Microwave spectroscopy of thermally excited quasiparticles in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><

Hosseini, Ahmad; Harris, Richard E.; Kamal, Saeid; Dosanjh, P.; Preston, J. S.; Liang, Ruixing; Hardy, W. N.; Bonn, D. A.

doi:10.1103/physrevb.60.1349

Cited by 208 publications

(273 citation statements)

References 56 publications

Supporting

Mentioning

252

Contrasting

Unclassified

Order By: Relevance

“…This is of particular interest in CeCoIn 5 because normal-state transport measurements reveal strong inelastic scattering and non-Fermi-liquid behaviour 25,26 . In the cuprates, where similarly strong scattering is observed in the normal state 27 , electrodynamic measurements show a rapid collapse in quasiparticle scattering on cooling through T c [28][29][30] , indicating that the charge carriers couple to a spectrum of fluctuations of electronic origin, in contrast to the phonons of a conventional metal. Early measurements on CeCoIn 5 are suggestive of similar behaviour 2,17 .…”

mentioning

confidence: 81%

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

et al. 2013

View full text Add to dashboard Cite

CeCoIn 5 is a heavy fermion superconductor with strong similarities to the high-T c cuprates, including quasi-two-dimensionality, proximity to antiferromagnetism and probable d-wave pairing arising from a non-Fermi-liquid normal state. Experiments allowing detailed comparisons of their electronic properties are of particular interest, but in most cases are difficult to realize, due to their very different transition temperatures. Here we use low-temperature microwave spectroscopy to study the charge dynamics of the CeCoIn 5 superconducting state. The similarities to cuprates, in particular to ultra-clean YBa 2 Cu 3 O y , are striking: the frequency and temperature dependence of the quasiparticle conductivity are instantly recognizable, a consequence of rapid suppression of quasiparticle scattering below T c ; and penetration-depth data, when properly treated, reveal a clean, linear temperature dependence of the quasiparticle contribution to superfluid density. The measurements also expose key differences, including prominent multiband effects and a temperature-dependent renormalization of the quasiparticle mass.

show abstract

mentioning

confidence: 81%

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

et al. 2013

View full text Add to dashboard Cite

show abstract

“…It is instructive to compare the magnitude of τ e in Bi2212 and Y123. In the latter system, τ e of high-quality crystals is of the order of 7 ps [15] and is reported to approach 20 ps [26] in BaZrO 3 -grown crystals. For Bi2212, recent study on the complex conductivity by Corson et al showed the qp lifetime to approach ∼1 ps [27] at low temperatures, similar to the value calculated independently from our measurements.…”

mentioning

confidence: 94%

“…For Bi2212, recent study on the complex conductivity by Corson et al showed the qp lifetime to approach ∼1 ps [27] at low temperatures, similar to the value calculated independently from our measurements. Further, assuming the scattering rate to remain constant [26], one can estimate the size of κ e upward in temperature. The deduced value at 5K (∼4.8 mW/Kcm) can be compared via the Wiedemann-Franz law to the available data on charge conductivity which is limited to T >5K [13].…”

mentioning

confidence: 99%

Effect of controlled disorder on quasiparticle thermal transport inBi2Sr2CaCu
Nakamae
¹
,
Behnia
²
,
Balicas
³

