Condensed Matter最新文献_第9页

The Origin of the Magnetic and Electric Dipole Moments of Ni2+ in NiCr2O4 NiCr2O4中Ni2+的磁、电偶极矩的来源

IF 1.7

Condensed Matter Pub Date : 2023-02-18 DOI: 10.3390/condmat8010023

M. Eremin, K. Vasin

引用次数: 0

Superconducting Diode Effect in Topological Hybrid Structures 拓扑混合结构中的超导二极管效应

IF 1.7

Condensed Matter Pub Date : 2023-02-13 DOI: 10.3390/condmat8020036

T. Karabassov, Emir S. Amirov, I. Bobkova, A. Golubov, E. Kazakova, A. Vasenko

{"title":"Superconducting Diode Effect in Topological Hybrid Structures","authors":"T. Karabassov, Emir S. Amirov, I. Bobkova, A. Golubov, E. Kazakova, A. Vasenko","doi":"10.3390/condmat8020036","DOIUrl":"https://doi.org/10.3390/condmat8020036","url":null,"abstract":"Currently, the superconducting diode effect (SDE) is being actively discussed, due to its large application potential in superconducting electronics. In particular, superconducting hybrid structures, based on three-dimensional (3D) topological insulators, are among the best candidates, due to their having the strongest spin–orbit coupling (SOC). Most theoretical studies on the SDE focus either on a full numerical calculation, which is often rather complicated, or on the phenomenological approach. In the present paper, we compare the linearized and nonlinear microscopic approaches in the superconductor/ferromagnet/3D topological insulator (S/F/TI) hybrid structure. Employing the quasiclassical Green’s function formalism we solve the problem self-consistently. We show that the results obtained by the linearized approximation are not qualitatively different from the nonlinear solution. The main distinction in the results between the two methods was quantitative, i.e., they yielded different supercurrent amplitudes. However, when calculating the so-called diode quality factor the quantitative difference is eliminated and both approaches result in good agreement.","PeriodicalId":10665,"journal":{"name":"Condensed Matter","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42678455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

A Method to Probe the Interfaces in La2−xSrxCuO4-LaSrAlO4-La2−xSrxCuO4 Trilayer Junctions 一种探测La2−xSrxCuO4-LaSrAlO4-La2−xrxCuO4三层结界面的方法

IF 1.7

Condensed Matter Pub Date : 2023-02-10 DOI: 10.3390/condmat8010021

Xiaotao Xu, Xi He, A. Bollinger, Myung‐Geun Han, Yimei Zhu, Xiaoyan Shi, I. Božović

引用次数: 1

Influence of Anharmonic and Frustration Effects on Josephson Phase Qubit Characteristics 非谐波和受挫效应对约瑟夫森相位量子比特特性的影响

IF 1.7

Condensed Matter Pub Date : 2023-02-09 DOI: 10.3390/condmat8010020

I. Askerzade

引用次数: 1

Influence of f Electrons on the Electronic Band Structure of Rare-Earth Nickelates f电子对稀土镍酸盐电子能带结构的影响

IF 1.7

Condensed Matter Pub Date : 2023-02-07 DOI: 10.3390/condmat8010019

A. Ptok, Surajit Basak, P. Piekarz, A. M. Ole's

引用次数: 3

Effect of Transverse Confinement on a Quasi-One-Dimensional Dipolar Bose Gas 横向约束对准一维偶极玻色气体的影响

IF 1.7

Condensed Matter Pub Date : 2023-01-30 DOI: 10.3390/condmat8010026

S. Palo, Edmond Orignac, R. Citro, L. Salasnich

引用次数: 1

Study of Interacting Heisenberg Antiferromagnet Spin-1/2 and 1 Chains Heisenberg反铁磁体自旋1/2和1链相互作用的研究

IF 1.7

Condensed Matter Pub Date : 2023-01-29 DOI: 10.3390/condmat8010017

Debasmita Maiti, Dayasindhu Dey, Manoranjan Kumar

{"title":"Study of Interacting Heisenberg Antiferromagnet Spin-1/2 and 1 Chains","authors":"Debasmita Maiti, Dayasindhu Dey, Manoranjan Kumar","doi":"10.3390/condmat8010017","DOIUrl":"https://doi.org/10.3390/condmat8010017","url":null,"abstract":"Haldane conjectures the fundamental difference in the energy spectrum of the Heisenberg antiferromagnetic (HAF) of the spin S chain is that the half-integer and the integer S chain have gapless and gapped energy spectrums, respectively. The ground state (gs) of the HAF spin-1/2 and spin-1 chains have a quasi-long-range and short-range correlation, respectively. We study the effect of the exchange interaction between an HAF spin-1/2 and an HAF spin-1 chain forming a normal ladder system and its gs properties. The inter-chain exchange interaction J⊥ can be either ferromagnetic (FM) or antiferromagnetic (AFM). Using the density matrix renormalization group method, we show that in the weak AFM/FM coupling limit of J⊥, the system behaves like two decoupled chains. However, in the large AFM J⊥ limit, the whole system can be visualized as weakly coupled spin-1/2 and spin-1 pairs which behave like an effective spin-1/2 HAF chain. In the large FM J⊥ limit, coupled spin-1/2 and spin-1 pairs can form pseudo spin-3/2 and the whole system behaves like an effective spin-3/2 HAF chain. We also derive the effective model Hamiltonian in both strong FM and AFM rung exchange coupling limits.","PeriodicalId":10665,"journal":{"name":"Condensed Matter","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42219057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Q-Balls in the Pseudogap Phase of Superconducting HgBa2CuO4+y HgBa2CuO4+y超导赝隙相中的Q球

