Probing phase coherence in solid helium using torsional oscillators of different path lengths

Duk Y. Kim, Joshua T. West, Tyler A. Engstrom, Norbert Mulders, Moses Hung-Wai Chan

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Long-range phase coherence is a critical signature of macroscopic quantum phenomena. To date, nonclassical rotational inertia (NCRI) of solid helium has been reported only in samples with physical dimension of at most 5 cm. We have investigated solid helium in longer path-length torsional oscillators. Samples of length ranging from 6 to 100 cm were grown inside toroids and in self-connected long capillaries. NCRI of 4×10 -5 and 3×10 -5 were found in cells with path length of 6 and 9 cm. In cells with path length of 30 and 100 cm, NCRI, if it exists, is less than 7×10 -5 and 4×10 -5, respectively.

Original languageEnglish (US)
Article number024533
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number2
DOIs
StatePublished - Jan 24 2012

Fingerprint

Helium
phase coherence
inertia
helium
oscillators
toroids
cells
signatures

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kim, Duk Y. ; West, Joshua T. ; Engstrom, Tyler A. ; Mulders, Norbert ; Chan, Moses Hung-Wai. / Probing phase coherence in solid helium using torsional oscillators of different path lengths. In: Physical Review B - Condensed Matter and Materials Physics. 2012 ; Vol. 85, No. 2.
@article{58a2c8f886354983a989f0cddc81a853,
title = "Probing phase coherence in solid helium using torsional oscillators of different path lengths",
abstract = "Long-range phase coherence is a critical signature of macroscopic quantum phenomena. To date, nonclassical rotational inertia (NCRI) of solid helium has been reported only in samples with physical dimension of at most 5 cm. We have investigated solid helium in longer path-length torsional oscillators. Samples of length ranging from 6 to 100 cm were grown inside toroids and in self-connected long capillaries. NCRI of 4×10 -5 and 3×10 -5 were found in cells with path length of 6 and 9 cm. In cells with path length of 30 and 100 cm, NCRI, if it exists, is less than 7×10 -5 and 4×10 -5, respectively.",
author = "Kim, {Duk Y.} and West, {Joshua T.} and Engstrom, {Tyler A.} and Norbert Mulders and Chan, {Moses Hung-Wai}",
year = "2012",
month = "1",
day = "24",
doi = "10.1103/PhysRevB.85.024533",
language = "English (US)",
volume = "85",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "2",

}

Probing phase coherence in solid helium using torsional oscillators of different path lengths. / Kim, Duk Y.; West, Joshua T.; Engstrom, Tyler A.; Mulders, Norbert; Chan, Moses Hung-Wai.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 85, No. 2, 024533, 24.01.2012.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Probing phase coherence in solid helium using torsional oscillators of different path lengths

AU - Kim, Duk Y.

AU - West, Joshua T.

AU - Engstrom, Tyler A.

AU - Mulders, Norbert

AU - Chan, Moses Hung-Wai

PY - 2012/1/24

Y1 - 2012/1/24

N2 - Long-range phase coherence is a critical signature of macroscopic quantum phenomena. To date, nonclassical rotational inertia (NCRI) of solid helium has been reported only in samples with physical dimension of at most 5 cm. We have investigated solid helium in longer path-length torsional oscillators. Samples of length ranging from 6 to 100 cm were grown inside toroids and in self-connected long capillaries. NCRI of 4×10 -5 and 3×10 -5 were found in cells with path length of 6 and 9 cm. In cells with path length of 30 and 100 cm, NCRI, if it exists, is less than 7×10 -5 and 4×10 -5, respectively.

AB - Long-range phase coherence is a critical signature of macroscopic quantum phenomena. To date, nonclassical rotational inertia (NCRI) of solid helium has been reported only in samples with physical dimension of at most 5 cm. We have investigated solid helium in longer path-length torsional oscillators. Samples of length ranging from 6 to 100 cm were grown inside toroids and in self-connected long capillaries. NCRI of 4×10 -5 and 3×10 -5 were found in cells with path length of 6 and 9 cm. In cells with path length of 30 and 100 cm, NCRI, if it exists, is less than 7×10 -5 and 4×10 -5, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84863012082&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84863012082&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.024533

DO - 10.1103/PhysRevB.85.024533

M3 - Article

AN - SCOPUS:84863012082

VL - 85

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 2

M1 - 024533

ER -