09 DOI: 10.1103/physrevb.111.l161109

Sopheak Sorn

{"title":"Antichiral surface states and Su-Schrieffer-Heeger physics in rutile altermagnets","authors":"Sopheak Sorn","doi":"10.1103/physrevb.111.l161109","DOIUrl":"https://doi.org/10.1103/physrevb.111.l161109","url":null,"abstract":"We study surface states and domain wall bound states in altermagnets using a rutile-lattice tight-binding model of electrons coupled to a Néel order. We discover that two symmetry-protected Weyl nodal lines in the bulk band structure can give rise to unconventional antichiral surface states—surface states from opposite surfaces propagate in a manner, as opposed to the antiparallel manner for the more conventional chiral surface states. We also find that the antichiral surface states can be turned into chiral surface states upon changing the surface termination. The origin of the surface states, the dependence on the surface termination, and key features of domain wall bound states are explained using a map from the altermagnet to a family of a modified Su-Schrieffer-Heeger chain and the associated bulk-boundary correspondence. Our work reveals rutile altermagnets as a promising candidate among very few quantum materials that can support antichiral surface states. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"39 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Fragile spin liquid in three dimensions

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-09 DOI: 10.1103/physrevb.111.134413

Anna Fancelli, R. Flores-Calderón, Owen Benton, Bella Lake, Roderich Moessner, Johannes Reuther

{"title":"Fragile spin liquid in three dimensions","authors":"Anna Fancelli, R. Flores-Calderón, Owen Benton, Bella Lake, Roderich Moessner, Johannes Reuther","doi":"10.1103/physrevb.111.134413","DOIUrl":"https://doi.org/10.1103/physrevb.111.134413","url":null,"abstract":"Motivated by the recent appearance of the trillium lattice in the search for materials hosting spin liquids, we study the ground state of the classical Heisenberg model on its line graph, the trilline lattice. We find that this network realizes the recently proposed notion of a fragile spin liquid in three dimensions. Additionally, we analyze the Ising case and argue for a possible Z</a:mi>2</a:mn></a:msub></a:math> quantum spin liquid phase in the corresponding quantum dimer model. Like the well-known <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\"><c:mrow><c:mi>U</c:mi><c:mo>(</c:mo><c:mn>1</c:mn><c:mo>)</c:mo></c:mrow></c:math> spin liquids, the classical phase hosts moment fractionalization evidenced by the diluted lattice, but unlike those, it exhibits exponential decay in both spin correlations and interactions between fractionalized moments. This provides an instance of a purely short-range correlated classical Heisenberg spin liquid in three dimensions. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"91 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143813469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Translation symmetry restoration under random unitary dynamics

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-08 DOI: 10.1103/physrevb.111.l140304

Katja Klobas, Colin Rylands, Bruno Bertini

{"title":"Translation symmetry restoration under random unitary dynamics","authors":"Katja Klobas, Colin Rylands, Bruno Bertini","doi":"10.1103/physrevb.111.l140304","DOIUrl":"https://doi.org/10.1103/physrevb.111.l140304","url":null,"abstract":"The finite parts of a large, locally interacting many-body system prepared out of equilibrium eventually equilibrate. Characterizing the underlying mechanisms of this process and its timescales, however, is particularly hard as it requires one to decouple universal features from observable-specific ones. Recently, additional insight was gained by studying how certain symmetries of the dynamics that are broken by the initial state are restored at the level of the reduced state of a given subsystem. This provides a high-level, observable-independent probe. Until now, this idea has been applied to the restoration of internal symmetries, e.g., U(1) symmetries related to charge conservation. Here we show that the same logic can be applied to the restoration of space-time symmetries, and hence can be used to characterize the relaxation of fully generic systems. We illustrate this idea by considering the paradigmatic example of “generic” many-body dynamics, i.e., a local random unitary circuit, where our method leads to exact results. We show that the restoration of translation symmetry in these systems only happens on timescales that are proportional to the subsystem's volume. In fact, for large enough subsystems, the time of symmetry restoration becomes initial-state independent (as long as the latter breaks the symmetry at time zero) and coincides with the thermalization time. For intermediate subsystems, however, one can observe the “quantum Mpemba effect,” where the state of the system restores a symmetry faster if it is initially more asymmetric. We provide an exact characterization of this effect in a nonintegrable system. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"49 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143805565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Enhanced quantum sensitivity and coherence of symmetric magnetic clusters 增强对称磁簇的量子灵敏度和相干性

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-04-04 DOI: 10.1103/physrevb.111.134406

Lorenzo Amato, Manuel Grimm, Markus Müller

{"title":"Enhanced quantum sensitivity and coherence of symmetric magnetic clusters","authors":"Lorenzo Amato, Manuel Grimm, Markus Müller","doi":"10.1103/physrevb.111.134406","DOIUrl":"https://doi.org/10.1103/physrevb.111.134406","url":null,"abstract":"Searching for highly coherent degrees of freedom in noisy solid-state environments is a major challenge in condensed matter. In disordered dipolar systems, such as magnetically doped insulators, compact clusters of two-level systems (TLS) have recently been shown to have significantly longer coherence times than typical single TLS. Coupling weakly to their environment, they sense and probe its many-body dynamics through the induced dephasing. However, it has remained an open question whether further mechanisms exist that protect the coherence of such solid-state qubits. Here, we show that symmetric clusters of a few TLS couple even more weakly to their surroundings, making them highly sensitive quantum sensors of slow many-body dynamics. Furthermore, we explore their use as qubits for quantum information storage, detailing the techniques required for their preparation and manipulation. Our findings elucidate the role of symmetry in enhancing quantum coherence in disordered and noisy systems, opening a route toward a sensitive experimental probe of many-body quasilocalization dynamics as well as the development of quantum technologies in solid-state systems. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"90 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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