IF 1.7

Condensed Matter Pub Date : 2023-01-28 DOI: 10.3390/condmat8010015

G. Campi, L. Barba, Nikolai Zhigadlo, A. Ivanov, A. Menushenkov, A. Bianconi

{"title":"Q-Balls in the Pseudogap Phase of Superconducting HgBa2CuO4+y","authors":"G. Campi, L. Barba, Nikolai Zhigadlo, A. Ivanov, A. Menushenkov, A. Bianconi","doi":"10.3390/condmat8010015","DOIUrl":"https://doi.org/10.3390/condmat8010015","url":null,"abstract":"Fast and local probes, such as X-ray spectroscopy, X-ray diffraction (XRD), and X-ray microscopy, have provided direct evidence for nanoscale phase separation in high temperature perovskite superconductors composed of (i) free particles coexisting with (ii) Jahn Teller polarons (i.e., charges associated with local lattice distortions) not detected by slow experimental methods probing only delocalized states. Moreover, these experimental probes have shown the formation of a superstripes phase in the pseudogap regime below T* in cuprates. Here, we focus on the anomalous temperature dependence of short range X-ray diffraction CDW reflection satellites with high momentum transfer, probing both charge and lattice fluctuations in superconducting HgBa2CuO4+y (Hg1201) in the pseudogap regime below T* and above Tc. We report compelling evidence of the anomalous anticorrelation of the coherence volume with the peak maximum amplitude of the CDW XRD satellite by cooling below T*. This anomalous temperature trend of the short-range striped Jahn Teller polaronic CDW puddles is in agreement with predictions of the Q-ball theory of the quark gluon plasma extended to cuprates, providing compelling evidence for non topological soliton puddles of striped condensate of pairs in the pseudogap phase.","PeriodicalId":10665,"journal":{"name":"Condensed Matter","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47610810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Possible Manifestation of Q-Ball Mechanism of High-Tc Superconductivity in X-ray Diffraction 高温超导Q球机制在X射线衍射中的可能表现

IF 1.7

Condensed Matter Pub Date : 2023-01-28 DOI: 10.3390/condmat8010016

S. Mukhin

{"title":"Possible Manifestation of Q-Ball Mechanism of High-Tc Superconductivity in X-ray Diffraction","authors":"S. Mukhin","doi":"10.3390/condmat8010016","DOIUrl":"https://doi.org/10.3390/condmat8010016","url":null,"abstract":"It is demonstrated, that recently proposed by the author Q-ball mechanism of the pseudogap state and high-Tc superconductivity in cuprates may be detected in micro X-ray diffraction, since it imposes inverse correlations between the size and scattering intensities of the Q-ball charge-density-wave (CDW) fluctuations in these compounds. The Q-ball charge Q gives the number of condensed elementary bosonic excitations in a CDW fluctuation of finite amplitude. The attraction between these excitations inside Euclidean Q-balls is self-consistently triggered by the simultaneous condensation of Cooper/local pairs. Euclidean Q-ball solutions, analogous to the famous Q-balls of squarks in the supersymmetric standard model, arise due to the global invariance of the effective theory under the U(1) phase rotation of the Fourier amplitudes of the short-range CDW fluctuations. A conserved ‘Noether charge’ Q along the Matsubara time axis equals Q∝TM2V, where the temperature T, Q-ball’s volume V, and fluctuation amplitude M enter. Several predictions are derived in an analytic form that follow from this picture. The conservation of the charge Q leads to an inverse proportionality between the volume V and X-ray scattering intensity ∼M2 of the CDW puddles found in micro X-ray scattering experiments. The theoretical temperature dependences of the most probable Q value of superconducting Q-balls and their size and scattering amplitudes fit well the recent X-ray diffraction data in the pseudogap phase of high-Tc cuprates.","PeriodicalId":10665,"journal":{"name":"Condensed Matter","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47622027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Methods to Create Novel La2−xSrxCuO4 Devices with Multiple Atomically Sharp Interfaces 具有多个原子锐接口的新型La2−xSrxCuO4器件的制备方法

IF 1.7

Condensed Matter Pub Date : 2023-01-20 DOI: 10.3390/condmat8010014

A. Bollinger, Xi He, R. Caruso, Xiaotao Xu, Xiaoyan Shi, I. Božović

引用次数: 1