Zobrazeno 1 - 10
of 794
pro vyhledávání: '"Greven, M"'
Autor:
Najev, A., Somun, N., Spaić, M., Khayr, I., Greven, M., Klein, A., Gastiasoro, M. N., Pelc, D.
Metallic strontium titanate (SrTiO$_3$) is known to have both normal-state and superconducting properties that vary strongly over a wide range of charge carrier densities. This indicates the importance of nonlinear dynamics, and has hindered the deve
Externí odkaz:
http://arxiv.org/abs/2406.17558
Autor:
Hameed, S., Wang, Z., Gautreau, D. M., Joe, J., Olson, K. P., Chi, S., Gehring, P. M., Hong, T., Pajerowski, D. M., Williams, T. J., Xu, Z., Matsuda, M., Birol, T., Fernandes, R. M., Greven, M.
Publikováno v:
Phys. Rev. B 108, 134406 (2023)
Neutron scattering is used to study spin waves in the three-dimensional Heisenberg ferromagnet YTiO$_3$, with spin-spin exchange disorder introduced $via$ La-substitution at the Y site. No significant changes are observed in the spin-wave dispersion
Externí odkaz:
http://arxiv.org/abs/2305.04280
Autor:
Griffitt, S., Spaić, M., Joe, J., Anderson, Z., Zhai, D., Krogstad, M. J., Osborn, R., Pelc, D., Greven, M.
The doped perovskite BaBiO$_3$ exhibits a maximum superconducting transition temperature ($T_c$) of 34 K and was the first high-$T_c$ oxide to be discovered, yet pivotal questions regarding the nature of both the metallic and superconducting states r
Externí odkaz:
http://arxiv.org/abs/2209.01361
Autor:
Hameed, S., Joe, J., Thoutam, L. R., Garcia-Barriocanal, J., Yu, B., Yu, G., Chi, S., Hong, T., Williams, T. J., Freeland, J. W., Gehring, P. M., Xu, Z., Matsuda, M., Jalan, B., Greven, M.
Publikováno v:
Phys. Rev. Materials 5, 125003 (2021)
The Mott-insulating rare-earth titanates (RTiO$_3$, R being a rare-earth ion) are an important class of materials that encompasses interesting spin-orbital phases as well as ferromagnet-antiferromagnet and insulator-metal transitions. The growth of t
Externí odkaz:
http://arxiv.org/abs/2106.10253
Autor:
Tabiś, W., Popčević, P., Klebel-Knobloch, B., Biało, I., Kumar, C. M. N., Vignolle, B., Greven, M., Barišić, N.
Despite immense efforts, the cuprate Fermi surface (FS) has been unambiguously determined in only two distinct, low-temperature regions of the phase diagram: a large hole-like FS at high doping, and a small electron-like pocket associated with charge
Externí odkaz:
http://arxiv.org/abs/2106.07457
Publikováno v:
Phys. Rev. B 104, 045112 (2021)
One of the major puzzles in condensed matter physics has been the observation of a Mott-insulating state away from half-filling. The filling-controlled Mott insulator-metal transition, induced via charge-carrier doping, has been extensively researche
Externí odkaz:
http://arxiv.org/abs/2103.08566
Autor:
Hameed, S., El-Khatib, S., Olson, K. P., Yu, B., Williams, T. J., Hong, T., Sheng, Q., Yamakawa, K., Zang, J., Uemura, Y. J., Zhao, G. Q., Jin, C. Q., Fu, L., Gu, Y., Ning, F., Cai, Y., Kojima, K. M., Freeland, J. W., Matsuda, M., Leighton, C., Greven, M.
Publikováno v:
Phys. Rev. B 104, 024410 (2021)
We explore the magnetically-ordered ground state of the isovalently-substituted Mott-insulator Y$_{1-x}$La$_{x}$TiO$_{3}$ for $x$ $\leq$ 0.3 via single crystal growth, magnetometry, neutron diffraction, x-ray magnetic circular dichroism (XMCD), muon
Externí odkaz:
http://arxiv.org/abs/2103.08565
Autor:
Pelc, D., Spieker, R. J., Anderson, Z. W., Krogstad, M. J., Biniskos, N., Bielinski, N. G., Yu, B., Sasagawa, T., Chauviere, L., Dosanjh, P., Liang, R., Bonn, D. A., Damascelli, A., Chi, S., Liu, Y., Osborn, R., Greven, M.
Publikováno v:
Sci. Rep. 12, 20483 (2022)
The interplay between structural and electronic degrees of freedom in complex materials is the subject of extensive debate in physics and materials science. Particularly interesting questions pertain to the nature and extent of pre-transitional short
Externí odkaz:
http://arxiv.org/abs/2103.05482
Autor:
de la Torre, A., Seyler, K. L., Zhao, L., Di Matteo, S., Scheurer, M. S., Li, Y., Yu, B., Greven, M., Sachdev, S., Norman, M. R., Hsieh, D.
Publikováno v:
Nature Physics 17, 777-781 (2021)
Understanding the complex phase diagram of cuprate superconductors is an outstanding challenge. The most actively studied questions surround the nature of the pseudogap and strange metal states and their relationship to superconductivity. In contrast
Externí odkaz:
http://arxiv.org/abs/2008.06516
Autor:
Sreedhar, S. A., Rossi, Antonio, Nayak, J., Anderson, Z., Tang, Y., Gregory, B., Hashimoto, M., Lu, D. -H., Rotenberg, E., Birgeneau, R. J., Greven, M., Yi, M., Vishik, I. M.
Publikováno v:
Phys. Rev. B 102, 205109 (2020)
The lamellar cuprate superconductors exhibit the highest ambient-pressure superconducting transition temperatures (T$_C$) and, after more than three decades of extraordinary research activity, continue to pose formidable scientific challenges. A majo
Externí odkaz:
http://arxiv.org/abs/2005.07233