Zobrazeno 1 - 10
of 572
pro vyhledávání: '"Singer, Philip"'
Autor:
Santos, Thiago J. Pinheiro dos, Orcan-Ekmekci, Betul, Chapman, Walter G., Singer, Philip M., Asthagiri, Dilipkumar N.
Traditional theories of the NMR autocorrelation function for intramolecular dipole pairs assume single-exponential decay, yet the calculated autocorrelation of realistic systems display a rich, multi-exponential behavior resulting in anomalous NMR re
Externí odkaz:
http://arxiv.org/abs/2310.06106
Autor:
Parambathu, Arjun Valiya, Chapman, Walter G., Hirasaki, George J., Asthagiri, Dilip, Singer, Philip M.
Kerogen-rich shale reservoirs will play a key role during the energy transition, yet the effects of nano-confinement on the NMR relaxation of hydrocarbons in kerogen are poorly understood. We use atomistic MD simulations to investigate the effects of
Externí odkaz:
http://arxiv.org/abs/2212.02489
Autor:
Yuan, Weishi, Wang, Jiaming, Singer, Philip M., Smaha, Rebecca W., Wen, Jiajia, Lee, Young S., Imai, Takashi
Publikováno v:
npj Quantum Materials 7, 120 (2022)
Kagome lattice Heisenberg antiferromagnets are known to be highly sensitive to perturbations caused by structural disorder. NMR is a local probe ideally suited for investigating such disorder-induced effects, but in practice large distributions in th
Externí odkaz:
http://arxiv.org/abs/2209.15518
Autor:
Takahashi, Sean K., Wang, Jiaming, Arsenault, Alexandre, Abramchuk, Mykola, Tafti, Fazel, Singer, Philip M., Imai, Takashi
Publikováno v:
Phys. Rev. X 9, 031047 (2019)
Magnetic moments arranged at the corners of a honeycomb lattice are predicted to form a novel state of matter, Kitaev quantum spin liquid, under the influence of frustration effects between bond-dependent Ising interactions. Some layered honeycomb ir
Externí odkaz:
http://arxiv.org/abs/2203.04261
Autor:
Wang, Jiaming, Yuan, Weishi, Singer, Philip M., Smaha, Rebecca W., He, Wei, Wen, Jiajia, Lee, Young S., Imai, Takashi
Publikováno v:
Nature Physics 17, 1109-1113 (2021)
The kagome Heisenberg antiferromagnet formed by frustrated spins arranged in a lattice of corner-sharing triangles is a prime candidate for hosting a quantum spin liquid (QSL) ground state consisting of entangled spin singlets. But the existence of v
Externí odkaz:
http://arxiv.org/abs/2203.04168
Autor:
Wang, Jiaming, Yuan, Weishi, Singer, Philip M., Smaha, Rebecca W., He, Wei, Wen, Jiajia, Lee, Young S., Imai, Takashi
We use $^{79}$Br nuclear quadrupole resonance (NQR) to demonstrate that ultra slow lattice dynamics set in below the temperature scale set by the Cu-Cu super-exchange interaction $J$~($\simeq160$~K) in the kagome lattice Heisenberg antiferromagnet Zn
Externí odkaz:
http://arxiv.org/abs/2112.15582
Autor:
Pinheiro dos Santos, Thiago J., Orcan-Ekmekci, Betul, Chapman, Walter G., Singer, Philip M., Asthagiri, Dilipkumar N.
Publikováno v:
Journal of Chemical Physics; 2/14/2024, Vol. 160 Issue 6, p1-16, 16p
Autor:
Singer, Philip M., Parambathu, Arjun Valiya, Santos, Thiago J. Pinheiro dos, Liu, Yunke, Alemany, Lawrence B., Hirasaki, George J., Chapman, Walter G., Asthagiri, Dilip
Atomistic molecular dynamics simulations are used to investigate $^1$H NMR $T_1$ relaxation of water from paramagnetic Gd$^{3+}$ ions in solution at 25$^{\circ}$C. Simulations of the $T_1$ relaxivity dispersion function $r_1$ computed from the Gd$^{3
Externí odkaz:
http://arxiv.org/abs/2102.10763
Autor:
Wang, Jiaming, Yuan, Weishi, Imai, Takashi, Singer, Philip M., Bahrami, Faranak, Tafti, Fazel
Publikováno v:
Phys. Rev. B 103, 214405 (2021)
We investigate the structural and magnetic properties of a Kitaev spin liquid candidate material Ag$_3$LiIr$_2$O$_6$ based on $^7$Li nuclear magnetic resonance line shape, Knight shift and spin-lattice relaxation rate $1/T_1$. The first sample A show
Externí odkaz:
http://arxiv.org/abs/2012.12340