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We predict that electron-doped silicene is a good two-dimensional electron-phonon superconductor under biaxial tensile strain by first-principles calculations within rigid band approximation. Superconductivity transition temperature of…

Superconductivity · Physics 2013-11-27 Wenhui Wan , Yanfeng Ge , Fan Yang , Yugui Yao

The electronic structure, lattice dynamics, and electron-phonon coupling (EPC) of the newly discovered (Ba,K)SbO$_3$ superconductors are investigated by first-principles calculations. The EPC of (Ba,K)SbO$_3$ is significantly enhanced by…

Superconductivity · Physics 2022-02-09 Zhihong Yuan , Pengyu Zheng , Yiran Peng , Rui Liu , Xiaobo Ma , Guangwei Wang , Tianye Yu , Zhiping Yin

Multifunctional properties in quantum systems require the interaction between different degrees of freedom. As such, spin-phonon coupling emerges as an ideal mechanism to tune multiferroicity, magnetism, and magnetoelectric response. In…

Using the weak-localization method, we have measured the electron-phonon scattering times $\tau_{ep}$ in Pd$_{60}$Ag$_{40}$ thick films prepared by DC- and RF-sputtering deposition techniques. In both series of samples, we find an anomalous…

Disordered Systems and Neural Networks · Physics 2009-05-05 Y. L. Zhong , J. J. Lin , L. Y. Kao

In the realm of ferroelectric memories, HfO2-based ferroelectrics stand out because of their exceptional CMOS compatibility and scalability. Nevertheless, their switchable polarization and switching speed are not on par with those of…

We show that the superconducting transition temperature Tc of FeSe1-xTex can be computed to reasonable values in a modified McMillan approach in which the electron-phonon coupling is amplified by the antiferromagnetism and the out-of-plane…

Superconductivity · Physics 2019-07-01 C. H. Wong , R. Lortz

Linear response methods are applied to identify the increase in electron-phonon coupling in elemental yttrium that is responsible for its high superconducting critical temperature Tc, which reaches nearly 20 K at 115 GPa. While the…

Superconductivity · Physics 2007-05-23 Z. P. Yin , S. Y. Savrasov , W. E. Pickett

The effect of epitaxial strain on the phonon spectra, crystal structure, spontaneous polarization, dielectric, piezoelectric, and elastic properties of (001)-oriented ferroelectric (BaTiO$_3$)$_m$/(SrTiO$_3$)$_n$ superlattices ($m = n =…

Materials Science · Physics 2016-07-11 Alexander I. Lebedev

We present a systematical study on the roles of electron correlation and spin-orbit coupling in the isovalent Pd-doped superconductor SrPt$_3$P. By using solid state reaction method, we fabricated the strong spin-orbit coupling…

Electron-phonon coupling (EPC) governs lattice dynamics, charge transport, and collective electronic phases in quantum materials. In several families of unconventional superconductors, including transition-metal dichalcogenides and kagome…

Nonlinear phononics play important role in strong laser-solid interactions. We discuss nonlinear dynamical protocols which allow for efficient excitation and control of nonlinear phonons. We consider recent inspiring proposals: inducing…

Other Condensed Matter · Physics 2018-05-16 A. P. Itin , M. I. Katsnelson

In the present work we demonstrate that C-doped Zr$_{5}$Pt$_{3}$ is an electron-phonon superconductor (with critical temperature T$_\mathrm{C}$ = 3.7\,K) with a nonsymmorphic topological Dirac nodal-line semimetal state, which we report…

Superconductivity · Physics 2023-06-07 A Bhattacharyya , P P Ferreira , K Panda , F B Santos , D T Adroja , K Yokoyama , T T Dorini , L T F Eleno , A J S Machado

The coupling between localized spins and phonons can lead to shifts in the dielectric constant of insulating materials at magnetic ordering transitions. Studies on isostructural SeCuO3 (ferromagnetic) and TeCuO3 (antiferromagnetic)…

Materials Science · Physics 2009-04-14 G. Lawes , T. Kimura , C. M. Varma , M. A. Subramanian , R. J. Cava , A. P. Ramirez

Monolayer FeSe/TiO$_x$ and FeSe/FeO$_x$ interfaces exhibit significant superconductivity enhancement compared to bulk FeSe, with interfacial electron-phonon coupling (EPC) playing a crucial role. However, the reduced dimensionality in…

Electric-field control of spin-dependent properties has become one of the most attractive phenomena in modern materials research due the promise of new device functionalities. One of the paradigms in this approach is to electrically toggle…

Materials Science · Physics 2015-06-19 Xiaohui Liu , J. D. Burton , Evgeny Y. Tsymbal

We report neutron inelastic scattering experiments on single crystal PbMg$_{1/3}$Nb$_{2/3}$O$_{3}$ doped with 32\% PbTiO$_{3}$, a relaxor ferroelectric that lies close to the morphotropic phase boundary. When cooled under an electric field…

Materials Science · Physics 2016-01-06 John A. Schneeloch , Zhijun Xu , B. Winn , C. Stock , P. M. Gehring , R. J. Birgeneau , Guangyong Xu

Spin- and charge-lattice interactions are potential key factors in the microscopic mechanism of high-temperature superconductivity in cuprates. Although both interactions can dramatically shape the low-energy electronic structure, their…

High-transition-temperature (high-Tc) superconductivity develops near antiferromagnetic phases, and it is possible that magnetic excitations contribute to the superconducting pairing mechanism. To assess the role of antiferromagnetism, it…

Superconductivity · Physics 2007-05-23 E. M. Motoyama , G. Yu , I. M. Vishik , O. P. Vajk , P. K. Mang , M. Greven

Interaction between electrons and phonons in solids is a key effect defining physical properties of materials such as electrical and thermal conductivity. In transitional metal dichalcogenides (TMDCs) the electron-phonon coupling results in…

We report $ab~initio$ calculations of the electronic and vibrational properties in CuPb$_9$(PO$_4$)$_6$O, including the electron-phonon coupling strength via strong-coupling Migdal-Eliashberg theory. We verify the presence of appealing flat…

Superconductivity · Physics 2024-01-19 Hari Paudyal , Michael E. Flatté , Durga Paudyal
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