发布求助
文献互助 智能选刊 最新文献

JETP Letters最新文献

筛选
英文 中文
Record High Critical Temperature Among Bismuthides of the 122 Family: BaAg1.8Bi2 with a Monoclinically Distorted CaBe2Ge2 Structure
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024604597
A. V. Sadakov, A. S. Usoltsev, V. A. Vlasenko, S. Yu. Gavrilkin, A. I. Shilov, K. S. Pervakov, E. O. Rakhmanov, I. V. Morozov
{"title":"Record High Critical Temperature Among Bismuthides of the 122 Family: BaAg1.8Bi2 with a Monoclinically Distorted CaBe2Ge2 Structure","authors":"A. V. Sadakov,&nbsp;A. S. Usoltsev,&nbsp;V. A. Vlasenko,&nbsp;S. Yu. Gavrilkin,&nbsp;A. I. Shilov,&nbsp;K. S. Pervakov,&nbsp;E. O. Rakhmanov,&nbsp;I. V. Morozov","doi":"10.1134/S0021364024604597","DOIUrl":"10.1134/S0021364024604597","url":null,"abstract":"<p>A new superconductor BaAg<sub>1.8</sub>Bi<sub>2</sub> with a previously unknown variant of the monoclinically distorted CaBe<sub>2</sub>Ge<sub>2</sub> structure (space group <i>C</i>2/<i>m</i>) has been crystallized in the form of single crystals from a bismuth flux. The temperature and magnetic field dependences of the magnetic susceptibility and resistance have shown that this compound transits to a superconducting state at the temperature <i>T</i><sub>c</sub> = 5.4 K. According to the found Ginzburg–Landau parameter κ = 27, this compound is a type-II superconductor with the first and second critical fields <i>H</i><sub>c1</sub>(0) = 53 Oe and <i>H</i><sub>c2</sub>(0) = 2.1 × 10<sup>4</sup> Oe and the critical current density reaching 4.4 kA/cm<sup>2</sup> at 2.5 K. It can be assumed that, similar to some superconducting 112 type bismuthides, superconductivity in this compound is due to the planar square bismuth sublattice contained in the fluorite-like [BiAg<sub>0.8</sub>] layer rather than to the [AgBi] layers where Ag atoms are locally disordered. This could explain the unusually high <i>T</i><sub>c</sub> value for bismuthides belonging to the CaBe<sub>2</sub>Ge<sub>2</sub> structural type and its derivatives.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"72 - 77"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604597.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Metamorphic InAs/InGaAs Quantum Dot Heterostructures for Single-Photon Generation in the C-Band Spectral Range
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024604743
S. V. Sorokin, G. V. Klimko, I. V. Sedova, O. E. Lakuntsova, A. I. Galimov, Yu. M. Serov, A. I. Veretennikov, L. A. Snigirev, A. A. Toropov
{"title":"Metamorphic InAs/InGaAs Quantum Dot Heterostructures for Single-Photon Generation in the C-Band Spectral Range","authors":"S. V. Sorokin,&nbsp;G. V. Klimko,&nbsp;I. V. Sedova,&nbsp;O. E. Lakuntsova,&nbsp;A. I. Galimov,&nbsp;Yu. M. Serov,&nbsp;A. I. Veretennikov,&nbsp;L. A. Snigirev,&nbsp;A. A. Toropov","doi":"10.1134/S0021364024604743","DOIUrl":"10.1134/S0021364024604743","url":null,"abstract":"<p>Heterostructures with InAs/InGaAs quantum dots and In<sub><i>x</i></sub>Ga<sub>1–<i>x</i></sub>As/GaAs(001) metamorphic buffer layers are grown by molecular-beam epitaxy. The structures are designed to obtain single-photon emission in the telecommunication C-band wavelength range. The possibility of reducing the thickness of the In<sub><i>x</i></sub>Ga<sub>1–<i>x</i></sub>As graded layer in order to form efficient microcavity structures with a cavity length as small as two wavelengths is examined. The structures with metamorphic buffer layers grown on top of an Al<sub>0.9</sub>Ga<sub>0.1</sub>As/GaAs distributed Bragg reflector are grown and characterized by cross-sectional transmission electron microscopy and photoluminescence spectroscopy.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"35 - 40"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604743.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Ultraviolet Cathodoluminescence of Ion-Induced Defects in Hexagonal Boron Nitride
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024603531
O. A. Gogina, Yu. V. Petrov, O. F. Vyvenko, S. Kovalchuk, K. Bolotin
