Ultrasonic study of URu2Si2At very low temperatures

A. Suslov; M. Williamsen; J. B. Ketterson; D. G. Hinks; Bimal K. Sarma

doi:10.1063/1.2355121

Ultrasonic study of URu₂Si₂At very low temperatures

A. Suslov^*, M. Williamsen, J. B. Ketterson, D. G. Hinks, Bimal K. Sarma

^*Corresponding author for this work

Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The velocity of longitudinal ultrasound propagated along the a axis in URu₂Si₂ has been studied at temperatures down to 40 mK and in magnetic fields of up to 45 T applied along the c axis. The frequencies of the observed acoustic quantum oscillations (560 T and 1070 T), as well as calculated effective masses (14.5m_e and 22m_e), are in reasonable agreement with the known dHvA extremal cross sections of the Fermi surface in URu₂Si₂. It is shown that features observed previously at temperatures of about 0.5 K in magnetic fields between about 29 and 30 T in the magnetoresistance. Hall coefficient and ultrasound velocity are associated with quantum oscillations, which are clearly seen at lower temperatures. A hysteresis observed at 40 mK for all three steps of the metamagnetic transition confirms that they all are first order transitions.

Original language	English (US)
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	1173-1174
Number of pages	2
DOIs	https://doi.org/10.1063/1.2355121
State	Published - 2006
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: Aug 10 2006 → Oct 17 2006

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	8/10/06 → 10/17/06

Keywords

Heavy-fermions
Metamagnetism
Ultrasound

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2355121

Cite this

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title = "Ultrasonic study of URu2Si2At very low temperatures",

abstract = "The velocity of longitudinal ultrasound propagated along the a axis in URu2Si2 has been studied at temperatures down to 40 mK and in magnetic fields of up to 45 T applied along the c axis. The frequencies of the observed acoustic quantum oscillations (560 T and 1070 T), as well as calculated effective masses (14.5me and 22me), are in reasonable agreement with the known dHvA extremal cross sections of the Fermi surface in URu2Si2. It is shown that features observed previously at temperatures of about 0.5 K in magnetic fields between about 29 and 30 T in the magnetoresistance. Hall coefficient and ultrasound velocity are associated with quantum oscillations, which are clearly seen at lower temperatures. A hysteresis observed at 40 mK for all three steps of the metamagnetic transition confirms that they all are first order transitions.",

keywords = "Heavy-fermions, Metamagnetism, Ultrasound",

author = "A. Suslov and M. Williamsen and Ketterson, {J. B.} and Hinks, {D. G.} and Sarma, {Bimal K.}",

year = "2006",

doi = "10.1063/1.2355121",

language = "English (US)",

isbn = "0735403473",

series = "AIP Conference Proceedings",

pages = "1173--1174",

booktitle = "LOW TEMPERATURE PHYSICS",

note = "LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 ; Conference date: 10-08-2006 Through 17-10-2006",

}

Suslov, A, Williamsen, M, Ketterson, JB, Hinks, DG & Sarma, BK 2006, Ultrasonic study of URu₂Si₂At very low temperatures. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 1173-1174, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 8/10/06. https://doi.org/10.1063/1.2355121

TY - GEN

T1 - Ultrasonic study of URu2Si2At very low temperatures

AU - Suslov, A.

AU - Williamsen, M.

AU - Ketterson, J. B.

AU - Hinks, D. G.

AU - Sarma, Bimal K.

PY - 2006

Y1 - 2006

N2 - The velocity of longitudinal ultrasound propagated along the a axis in URu2Si2 has been studied at temperatures down to 40 mK and in magnetic fields of up to 45 T applied along the c axis. The frequencies of the observed acoustic quantum oscillations (560 T and 1070 T), as well as calculated effective masses (14.5me and 22me), are in reasonable agreement with the known dHvA extremal cross sections of the Fermi surface in URu2Si2. It is shown that features observed previously at temperatures of about 0.5 K in magnetic fields between about 29 and 30 T in the magnetoresistance. Hall coefficient and ultrasound velocity are associated with quantum oscillations, which are clearly seen at lower temperatures. A hysteresis observed at 40 mK for all three steps of the metamagnetic transition confirms that they all are first order transitions.

AB - The velocity of longitudinal ultrasound propagated along the a axis in URu2Si2 has been studied at temperatures down to 40 mK and in magnetic fields of up to 45 T applied along the c axis. The frequencies of the observed acoustic quantum oscillations (560 T and 1070 T), as well as calculated effective masses (14.5me and 22me), are in reasonable agreement with the known dHvA extremal cross sections of the Fermi surface in URu2Si2. It is shown that features observed previously at temperatures of about 0.5 K in magnetic fields between about 29 and 30 T in the magnetoresistance. Hall coefficient and ultrasound velocity are associated with quantum oscillations, which are clearly seen at lower temperatures. A hysteresis observed at 40 mK for all three steps of the metamagnetic transition confirms that they all are first order transitions.

KW - Heavy-fermions

KW - Metamagnetism

KW - Ultrasound

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