Zobrazeno 1 - 10
of 737
pro vyhledávání: '"Halperin, W."'
Landau predicted that transverse sound propagates in a Fermi liquid with sufficiently strong Fermi liquid interactions, unlike a classical fluid which cannot support shear oscillations. Previous attempts to observe this unique collective mode yielded
Externí odkaz:
http://arxiv.org/abs/2410.10795
Anisotropic aerogel possesses structure which exhibits a strong influence over the composition and orientation of the order parameter of imbibed superfluid $^3$He. Computational studies have identified stretched aerogel with plane-like structures and
Externí odkaz:
http://arxiv.org/abs/2311.00909
Publikováno v:
Phys. Rev. Lett. 131, (2023) 046001
Nuclear magnetic resonance measurements of the magnetic susceptibility of superfluid $^3$He imbibed in anisotropic aerogel reveal anomalous behavior at low temperatures. Although the frequency shift clearly identifies a low-temperature phase as the $
Externí odkaz:
http://arxiv.org/abs/2302.01258
Autor:
Nguyen, M. D., Simon, J. S., Scott, J. W., Tsai, Y. C. Cincia, Zimmerman, A. M., Halperin, W. P.
Publikováno v:
Nature Communications, 2024
We perform cluster aggregation simulations to model the structure of anisotropic aerogel. By biasing the diffusion process, we are able to obtain two distinct types of globally anisotropic aerogel structures which we call "nematic", with long strands
Externí odkaz:
http://arxiv.org/abs/2301.11261
Autor:
Gao, Christina, Halperin, W. P., Kahn, Yonatan, Nguyen, Man, Schütte-Engel, Jan, Scott, J. W.
Axions and axion-like particles may couple to nuclear spins like a weak oscillating effective magnetic field, the "axion wind." Existing proposals for detecting the axion wind sourced by dark matter exploit analogies to nuclear magnetic resonance (NM
Externí odkaz:
http://arxiv.org/abs/2208.14454
Autor:
Avers, K. E., Gannon, W. J., Leishman, A. W. D., DeBeer-Schmitt, L., Halperin, W. P., Eskildsen, M. R.
Publikováno v:
Front. Electron. Mater. 2, 878308 (2022)
We have used small-angle neutron scattering to determine the vortex lattice phase diagram in the topological superconductor UPt3 for the applied magnetic field along the crystalline c-axis. A triangular vortex lattice is observed throughout the super
Externí odkaz:
http://arxiv.org/abs/2202.08878
The discovery of superfluidity in 3He in 1971, published in 1972, [1, 2] has influenced a wide range of investigations that extend well beyond fermionic superfluids, including electronic quantum ma- terials, ultra-cold gases and degenerate neutron ma
Externí odkaz:
http://arxiv.org/abs/2108.04098
Autor:
Avers, K. E., Kuhn, S. J., Leishman, A. W. D., Gannon, W. J., DeBeer-Schmitt, L., Dewhurst, C. D., Honecker, D., Cubitt, R., Halperin, W. P., Eskildsen, M. R.
Publikováno v:
Phys. Rev. B 105, 184512 (2022)
When studied by small-angle neutron scattering the vortex lattice (VL) in UPt3 undergoes a gradual disordering as a function of time due to 235U fission. This temporarily heats regions of the sample above the critical temperature, where, upon re-cool
Externí odkaz:
http://arxiv.org/abs/2103.09843
Autor:
Avers, K. E., Nguyen, M. D., Scott, J. W., Zimmerman, A. M., Thomas, S. M., Rosa, P. F. S., Bauer, E. D., Thompson, J. D., Halperin, W. P.
Publikováno v:
Phys. Rev. Materials 5, 054803 (2021)
The interplay between unconventional superconductivity and quantum critical ferromagnetism in the U-Ge compounds represents an open problem in strongly correlated electron systems. Sample quality can have a strong influence on both of these ordered s
Externí odkaz:
http://arxiv.org/abs/2103.08000
Autor:
Avers, K. E., Maksimov, P. A., Rosa, P. F. S., Thomas, S. M., Thompson, J. D., Halperin, W. P., Movshovich, R., Chernyshev, A. L.
Publikováno v:
Phys. Rev. B 103, 180406 (2021)
CeCd$_3$As$_3$ is a rare-earth triangular-lattice antiferromagnet with large inter-layer separation. Our field-dependent heat capacity measurements at dilution fridge temperatures allow us to trace the field-evolution of the spin-excitation gaps thro
Externí odkaz:
http://arxiv.org/abs/2102.02818