et al. 2001
Phys. Rev. B
43
12
60
1
View full text Add to dashboard Cite

Low temperature thermal conductivity, κ, of optimally-doped Bi2212 was studied before and after the introduction of point defects by electron irradiation. The amplitude of the linear component of κ remains unchanged, confirming the universal nature of heat transport by zero-energy quasiparticles. The induced decrease in the absolute value of κ at finite temperatures allows us to resolve a nonuniversal term in κ due to conduction by finite-energy quasiparticles. The magnitude of this term provides an estimate of the quasiparticle lifetime at subkelvin temperatures.Fifteen years after their discovery, high-T c superconductors continue to attract significant attention and provoke intense debate [1]. One central issue is the extent of validity of the Fermi-liquid picture for describing the electronic excitations in these systems. The properties of the metallic state (even at optimal doping) appear to remain beyond such a picture. But, are there well-defined quasiparticles (qp) deep in the superconducting state as suggested by ARPES measurements [2]? And if yes, at which energy scale do they break down? To answer these questions, low-energy excitations in the superconducting state are under intense scrutiny [3,4].Low temperature thermal conductivity, κ, has proven to be an instructive probe of such excitations. A non-vanishing linear term in thermal conductivity of optimally-doped Y123 for T → 0 was the first solid evidence for a finite density states of nodal quasiparticles at zero energy [5]. Moreover, as expected for the case of a d-wave gap [6,7], the amplitude of this term was found to be universal; i.e. independent of impurity concentration [5]. Recently, Durst and Lee [3] showed that, regardless of Fermi-liquid corrections, this amplitude is intimately related to the fine structure of the superconducting gap in the vicinity of the nodes. Subsequently, Chiao et al. [4] found a quantitative agreement between this gap structure as deduced from thermal conductivity and the one directly observed by ARPES studies [8] in optimally-doped Bi2212. On the other hand, data on electronic specific heat [9][10][11] and penetration depth [12,13] are limited to T >2K and probe excitations within a higher energy interval where the density of states is a linear function of energy. The temperature dependence of electronic specific heat in Y123 is in agreement with theoretical expectations for the gap structure near the nodes [4,11].

show abstract

“…25 In the present case of a 1D semiconducting nanowire proximity coupled to bulk s-wave superconductors, such absorption experiments can be difficult, and another quantity is needed which nevertheless is still given by the real part of the ac conductivity suitably defined. Below we show that the ac Josephson impedance serves this purpose, and it can be easily measured across a 1D semiconducting nanowire contacted by s-wave superconducting leads which also produce the proximity effect (Fig.…”

Section: Bulk Measurement (Ac Response)mentioning

confidence: 99%

Probing a topological quantum critical point in semiconductor-superconductor heterostructures

Tewari

Scarola

et al. 2012

Phys. Rev. B

View full text Add to dashboard Cite

Quantum ground states on the nontrivial side of a topological quantum critical point (TQCP) have unique properties that make them attractive candidates for quantum information applications. A recent example is provided by s-wave superconductivity on a semiconductor platform, which is tuned through a TQCP to a topological superconducting (TS) state by an external Zeeman field. Despite many attractive features of TS states, TQCPs themselves do not break any symmetries, making it impossible to distinguish the TS state from a regular superconductor in conventional bulk measurements. Here we show that for the semiconductor TQCP this problem can be overcome by tracking suitable bulk transport properties across the topological quantum critical regime itself. The universal low-energy effective theory and the scaling form of the relevant susceptibilities also provide a useful theoretical framework in which to understand the topological transitions in semiconductor heterostructures. Based on our theory, specific bulk measurements are proposed here in order to characterize the novel TQCP in semiconductor heterostructures.

show abstract

Microwave spectroscopy of thermally excited quasiparticles inYBa2Cu3O<

Cited by 208 publications

References 56 publications

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

Effect of controlled disorder on quasiparticle thermal transport inBi2Sr2CaCu
Nakamae
¹
,
Behnia
²
,
Balicas
³

et al. 2001
Phys. Rev. B
43
12
60
1
View full text Add to dashboard Cite

Probing a topological quantum critical point in semiconductor-superconductor heterostructures

Contact Info

Product

Resources

About

Microwave spectroscopy of thermally excited quasiparticles inYBa2Cu3O<

Cited by 208 publications

References 56 publications

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

Nodal quasiparticle dynamics in the heavy fermion superconductor CeCoIn5 revealed by precision microwave spectroscopy

Effect of controlled disorder on quasiparticle thermal transport inBi2Sr2CaCuNakamae1, Behnia2, Balicas3 et al. 2001Phys. Rev. B4312601View full textAdd to dashboardCite

Probing a topological quantum critical point in semiconductor-superconductor heterostructures

Contact Info

Product

Resources

About

Effect of controlled disorder on quasiparticle thermal transport inBi2Sr2CaCu
Nakamae
¹
,
Behnia
²
,
Balicas
³

et al. 2001
Phys. Rev. B
43
12
60
1
View full text Add to dashboard Cite