Výsledky vyhledávání - "Chatterjee, Utpal"

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Coupled electronic and magnetic excitations in the cuprates and their role in the superconducting transition

Autor: Restrepo, Francisco, Chatterjee, Utpal, Gu, Genda, Xu, Hao, Morr, Dirk K., Campuzano, Juan Carlos

The formation of Cooper pairs, a bound state of two electrons of opposite spin and momenta by exchange of a phonon [1], is a defining feature of conventional superconductivity. In the cuprate high temperature superconductors, even though it has been

Externí odkaz: http://arxiv.org/abs/2204.06599

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Denoising and feature extraction in photoemission spectra with variational auto-encoder neural networks

Autor: Restrepo, Francisco, Zhao, Junjing, Chatterjee, Utpal

In recent years, distinct machine learning (ML) models have been separately used for feature extraction and noise reduction from energy-momentum dispersion intensity maps obtained from raw angle-resolved photoemission spectroscopy (ARPES) data. In th

Externí odkaz: http://arxiv.org/abs/2203.07537

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Metal-to-insulator transition in Pt-doped TiSe$_2$ driven by emergent network of narrow transport channels

Autor: Lee, Kyungmin, Choe, Jesse, Iaia, Davide, Li, Juqiang, Zhao, Junjing, Shi, Ming, Ma, Junzhang, Yao, Mengyu, Wang, Zhenyu, Huang, Chien-Lung, Ochi, Masayuki, Arita, Ryotaro, Chatterjee, Utpal, Morosan, Emilia, Madhavan, Vidya, Trivedi, Nandini

Publikováno v: npj Quantum Mater. 6, 8 (2021)

Metal-to-insulator transitions (MIT) can be driven by a number of different mechanisms, each resulting in a different type of insulator -- Change in chemical potential can induce a transition from a metal to a band insulator; strong correlations can

Externí odkaz: http://arxiv.org/abs/1912.08246

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Evidence of Class Transitions in GRS 1915+105 from IXAE Data

Autor: Chakrabarti, Sandip K., Nandi, A., Choudhury, Asit, Chatterjee, Utpal

Publikováno v: Astrophys.J. 607 (2004) 406

GRS 1915+105 shows at least twelve distinct classes of light curves. By analysing the data obtained from Indian X-ray Astronomy Experiment (IXAE) instrument aboard IRS-P3 satellite, we show that in at least two days, transitions between one class to

Externí odkaz: http://arxiv.org/abs/astro-ph/0501282

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