Physical Review B最新文献_第4页

Transverse voltage in anisotropic hydrodynamic conductors

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-06 DOI: 10.1103/physrevb.111.l081402

Kaize Wang, Chunyu Guo, Philip J. W. Moll, Tobias Holder

{"title":"Transverse voltage in anisotropic hydrodynamic conductors","authors":"Kaize Wang, Chunyu Guo, Philip J. W. Moll, Tobias Holder","doi":"10.1103/physrevb.111.l081402","DOIUrl":"https://doi.org/10.1103/physrevb.111.l081402","url":null,"abstract":"Weak momentum dissipation in ultraclean metals gives rise to novel non-Ohmic current flow, including ballistic and hydrodynamic regimes. Recently, hydrodynamic flow has attracted intense interest because it presents a valuable window into the electronic correlations and the longest lived collective modes of quantum materials. However, diagnosing viscous flow is difficult as the macroscopic observables of ballistic and hydrodynamic transport such as the average current distribution can be deceptively similar, even if their respective microscopics deviate notably. Based on kinetic Boltzmann theory, here we propose to address this issue via the transverse channel voltage at zero magnetic field, which can efficiently detect hydrodynamic flow in a number of materials. To this end, we show that the transverse voltage is sensitive to the interplay between anisotropic fermiology and boundary scattering, resulting in a nontrivial behavior in narrow channels along crystalline low-symmetry directions. We discuss several materials where the channel-size dependent stress of the quantum fluid leads to a characteristic sign change of the transverse voltage as a new hallmark of the crossover from the ballistic to the hydrodynamic regime. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"79 2 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258158","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

Kohn-Sham-Proca equations for ultrafast exciton dynamics

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-06 DOI: 10.1103/physrevb.111.l060302

J. K. Dewhurst, D. Gill, S. Shallcross, S. Sharma

{"title":"Kohn-Sham-Proca equations for ultrafast exciton dynamics","authors":"J. K. Dewhurst, D. Gill, S. Shallcross, S. Sharma","doi":"10.1103/physrevb.111.l060302","DOIUrl":"https://doi.org/10.1103/physrevb.111.l060302","url":null,"abstract":"A longstanding problem in time-dependent density functional theory has been the absence of a functional able to capture excitonic physics under laser pump conditions. Here we introduce a scheme of coupled Kohn-Sham and Proca equations in a pump-probe setup that we show (i) produces linear-response excitonic effects in the weak pump regime in excellent agreement with experiment, but also (ii) captures excitonic physics in the highly nonlinear regime of ultrafast strong laser pumping. In particular ”bleaching” (i.e., reduction) of the excitonic weight and the appearance of excitonic side bands is demonstrated. The approach is a procedural functional—the Kohn-Sham and Proca equations are simultaneously time propagated—allowing the straightforward inclusion of, for example, lattice and spin degrees of freedom into excitonic physics. The functional is shown to have universal applicability to a wide range of materials, and we also establish a relation between the parameters used in the functional and the exciton Bohr radii of the materials. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"164 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191796","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

Adiabatic transformations in dissipative and non-Hermitian phase transitions

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-06 DOI: 10.1103/physrevb.111.l081105

Pavel Orlov, Georgy V. Shlyapnikov, Denis V. Kurlov

引用次数: 0

Impact of time-retarded noise on dynamical decoupling schemes for qubits

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-05 DOI: 10.1103/physrevb.111.064503

Kiyoto Nakamura, Joachim Ankerhold

{"title":"Impact of time-retarded noise on dynamical decoupling schemes for qubits","authors":"Kiyoto Nakamura, Joachim Ankerhold","doi":"10.1103/physrevb.111.064503","DOIUrl":"https://doi.org/10.1103/physrevb.111.064503","url":null,"abstract":"One of the simplest and least resource-intensive methods to suppress decoherence for qubit operations, namely, dynamical decoupling (DD), is investigated for a broad range of realistic noise sources with time-retarded feedback. By way of example, the Carr-Purcell-Meiboom-Gill sequence is analyzed in a numerically rigorous manner accounting also for correlations between qubits and environments. Since experimentally noise sources are characterized through spectral densities, we adopt the spin-boson model as a suitable framework to describe the qubit dynamics under DD for a given spectral density J</a:mi>(</a:mo>ω</a:mi>)</a:mo></a:mrow>∝</a:mo>ω</a:mi>s</a:mi></a:msup></a:mrow></a:math>. Motivated by the situation for superconducting qubits, the spectral exponent <b:math xmlns:b=\"http://www.w3.org/1998/Math/MathML\"><b:mi>s</b:mi></b:math> is varied from <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\"><c:mrow><c:mi>s</c:mi><c:mo>=</c:mo><c:mn>1</c:mn></c:mrow></c:math> (Ohmic bath) to a substantially small value <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\"><d:mrow><d:mn>0</d:mn><d:mo><</d:mo><d:mi>s</d:mi><d:mo>≪</d:mo><d:mn>1</d:mn></d:mrow></d:math> (deep sub-Ohmic bath), in order to investigate the impact of time-nonlocal back action on DD performances for enhanced coherence times. As reference to the DD schemes, dynamics of a single qubit subject to Ramsey sequences without any pules and Hahn echo sequences are also investigated. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"8 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124834","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