{"title":"Ultraviolet Cathodoluminescence of Ion-Induced Defects in Hexagonal Boron Nitride","authors":"O. A. Gogina,&nbsp;Yu. V. Petrov,&nbsp;O. F. Vyvenko,&nbsp;S. Kovalchuk,&nbsp;K. Bolotin","doi":"10.1134/S0021364024603531","DOIUrl":"10.1134/S0021364024603531","url":null,"abstract":"<p>Hexagonal boron nitride is distinguished among solid-state materials with luminescent properties as a material to create single-photon sources efficiently emitting at room temperature. In this work, it is demonstrated that helium ion irradiation with fluences of (1–5) × 10<sup>14</sup> ion/cm<sup>2</sup> increases the ultraviolet radiation intensity with a maximum at a wavelength of 320 nm due to the formation of new luminescent centers. The subsequent electron irradiation further increases the intensity of 320 nm luminescence apparently due to the formation of carbon-containing defects in the volume of <i>h</i>BN through recombination-enhanced migration. On the contrary, the intense helium ion irradiation stimulates the formation of nonradiative recombination centers, which reduce the lifetime of nonequilibrium charge carriers.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"1 - 7"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024603531.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Magneto-Electric Spin Resonance of 63Cu2+ Dimer Associates in a BaF2 Single Crystal
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024604214
R. B. Zaripov, V. F. Tarasov, V. A. Ulanov
{"title":"Magneto-Electric Spin Resonance of 63Cu2+ Dimer Associates in a BaF2 Single Crystal","authors":"R. B. Zaripov,&nbsp;V. F. Tarasov,&nbsp;V. A. Ulanov","doi":"10.1134/S0021364024604214","DOIUrl":"10.1134/S0021364024604214","url":null,"abstract":"<p>Unusual resonance lines have been observed for a dimer associate of impurity <sup>63</sup>Cu<sup>2+</sup> ions in a BaF<sub>2</sub> single crystal in continuous-wave electron paramagnetic resonance spectra recorded using a dielectric resonator. The phase of these lines is orthogonal to the phase of magnetic field modulation. The appearance of such lines is attributed to the features of the spin dynamics of high-spin electron systems resonantly interacting with a microwave electromagnetic field. The magnetic dipole moment of the spin system is transformed into the electric quadrupole moment under the sufficiently intense resonant excitation of magnetic dipole transitions. In this case, the interaction of the magnetic dipole and electric quadrupole oscillators occurs in the spin system. The simultaneous excitation of magnetic dipole and electric quadrupole resonant transitions in the dielectric resonator of a spectrometer leads to the appearance of phase-shifted resonance lines.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"47 - 52"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Nonlinear Optical Properties of Ge7Se93 Chalcogenide Glass as a Low-Melting Immersion Medium for Femtosecond Laser Marking of Diamonds in the Near-Infrared Range
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024604652
P. P. Pakholchuk, N. A. Smirnov, N. I. Busleev, D. A. Pomazkin, V. G. Vins, S. I. Kudryashov, V. S. Shiryaev
{"title":"Nonlinear Optical Properties of Ge7Se93 Chalcogenide Glass as a Low-Melting Immersion Medium for Femtosecond Laser Marking of Diamonds in the Near-Infrared Range","authors":"P. P. Pakholchuk,&nbsp;N. A. Smirnov,&nbsp;N. I. Busleev,&nbsp;D. A. Pomazkin,&nbsp;V. G. Vins,&nbsp;S. I. Kudryashov,&nbsp;V. S. Shiryaev","doi":"10.1134/S0021364024604652","DOIUrl":"10.1134/S0021364024604652","url":null,"abstract":"<p>The possibility of the femtosecond laser structural micromodification (microlabeling) of diamond through a solid immersion layer made of Ge<sub>7</sub>Se<sub>93</sub> chalcogenide glass at a wavelength of 1.55 μm has been investigated. The two-photon absorption coefficient of Ge<sub>7</sub>Se<sub>93</sub> has been measured to be β<sub>2</sub> = (0.09 ± 0.01) cm/GW, which allows the propagation of intense femtosecond laser radiation in this spectral range through realistically thin (&lt;0.1–1 mm) immersion layers. Despite the nonlinear absorption and optical damage in the immersion volume, photoluminescent microlabels have been observed in the test writing modes in the volume of diamond, which become more uniform with decreasing exposure time and pulse energy.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"22 - 27"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604652.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143466035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Spectral Properties of Three-Dimensional Waveguide Structures Fabricated by Two-Photon Laser Lithography
