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pro vyhledávání: '"Goswami, Pallab"'
The observation of a Hall effect, a finite transverse voltage induced by a longitudinal current, usually requires the breaking of time-reversal symmetry, for example through the application of an external magnetic field or the presence of long range
Externí odkaz:
http://arxiv.org/abs/2411.09161
Publikováno v:
Appl. Phys. Lett. 26 February 2024; 124 (9): 093102
There has been intense recent interest in the two-dimensional electron gases (2DEGs) that form at the surfaces and interfaces of KTaO$_3$ (KTO), with the discovery of superconductivity at temperatures significantly higher than those of similar 2DEGs
Externí odkaz:
http://arxiv.org/abs/2403.06022
Autor:
Tyner, Alexander C., Goswami, Pallab
Recent years have seen multiple high-throughput studies reveal an immense number of topological materials through use of symmetry indicators. Despite this success, three-dimensional topological insulators (TI) admitting a band-gap larger than Bi$_{2}
Externí odkaz:
http://arxiv.org/abs/2304.05424
Three-dimensional, crystalline Hopf insulators are generic members of unitary Wigner-Dyson class, which can break all global discrete symmetries and point group symmetries. In the absence of first Chern number for any two-dimensional plane of Brillou
Externí odkaz:
http://arxiv.org/abs/2301.08244
Autor:
Tyner, Alexander C., Goswami, Pallab
Field theory arguments suggest the possibility of $\mathbb{Z}$-classification of quantum spin Hall effect with magnetic flux tubes, that cause separation of spin and charge degrees of freedom, and pumping of spin or Kramers pair. However, the \emph{p
Externí odkaz:
http://arxiv.org/abs/2209.13582
There has been intense recent interest in the two-dimensional electron gases (2DEGs) that form at the surfaces and interfaces of KTaO$_3$ (KTO), with the discovery of superconductivity at temperatures significantly higher than those of similar 2DEGs
Externí odkaz:
http://arxiv.org/abs/2209.10534
Autor:
Tyner, Alexander C., Goswami, Pallab
The non-trivial third homotopy class of three-dimensional topological insulators leads to quantized, magneto-electric coefficient or axion angle $\theta= n \pi$, with $n \in \mathbb{Z}$. In Part I, we developed tools for computing $n$ from a staggere
Externí odkaz:
http://arxiv.org/abs/2206.10636
Autor:
Goswami, Pallab
Publikováno v:
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Thesis (Ph. D.)--UCLA, 2008.
Vita. Description based on print version record. Includes bibliographical references.
Vita. Description based on print version record. Includes bibliographical references.
Externí odkaz:
http://proquest.umi.com/pqdweb?did=1680035131&sid=4&Fmt=2&clientId=1564&RQT=309&VName=PQD
Benalcazar-Bernevig-Hughes (BBH) models, defined on $D$-dimensional simple cubic lattice, are paradigmatic toy models for studying $D$-th order topology and corner-localized, mid-gap states. Under periodic boundary conditions, the Wilson loops of non
Externí odkaz:
http://arxiv.org/abs/2201.07205
Autor:
Sur, Shouvik, Goswami, Pallab
Exponentially localized surface states are the most distinctive property of a crystal with non-trivial band topology. Such surface states play a key role in characterizing topological insulators (TIs), both in theory and experiments. TIs resulting fr
Externí odkaz:
http://arxiv.org/abs/2110.15353