Zobrazeno 1 - 10
of 155
pro vyhledávání: '"Subedi, Alaska"'
Autor:
Mukherjee, Anustup, Subedi, Alaska
We present a comprehensive first-principles analysis of the thermoelectric transport properties of hole-doped pyrite FeS$_2$ that includes electron-phonon interactions. This work was motivated by the observed variations in the magnitude of thermopowe
Externí odkaz:
http://arxiv.org/abs/2411.04771
Autor:
Subedi, Alaska
Publikováno v:
Comptes Rendus. Physique, Vol 22, Iss S2, Pp 161-184 (2021)
Nonlinear phononics is the phenomenon in which a coherent dynamics in a material along a set of phonons is launched after its infrared-active phonons are selectively excited using external light pulses. The microscopic mechanism underlying this pheno
Externí odkaz:
https://doaj.org/article/829a4bd9259f4f5ba4eb570c8216c739
Autor:
Kawabata, Takuya, Shimura, Kosuke, Ishii, Yuto, Koike, Minatsu, Yoshida, Kentaro, Yonehara, Shu, Yokoi, Kohei, Subedi, Alaska, Behnia, Kamran, Machida, Yo
When an ideal insulator is cooled, four regimes of thermal conductivity are expected to emerge one after another. Two of these, the Ziman and the Poiseuille, are hydrodynamic regimes in which collision among phonons are mostly Normal. It has been dif
Externí odkaz:
http://arxiv.org/abs/2407.16196
Autor:
Martelli, Valentina, Anquetil, Amaury, Atik, Lin Al, Jiménez, J. Larrea, Subedi, Alaska, Lobo, Ricardo P. S. M., Behnia, Kamran
The first-order phase transition between the liquid and gaseous phases ends at a critical point. Critical opalescence occurs at this singularity. Discovered in 1822, it is known to be driven by diverging fluctuations in the density. During the past t
Externí odkaz:
http://arxiv.org/abs/2404.05005
Autor:
Mukherjee, Anustup, Subedi, Alaska
Pyrite FeS$_2$ has been investigated for a wide range of applications, including thermoelectrics due to previous observation of large thermopower at room-temperature. However, the values of thermopower reported in the literature is extremely sensitiv
Externí odkaz:
http://arxiv.org/abs/2311.06135
Autor:
Subedi, Alaska
The recent discovery of a charge density wave order at the wave vector $P$ $(\frac{1}{3},\frac{1}{3},\frac{1}{3})$ in the kagome metal ScV$_6$Sn$_6$ has created a mystery because subsequent theoretical and experimental studies show a dominant phonon
Externí odkaz:
http://arxiv.org/abs/2308.11553
Autor:
Raji, Aravind, Dong, Zhengang, Porée, Victor, Subedi, Alaska, Li, Xiaoyan, Mundet, Bernat, Varbaro, Lucia, Domínguez, Claribel, Hadjimichael, Marios, Feng, Bohan, Nicolaou, Alessandro, Rueff, Jean-Pascal, Li, Danfeng, Gloter, Alexandre
The metal-hydride-based topochemical reduction process has produced novel thermodynamically unstable phases across various transition metal oxide series with unusual crystal structures and non-trivial ground states. Here, by such an oxygen (de-) inte
Externí odkaz:
http://arxiv.org/abs/2308.02855
Autor:
Mukherjee, Anustup, Subedi, Alaska
There has been a longstanding debate whether the pyrite CoS$_2$ or its alloys with FeS$_2$ are half metallic. We argue using first principles calculations that there is a finite occupation of minority-spin states at the Fermi level throughout the ser
Externí odkaz:
http://arxiv.org/abs/2305.03551
Autor:
Pueyo, Adrián Gómez, Subedi, Alaska
KTaO${}_{3}$ presents a rich hyper-Raman spectrum originating from two-phonon processes at the Brillouin zone boundary, indicating the possibility of driving these phonon modes using intense midinfrared laser sources. We obtained the coupling of ligh
Externí odkaz:
http://arxiv.org/abs/2304.05363
Publikováno v:
Nature Communications, 2023, 14(1): 1027
The origin of phonon thermal Hall Effect (THE) observed in a variety of insulators is yet to be identified. Here, we report on the observation of a thermal Hall conductivity in a non-magnetic elemental insulator, with an amplitude exceeding what has
Externí odkaz:
http://arxiv.org/abs/2301.00603