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-14 DOI: 10.1134/S0021364024604469
A. I. Maydykovskiy, A. S. Androsov, D. O. Apostolov, K. A. Smirnov, I. O. Batuev, T. V. Murzina
{"title":"Spectral Properties of Three-Dimensional Waveguide Structures Fabricated by Two-Photon Laser Lithography","authors":"A. I. Maydykovskiy,&nbsp;A. S. Androsov,&nbsp;D. O. Apostolov,&nbsp;K. A. Smirnov,&nbsp;I. O. Batuev,&nbsp;T. V. Murzina","doi":"10.1134/S0021364024604469","DOIUrl":"10.1134/S0021364024604469","url":null,"abstract":"<p>The development of the two-photon laser lithography technique for the fabrication of optical elements with characteristic dimensions of a few microns is an important goal. Here, two-photon laser lithography is used to produce micro-optical waveguides from OrmoComp® hybrid photoresist. The waveguides are optically isolated from a substrate and are connected to total internal reflection prism adapters for coupling optical radiation in and out of them. The transmission spectra of the entire input adapter–waveguide–output adapter structure are calculated and measured and it is shown that the transmission coefficient in the few-mode regime is 20–40% in the spectral range of 700–1650 nm. According to calculations, the main mechanism of losses in such a structure is determined by strong scattering in the region of joint between the conical part of the adapter and the waveguide caused by the complex structure of the optical field, as well as by the violation of the total internal reflection regime in the prisms due to the large angular aperture of the focused radiation beam. It is shown that the Goos–Hänchen effect has to be taken into account in the design of the coupling elements.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"120 12","pages":"886 - 890"},"PeriodicalIF":1.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604469.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Method for Measuring the Deviation from Lambert’s Cosine Law in the Diffuse Reflection of Ultracold Neutrons from Material Walls
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-14 DOI: 10.1134/S0021364024603981
P. D. Grigoriev, V. D. Kochev, V. A. Tsyplukhin, A. M. Dyugaev, I. Ya. Polishchuk
{"title":"Method for Measuring the Deviation from Lambert’s Cosine Law in the Diffuse Reflection of Ultracold Neutrons from Material Walls","authors":"P. D. Grigoriev,&nbsp;V. D. Kochev,&nbsp;V. A. Tsyplukhin,&nbsp;A. M. Dyugaev,&nbsp;I. Ya. Polishchuk","doi":"10.1134/S0021364024603981","DOIUrl":"10.1134/S0021364024603981","url":null,"abstract":"<p>The simulation of the motion of ultracold neutrons is important for estimating their losses, accurately measuring their lifetimes, and describing other experiments. In material traps, it is necessary to take into account not only the specular reflection, but also the diffuse elastic reflection of ultracold neutrons from the walls of a trap. The angular distribution of diffusely reflected neutrons is usually described by Lambert’s cosine law, which does not have a strict theoretical justification and is often violated. In this work, an experiment has been proposed to measure the deviation of the angular distribution of diffusely reflected ultracold neutrons from Lambert’s cosine law. This deviation can be determined by the difference in the number of neutrons leaving a long, narrow trap for ultracold neutrons through its central and end windows. The performed Monte Carlo calculations corresponding to the proposed experiment have shown a significant effect for different shapes of the trap.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"120 12","pages":"873 - 878"},"PeriodicalIF":1.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Superconducting Order Parameter of the RbCa2Fe4As4F2 Compound
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-14 DOI: 10.1134/S0021364024604445
A. S. Usoltsev, A. T. Daniyarkhodzhaev, A. A. Gippius, A. V. Sadakov
