Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Hellberg, C. Stephen"'
Autor:
Huang, Haiyue, Sarker, Mamun, Zahl, Percy, Hellberg, C. Stephen, Levy, Jeremy, Petrides, Ioannis, Sinitskii, Alexander, Narang, Prineha
Graphene nanoribbons (GNRs) are unique quasi-one-dimensional (1D) materials that have garnered a lot of research interest in the field of topological insulators. While the topological phases exhibited by GNRs are primarily governed by their chemical
Externí odkaz:
http://arxiv.org/abs/2406.13978
A Jastrow--Gutzwiller operator adds many-body correlations to a quantum state. However, the operator is non-unitary, making it difficult to implement directly on a quantum computer. We present a novel implementation of the Jastrow--Gutzwiller operato
Externí odkaz:
http://arxiv.org/abs/2305.19014
Publikováno v:
Phys. Rev. Research 6, 013238 (2024)
We present a cascaded variational quantum eigensolver algorithm that only requires the execution of a set of quantum circuits once rather than at every iteration during the parameter optimization process, thereby increasing the computational throughp
Externí odkaz:
http://arxiv.org/abs/2303.15237
Publikováno v:
Phys. Rev. A, 105, 022438, (2022)
We present a hybrid classical/quantum algorithm for efficiently solving the eigenvalue problem of many-particle Hamiltonians on quantum computers with limited resources by splitting the workload between classical and quantum processors. This algorith
Externí odkaz:
http://arxiv.org/abs/2112.05063
Autor:
McCreary, Kathleen M., Phillips, Madeleine, Chuang, Hsun-Jen, Wickramaratne, Darshana, Rosenberger, Matthew, Hellberg, C. Stephen, Jonker, Berend T.
Publikováno v:
Nanoscale, 2022, 14, 147
The twist angle between the monolayers in van der Waals heterostructures provides a new degree of freedom in tuning material properties. We compare the optical properties of WSe2 homobilayers with 2H and 3R stacking using photoluminescence, Raman spe
Externí odkaz:
http://arxiv.org/abs/2111.05704
SrTiO$_3$ is a superconducting semiconductor with a pairing mechanism that is not well understood. SrTiO$_3$ undergoes a ferroelastic transition at $T=$ 105 K, leading to the formation of domains with boundaries that can couple to electronic properti
Externí odkaz:
http://arxiv.org/abs/2002.11744
Autor:
Rosenberger, Matthew R., Chuang, Hsun-Jen, Phillips, Madeleine, Oleshko, Vladimir P., McCreary, Kathleen M., Sivaram, Saujan V., Hellberg, C. Stephen, Jonker, Berend T.
Van der Waals layered materials, such as transition metal dichalcogenides (TMDs), are an exciting class of materials with weak interlayer bonding which enables one to create van der Waals heterostructures (vdWH). Recent work has shown that control of
Externí odkaz:
http://arxiv.org/abs/1911.12282
Autor:
Hellberg, C. Stephen
Publikováno v:
Journal of Physics: Conf. Series 1252, 012006 (2019)
Density functional theory calculations of twin-domain walls in strontium titanate are presented. The two possible domain walls are characterized. The domain wall type is set by the relative phase of the octahedral rotations in the body-centered-tetra
Externí odkaz:
http://arxiv.org/abs/1909.07281
A major theoretical challenge of studying twisted transition metal dichalcogenide (TMD) bilayers is that the unit cell of such structures is very large and therefore difficult to address using first-principles methods. However, twisted TMD bilayers f
Externí odkaz:
http://arxiv.org/abs/1909.02495
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