Full minimal coupling Maxwell-TDDFT: An ab initio framework for light-matter interaction beyond the dipole approximation

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-05 DOI: 10.1103/physrevb.111.085114

Franco P. Bonafé, Esra Ilke Albar, Sebastian T. Ohlmann, Valeriia P. Kosheleva, Carlos M. Bustamante, Francesco Troisi, Angel Rubio, Heiko Appel

{"title":"Full minimal coupling Maxwell-TDDFT: An ab initio framework for light-matter interaction beyond the dipole approximation","authors":"Franco P. Bonafé, Esra Ilke Albar, Sebastian T. Ohlmann, Valeriia P. Kosheleva, Carlos M. Bustamante, Francesco Troisi, Angel Rubio, Heiko Appel","doi":"10.1103/physrevb.111.085114","DOIUrl":"https://doi.org/10.1103/physrevb.111.085114","url":null,"abstract":"We report an , nonrelativistic QED method that couples light and matter self-consistently beyond the electric dipole approximation and without multipolar truncations. This method is based on an extension of the Maxwell-Pauli-Kohn-Sham approach to a full minimal coupling Hamiltonian, where the space- and time-dependent vector potential is coupled to the matter system, and its back reaction to the radiated fields is generated by the full current density. The implementation in the open-source code is designed for massively parallel multiscale simulations considering different grid spacings for the Maxwell and matter subsystems. Here, we show applications of this framework to simulate renormalized Cherenkov radiation of an electronic wave packet, magneto-optical effects with nonchiral light in nonchiral molecular systems, and renormalized plasmonic modes in a nanoplasmonic dimer. We show that in some cases, the beyond-dipole effects cannot be captured by a multipolar expansion Hamiltonian in the length gauge. Finally, we discuss further opportunities enabled by the framework in the field of twisted light and orbital angular momentum, inelastic light scattering, and strong-field physics. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"55 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191797","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

Kohlrausch regime of slow relaxation and its phenomenology in isolated quantum many-body systems with strong disorder 具有强无序性的孤立量子多体系统中缓慢弛豫的 Kohlrausch 机制及其现象学

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-05 DOI: 10.1103/physrevb.111.075113

Asmi Haldar

{"title":"Kohlrausch regime of slow relaxation and its phenomenology in isolated quantum many-body systems with strong disorder","authors":"Asmi Haldar","doi":"10.1103/physrevb.111.075113","DOIUrl":"https://doi.org/10.1103/physrevb.111.075113","url":null,"abstract":"The Kohlrausch(-Williams-Watts) law of stretched exponential relaxation has been observed for over a century and a half in diverse complex classical systems. Here we show that this law describes relaxation quite generically in closed (executing Schrödinger dynamics), interacting disordered many-body systems, using interaction range and disorder strength as primary tuning parameters. This we observe for both time-independent and periodically driven (Floquet) systems. Finite-size analysis indicates the persistence of this nonthermal relaxation regime in the thermodynamic limit thus defining a distinct dynamical regime. This regime exhibits a peak in the time scale of the long-time relaxation (following a transient), upon crossing over from weak to strong disorder. We provide a simple picture of this behavior, which naturally accounts for its generic occurrence. Formation of spin-glass — one of the possible mechanisms for stretched relaxation appears incidental to the occurrence of Kohlrausch law in our context. Finally, we provide a simple non-Hermitian Hamiltonian formulation for the dynamics of a single spin embedded in the disordered chain. This provides an analytical formula that captures not only the Kohlrausch relaxation of the disorder averaged autocorrelation but also captures the largely diverse dynamics of an arbitrary target spin in the system. Our work hence also provides a concrete quantification of the “prethermal slowness” in many-body disordered system. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"9 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143191798","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

Quantum friction near the instability threshold

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-04 DOI: 10.1103/physrevb.111.075403

Daigo Oue, Boris Shapiro, Mário G. Silveirinha

引用次数: 0

Quadratic optical response to a magnetic field in the layered magnet CrSBr

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-04 DOI: 10.1103/physrevb.111.075107

Marie-Christin Heißenbüttel, Pierre-Maurice Piel, Julian Klein, Thorsten Deilmann, Ursula Wurstbauer, Michael Rohlfing