{"title":"Superconducting Order Parameter of the RbCa2Fe4As4F2 Compound","authors":"A. S. Usoltsev,&nbsp;A. T. Daniyarkhodzhaev,&nbsp;A. A. Gippius,&nbsp;A. V. Sadakov","doi":"10.1134/S0021364024604445","DOIUrl":"10.1134/S0021364024604445","url":null,"abstract":"<p>The superconducting order parameter of the RbCa<sub>2</sub>Fe<sub>4</sub>As<sub>4</sub>F<sub>2</sub> compound belonging to the new 12442 family of iron-based superconductors with a critical temperature of <i>T</i><sub>c</sub> ~ 32 K has been studied. Two superconducting condensates with the order parameters Δ<sub>L</sub> ~ 6.3 meV and Δ<sub>S</sub> ~ 2.8 meV have been detected for the first time by multiple Andreev reflection spectroscopy. The temperature dependence of the superconducting critical current density <i>J</i><sub>c</sub>(<i>T</i>) in the intrinsic field has been measured. The approximation of the dependence <i>J</i><sub>c</sub>(<i>T</i>) demonstrates the correspondence of the experimental data to the double-gap model with the <i>s</i>-wave order parameter and the gaps of Δ<sub>L</sub> ~ 6 meV and Δ<sub>S</sub> ~ 2 meV. The superconducting order parameters obtained by two different methods are in good agreement with each other.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"120 12","pages":"923 - 931"},"PeriodicalIF":1.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604445.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Multilevel Relaxation Model for Describing Magnetization Curves of Nanoparticles
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-14 DOI: 10.1134/S0021364024604196
A. V. Lobachev, M. A. Chuev
{"title":"Multilevel Relaxation Model for Describing Magnetization Curves of Nanoparticles","authors":"A. V. Lobachev,&nbsp;M. A. Chuev","doi":"10.1134/S0021364024604196","DOIUrl":"10.1134/S0021364024604196","url":null,"abstract":"<p>A theory has been developed to describe the magnetization curves of an ensemble of single-domain particles. This theory includes their temperature-induced excitations and is in fact a generalization of the two-level Stoner–Wohlfarth model and its relaxation version, as well as a multilevel relaxation model for describing Mössbauer spectra. A basically new aspect of this theory is the solution of a system of differential equations for nonequilibrium populations of stochastic states. The resultant model includes the physical mechanisms for the formation of magnetization curves of nanoparticles in real situations and describes self-consistently the qualitative features of the transformation of these curves under the variation of the temperature and the strength and direction of an external field.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"120 12","pages":"910 - 915"},"PeriodicalIF":1.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604196.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Control of Spin-Wave Bragg Resonances by the Spin Current in a Magnonic Crystal with Platinum Strips
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-14 DOI: 10.1134/S002136402460455X
M. A. Morozova, O. V. Matveev, N. D. Lobanov, D. V. Romanenko, A. M. Mednikov, S. A. Gusev, N. S. Gusev, S. A. Nikitov
{"title":"Control of Spin-Wave Bragg Resonances by the Spin Current in a Magnonic Crystal with Platinum Strips","authors":"M. A. Morozova,&nbsp;O. V. Matveev,&nbsp;N. D. Lobanov,&nbsp;D. V. Romanenko,&nbsp;A. M. Mednikov,&nbsp;S. A. Gusev,&nbsp;N. S. Gusev,&nbsp;S. A. Nikitov","doi":"10.1134/S002136402460455X","DOIUrl":"10.1134/S002136402460455X","url":null,"abstract":"<p>The electric and magnetic frequency rearrangement of a Bragg resonance in the spectrum of spin waves in a magnonic crystal in the form of 100-nm-thick yttrium iron garnet film with attached 10-nm-thick platinum strips is reported. The effect of the spin current on the position of the Bragg band gap depends on the polarity of the voltage applied to the platinum strips. The positive voltage does not affect the band gap position, while the applied negative voltage lowers the band gap by about of 5 MHz. At frequencies outside the band gap, depending on the polarity of the voltage applied to platinum, either the enhancement or suppression of the spin wave is observed.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"120 12","pages":"916 - 922"},"PeriodicalIF":1.4,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信