Zobrazeno 1 - 10
of 1 789
pro vyhledávání: '"Graf, D."'
We investigate the endofullerene system Ne@C$_{70}$, by constructing a three-dimensional Potential Energy Surface (PES) describing the translational motion of the Ne atom. We compare a plethora of electronic structure methods including: MP2, SCS-MP2,
Externí odkaz:
http://arxiv.org/abs/2406.07343
Autor:
Weinberger, T. I., Wu, Z., Hickey, A. J., Graf, D. E., Li, G., Wang, P., Zhou, R., Cabala, A., Pu, J., Sechovsky, V., Valiska, M., Lonzarich, G. G., Grosche, F. M., Eaton, A. G.
The phase landscape of UTe$_2$ features a remarkable diversity of superconducting phases under applied pressure and magnetic field. Recent quantum oscillation studies at ambient pressure have revealed the quasi-2D Fermi surface of this material. Howe
Externí odkaz:
http://arxiv.org/abs/2403.03946
Autor:
Wu, Z., Weinberger, T. I., Hickey, A. J., Chichinadze, D. V., Shaffer, D., Cabala, A., Chen, H., Long, M., Brumm, T. J., Xie, W., Lin, Y., Skourski, Y., Zengwei, Z., Graf, D. E., Sechovsky, V., Lonzarich, G. G., Valiska, 1 M., Grosche, F. M., Eaton, A. G.
Quantum critical phase boundaries (QCPBs) -- where a continuous phase transition occurs at zero temperature -- have been found to nucleate novel electronic states in a number of strongly correlated materials. Emergent electronic phases, such as uncon
Externí odkaz:
http://arxiv.org/abs/2403.02535
Publikováno v:
J. Chem. Phys. 160, 104303 (2024)
We investigate the endofullerene system $^3$He@C$_{60}$ with a four-dimensional Potential Energy Surface (PES) to include the three He translational degrees of freedom and C$_{60}$ cage radius. We compare MP2, SCS-MP2, SOS-MP2, RPA@PBE and C(HF)-RPA
Externí odkaz:
http://arxiv.org/abs/2401.04625
Autor:
Coak, M. J., Curley, S. P. M., Hawkhead, Z., Tidey, J. P., Graf, D., Clark, S. J., Sengupta, P., Manson, Z. E., Lancaster, T., Goddard, P. A., Manson, J. L.
Publikováno v:
Phys. Rev. B 108, 224431 (2023)
We present the magnetic and structural properties of [Cu(pyrazine)$_{0.5}$(glycine)]ClO$_4$ under applied pressure. As previously reported, at ambient pressure this material consists of quasi-two-dimensional layers of weakly coupled antiferromagnetic
Externí odkaz:
http://arxiv.org/abs/2308.12671
Autor:
Weinberger, T. I., Wu, Z., Graf, D. E., Skourski, Y., Cabala, A., Pospisil, J., Prokleska, J., Haidamak, T., Bastien, G., Sechovsky, V., Lonzarich, G. G., Valiska, M., Grosche, F. M., Eaton, A. G.
Publikováno v:
Phys. Rev. Lett. 132, 266503 (2024)
UTe$_2$ is a spin-triplet superconductor candidate for which high quality samples with long mean free paths have recently become available, enabling quantum oscillation measurements to probe its Fermi surface and effective carrier masses. It has rece
Externí odkaz:
http://arxiv.org/abs/2307.00568
Autor:
Dhital, C., Pokharel, G., Wilson, B., Kendrick, I., Asmar, M. M., Graf, D., Guerrero-Sanchez, J., Hernandez, R. Gonzalez, Wilson, S. D.
The shape of the Fermi surface, the effective mass of carriers, and the topologically non-trivial nature of electronic bands of kagome magnet GdV6Sn6 are investigated using de Haas van Alphen (dHvA) oscillations measurements. Our temperature and angl
Externí odkaz:
http://arxiv.org/abs/2306.17282
Autor:
Wu, Z., Weinberger, T. I., Chen, J., Cabala, A., Chichinadze, D. V., Shaffer, D., Pospisil, J., Prokleska, J., Haidamak, T., Bastien, G., Sechovsky, V., Hickey, A. J., Mancera-Ugarte, M. J., Benjamin, S., Graf, D. E., Skourski, Y., Lonzarich, G. G., Valiska, M., Grosche, F. M., Eaton, A. G.
The spin-triplet superconductor UTe$_2$ exhibits a myriad of exotic physical phenomena, including the possession of three distinct superconducting phases at ambient pressure for magnetic field $\mu_0 H \leq$ 40~T aligned in certain orientations. Howe
Externí odkaz:
http://arxiv.org/abs/2305.19033
Autor:
Dhital, C., Dally, R. L., Ruvalcaba, R., Gonzalez-Hernandez, R., Guerrero-Sanchez, J., Cao, H. B., Zhang, Q., Tian, W., Wu, Y., Frontzek, M. D., Karna, S. K., Meads, A., Wilson, B., Chapai, R., Graf, D., Bacsa, J., Jin, R., DiTusa, J. F.
Publikováno v:
PRB 2023
The magnetic structure, magnetoresistance, and Hall effect of non-centrosymmetric magnetic semimetal NdAlGe are investigated revealing an unusual magnetic state and anomalous transport properties that are associated with the electronic structure of t
Externí odkaz:
http://arxiv.org/abs/2302.05596
Autor:
Chung, Yoon Jang, Graf, D., Engel, L. W., Rosales, K. A. Villegas, Madathil, P. T., Baldwin, K. W., West, K. W., Pfeiffer, L. N., Shayegan, M.
Publikováno v:
Phys. Rev. Lett. 128, 026802 (2022)
The ground state of two-dimensional electron systems (2DESs) at low Landau level filling factors ($\nu\lesssim1/6$) has long been a topic of interest and controversy in condensed matter. Following the recent breakthrough in the quality of ultra-high-
Externí odkaz:
http://arxiv.org/abs/2203.10715