{"title":"Quadratic optical response to a magnetic field in the layered magnet CrSBr","authors":"Marie-Christin Heißenbüttel, Pierre-Maurice Piel, Julian Klein, Thorsten Deilmann, Ursula Wurstbauer, Michael Rohlfing","doi":"10.1103/physrevb.111.075107","DOIUrl":"https://doi.org/10.1103/physrevb.111.075107","url":null,"abstract":"The optical properties of layered materials are dominated by intralayer excitons; especially for layered antiferromagnets the layer-to-layer charge hopping, and therefore interlayer excitons, are spin forbidden. An external magnetic field, however, can continuously drive the magnetic order towards layer-to-layer ferromagnetic, which opens spin-allowed charge-transfer channels between the layers. Here, we elaborate how their admixture changes the composition and nature of the excitons, leading to an extension over many layers, and causing a quadratic redshift with respect to the external magnetic field in CrSBr. We present a minimal four-band model to elucidate the interplay between the various interaction and coupling mechanisms which is able to reproduce the findings of our G</a:mi>W</a:mi></a:mrow></a:math>–Bethe-Salpeter equation calculations as a function of magnetic field. Our model is generally valid for any coupled layers with different spin directions and the insights help to systematically address excitons and to predict their optical signatures in such systems. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"55 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124836","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

Microscopic mechanism of displacive excitation of coherent phonons in a bulk Rashba semiconductor

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-04 DOI: 10.1103/physrevb.111.l081201

P. Fischer, J. Bär, M. Cimander, L. Feuerer, V. Wiechert, O. Tereshchenko, D. Bossini

{"title":"Microscopic mechanism of displacive excitation of coherent phonons in a bulk Rashba semiconductor","authors":"P. Fischer, J. Bär, M. Cimander, L. Feuerer, V. Wiechert, O. Tereshchenko, D. Bossini","doi":"10.1103/physrevb.111.l081201","DOIUrl":"https://doi.org/10.1103/physrevb.111.l081201","url":null,"abstract":"Changing the macroscopic properties of quantum materials by optically activating collective lattice excitations has recently become a major trend in solid state physics. One of the most commonly employed light-matter interaction routes is the displacive mechanism. However, the fundamental contribution to this process remains elusive, as the effects of free-carrier density modification and raised effective electronic temperature have not been disentangled yet. Here we use time-resolved pump-probe spectroscopy to address this issue in the Rashba semiconductor BiTeI. Exploring the conventional regime of electronic interband transitions for different excitation wavelengths as well as the barely accessed regime of electronic intraband transitions, we answer this question regarding the displacive mechanism: the lattice modes are predominantly driven by the rise of the effective electronic temperature. In the intraband regime, which allows an increase of the effective carrier temperature while leaving the carrier density unaffected, the phonon coherence time does not display significant fluence-dependent variations. Our results thus reveal a pathway to displacive excitation of coherent phonons, free from additional scattering and dissipation mechanisms typically associated with an increase of the free-carrier density. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"61 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124590","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

Optical manifestations and bounds of topological Euler class

IF 3.7 2区物理与天体物理

Physical Review B Pub Date : 2025-02-04 DOI: 10.1103/physrevb.111.l081103

Wojciech J. Jankowski, Arthur S. Morris, Adrien Bouhon, F. Nur Ünal, Robert-Jan Slager

{"title":"Optical manifestations and bounds of topological Euler class","authors":"Wojciech J. Jankowski, Arthur S. Morris, Adrien Bouhon, F. Nur Ünal, Robert-Jan Slager","doi":"10.1103/physrevb.111.l081103","DOIUrl":"https://doi.org/10.1103/physrevb.111.l081103","url":null,"abstract":"We analyze quantum-geometric bounds on optical weights in topological phases with pairs of bands hosting nontrivial Euler class, a multigap invariant characterizing non-Abelian band topology. We show how the bounds constrain the combined optical weights of the Euler bands at different dopings and further restrict the size of the adjacent band gaps. In this process, we also consider the associated interband contributions to dc conductivities in the flat-band limit. We physically validate these results by recasting the bound in terms of transition rates associated with the optical absorption of light, and demonstrate how the Euler connections and curvatures can be determined through the use of momentum and frequency-resolved optical measurements, allowing for a direct measurement of this multiband invariant. Additionally, we prove that the bound holds beyond the degenerate limit of Euler bands, resulting in nodal topology captured by the patch Euler class. In this context, we deduce optical manifestations of Euler topology within k</a:mi>·</a:mo>p</a:mi></a:mrow></a:math> models, which include quantized optical conductivity, and third-order jerk photoconductivities. We showcase our findings with numerical validation in lattice-regularized models that benchmark effective theories for real materials and are realizable in metamaterials and optical lattices. Published by the American Physical Society 2025 ","PeriodicalId":20082,"journal":{"name":"Physical Review B","volume":"7 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143124835","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