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Magnetic Control of the Kinetic Inductance in Elements of Superconducting Electronics
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024604391
A. A. Neilo, S. V. Bakurskiy, N. V. Klenov, I. I. Soloviev, M. Yu. Kupriyanov
{"title":"Magnetic Control of the Kinetic Inductance in Elements of Superconducting Electronics","authors":"A. A. Neilo,&nbsp;S. V. Bakurskiy,&nbsp;N. V. Klenov,&nbsp;I. I. Soloviev,&nbsp;M. Yu. Kupriyanov","doi":"10.1134/S0021364024604391","DOIUrl":"10.1134/S0021364024604391","url":null,"abstract":"<p>The longitudinal electron transport in a multilayer superconducting structure SF<sub>1</sub>S<sub>1</sub>F<sub>2</sub>sN, where S is a superconductor, F is a ferromagnet, s is a thin superconducting layer, and N is a normal metal, has been theoretically studied. Calculations have shown that the rotation of the magnetization of ferromagnetic layers relative to each other makes it possible to smoothly change the kinetic inductance of the structure by several times. A feature of the electronic state of the structure in the region of system parameters corresponding to its transition from a state with the 0 stable Josephson phase to a state with the π stable phase (0–π transition) has been discovered. This feature leads to the decrease in the singlet component of the pairing amplitude and to an increase in the kinetic inductance of the entire structure. The study of the effect of the finite longitudinal current on the charge transport has shown that the destruction of superconductivity in different layers occurs step-by-step, and the dependence of the kinetic inductance <i>L</i><sub>k</sub> on the total transport current <i>J</i> exhibits several plateaus with an almost constant inductance.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"58 - 66"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024604391.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465966","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
Study of Stability and Structural and Magnetic Ordering in (Cr1 − xFex)3C2 Magnetic MXene
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024603841
A. S. Shinkorenko, V. S. Zhandun, N. G. Zamkova
{"title":"Study of Stability and Structural and Magnetic Ordering in (Cr1 − xFex)3C2 Magnetic MXene","authors":"A. S. Shinkorenko,&nbsp;V. S. Zhandun,&nbsp;N. G. Zamkova","doi":"10.1134/S0021364024603841","DOIUrl":"10.1134/S0021364024603841","url":null,"abstract":"<p>The thermodynamic stability and the magnetic and electronic properties of a new two-dimensional magnetic compound (Cr<sub>1 −</sub> <sub><i>x</i></sub>Fe<sub><i>x</i></sub>)<sub>3</sub>C<sub>2</sub> belonging to the MXen family have been analyzed using ab initio calculations and the cluster approximation. The most stable structure and magnetic configuration of (Cr<sub>1 −</sub> <sub><i>x</i></sub>Fe<sub><i>x</i></sub>)<sub>3</sub>C<sub>2</sub> have been proposed taking into account the functionalization of the surface with fluorine and oxygen. For the first time, a stable and promising ferrimagnetic MXene (Cr<sub>1/3</sub>Fe<sub>2/3</sub>)<sub>3</sub>C<sub>2</sub> with a high magnetic moment per cell has been discovered, both in the pure form and with the fluorine-functionalized surface.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"41 - 46"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0021364024603841.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465919","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
Generation of Elliptically Polarized Harmonics by Gas Media in Two-Color Laser Fields under Quasi-Phase Matching Conditions
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S002136402460469X
S. Yu. Stremoukhov
{"title":"Generation of Elliptically Polarized Harmonics by Gas Media in Two-Color Laser Fields under Quasi-Phase Matching Conditions","authors":"S. Yu. Stremoukhov","doi":"10.1134/S002136402460469X","DOIUrl":"10.1134/S002136402460469X","url":null,"abstract":"<p>The effect of the parameters of a medium, which is formed by a set of gas jets, on the generation of elliptically polarized harmonics during nonlinear optical interaction with two-color femtosecond laser fields has been studied. The calculations have been performed for a laser field formed by linearly polarized first and second harmonics of a Cr:forsterite laser with the polarization of the field components making an angle of π/4. The generation of elliptically polarized harmonics by single Ar atoms in such fields has been demonstrated with a nonperturbative theoretical approach. Using the interference model, the efficiency and polarization properties of the generated harmonics under both phase and quasi-phase matching conditions have been calculated. The possibility of quasi-phase amplification of elliptically polarized harmonics has been demonstrated.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"16 - 21"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465856","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
Features of the Nonlinear Vibrational Response of Dielectric Media at Two-Wave Mixing
IF 1.4 4区 物理与天体物理
JETP Letters Pub Date : 2025-02-21 DOI: 10.1134/S0021364024604305
M. S. Guselnikov
{"title":"Features of the Nonlinear Vibrational Response of Dielectric Media at Two-Wave Mixing","authors":"M. S. Guselnikov","doi":"10.1134/S0021364024604305","DOIUrl":"10.1134/S0021364024604305","url":null,"abstract":"<p>A relation between the vibrational nonlinear refractive index coefficient <span>({{n}_{2}}(omega ))</span> and the vibrational cubic susceptibility <span>({{chi }^{{(3)}}}(omega ';omega ',omega , - omega ))</span> has been analytically derived involving well-known optical, spectral, and thermal matter parameters. This relation allows one to estimate the nonlinear phase shift of low-power probe radiation at the frequency <span>(omega ')</span>, which propagates in the field of a high-power terahertz pump wave at the frequency <span>(omega )</span>. Theoretical estimates of the nonlinear susceptibility <span>({{chi }^{{(3)}}}(omega ';omega ',omega , - omega ))</span> for water and fused silica for terahertz Kerr effect measurements have been obtained in good agreement with experimental data.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"121 1","pages":"28 - 34"},"PeriodicalIF":1.4,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465920","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
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
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