Zobrazeno 1 - 10
of 824
pro vyhledávání: '"Schechter, M A"'
Publikováno v:
Phys. Rev. B 89, 104202 (2014)
Amorphous solids, and many disordered lattices, exhibit a remarkable qualitative and quantitative universality in their acoustic properties at temperature $\lesssim 3$K. This phenomenon is attributed to the existence of tunneling two level systems (T
Externí odkaz:
http://arxiv.org/abs/1311.2313
Publikováno v:
Eur. Phys. J. Spec. Top. (2023), 10.1140/epjs/s11734-023-00982-7
Many disordered lattices exhibit remarkable universality in their low temperature properties, similar to that found in amorphous solids. Recently a two-TLS (two-level system) model was derived based on the microscopic characteristics of disordered la
Externí odkaz:
http://arxiv.org/abs/1307.0868
Autor:
Nalbach, P., Schechter, M.
Publikováno v:
New J. Phys. 19, 063030 (2017)
Tunneling two-level systems are ubiquitous in amorphous solids, and form a major source of noise in systems such as nano-mechanical oscillators, single electron transistors, and superconducting qubits. Occurance of defect tunneling despite their coup
Externí odkaz:
http://arxiv.org/abs/1306.5073
Publikováno v:
J. Phys.: Condens. Matter 26, 325401 (2014)
Amorphous solids, as well as many disordered lattices, display remarkable universality in their low temperature acoustic properties. This universality is attributed to the attenuation of phonons by tunneling two-level systems (TLSs), facilitated by t
Externí odkaz:
http://arxiv.org/abs/1303.2955
Autor:
Schechter, M., Stamp, P. C. E.
Publikováno v:
Phys. Rev. B 88, 174202 (2013)
The low temperature universal properties in disordered and amorphous solids are considered. We introduce a model that includes two types of two level systems (TLSs), which, based on their local symmetry, interact weakly or strongly with the phonon fi
Externí odkaz:
http://arxiv.org/abs/0910.1283
Autor:
Schechter, M., Stamp, P. C. E.
Publikováno v:
EPL, 88 (2009) 66002
Both orientational glasses and dipolar glasses possess an intrinsic random field, coming from the volume difference between impurity and host ions. We show this suppresses the glass transition, causing instead a crossover to the low $T$ phase. Moreov
Externí odkaz:
http://arxiv.org/abs/0910.0893
Autor:
Mikiashvili, L, Kempker, R R, Chakhaia, T S, Bablishvili, N, Avaliani, Z, Lomtadze, N, Schechter, M C, Kipiani, M
Publikováno v:
Clinical Infectious Diseases; 4/15/2024, Vol. 78 Issue 4, p1043-1052, 10p
Akademický článek
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Autor:
Schechter, M., Stamp, P. C. E.
Publikováno v:
J. Phys.: Condens. Matter 20, 244136 (2008)
The form of the low-temperature interactions between defects in neutral glasses is reconsidered. We analyse the case where the defects can be modelled either as simple 2-level tunneling systems, or tunneling rotational impurities. The coupling to str
Externí odkaz:
http://arxiv.org/abs/0801.4944
Autor:
Schechter, M., Stamp, P. C. E.
Publikováno v:
Phys. Rev. B 78, 054438 (2008)
The ${\rm LiHo_xY_{1-x}F_4}$ compound is widely considered to be the archetypal dipolar Quantum Ising system, with longitudinal dipolar interactions $V_{ij}^{zz}$ between ${\rm Ho}$ spins $\{i,j \}$ competing with transverse field-induced tunneling,
Externí odkaz:
http://arxiv.org/abs/0801.2889