Negative magnetoresistance in indium antimonide whiskers doped with tin

Druzhinin, A. A.; Ostrovskii, Igor; Khoverko, Yuriy; Liakh-Kaguy, Natalia

doi:10.1063/1.4954778

Cited by 24 publications

(12 citation statements)

References 23 publications

(55 reference statements)

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“…Our previous investigation have indicated in a possibility of coexisting Kondo effect and partial superconductivity in GaSb whiskers heavily doped to concentrations corresponding to MIT [8]. Magnetotransport properties of various heavily doped semiconductor whiskers such as Ge, InSb, GaSb at low temperatures [9][10][11][12] allowed us to establish SdH oscillations, week antilocalization as well as strong spin-orbital interaction. The current study concerns to investigation of Bi2Se3 whisker magnetoresistance in low temperature range (1.5-77 K) and high magnetic field up to 10 T. Low temperature superconductivity with critical temperature Tc near 5.3 K as well as anomalous magnetoresistance upturn is revealed in the whiskers and likely connected with 2D states of the whisker surface.…”

Section: Introductionmentioning

confidence: 89%

Superconductivity and Kondo Effect of PdxBi2Se3 Whiskers at Low Temperatures

Druzhini¹,

Liakh-Kaguy²,

Ostrovskii³

et al. 2017

J. Nano- Electron. Phys.

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Temperature dependencies of Bi2Se3 whiskers' resistance with Pd doping concentration of (1-2)  10 19 cm − 3 where measured in temperature range 1.5-77 K. At temperature 5.3 K a sharp drop in the whisker resistance was found. The effect observed is likely resulted from the whiskers partial transition in superconducting state at temperature 5.3 K, which is likely connected with -PdBi2 inclusions in the whiskers. Transverse magnetoresistance in n-type Bi2Se3 whiskers with different doping concentration in the vicinity to the metal-insulator transition from metal side of the transition was studied in magnetic field 0-10 T. The magnetic field suppression of superconductivity allows to determine the main parameters: upper critical magnetic field Bc2  1.5 T, superconductor coherence length (0)  15 nm, superconductive gap   0.8 meV. Besides on the temperature dependence of the whisker resistance and magnetoresistance a minimum was observed in the temperature range 20-25 K that is connected with appearance of Kondo effect.

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Section: Introductionmentioning

confidence: 89%

Superconductivity and Kondo Effect of PdxBi2Se3 Whiskers at Low Temperatures

Druzhini¹,

Liakh-Kaguy²,

Ostrovskii³

et al. 2017

J. Nano- Electron. Phys.

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“…Let us discuss the next phenomenon observed in InSb whiskers at low temperatures. The whisker magnetoresistance was shown to oscillate according to arising Shubnikov-de-Haase oscillations in magnetic fields 05017-4 [17][18][19]. One can suppose that thermo-emf oscillations could arise when the whiskers were loaded in magnetic field.…”

Section: An Analysis Of the Thermoelectric Parameters Of The Insb Whimentioning

confidence: 99%

Thermoelectric Properties of InSb Whiskers

Druzhinin¹,

Ostrovskii²,

Khoverko³

et al. 2020

J. Nano- Electron. Phys.

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The article deals with studies of thermoelectric parameters of InSb whiskers with tin concentration of about 4.4•10 18 cm-3 in the temperature range 4.2-300 K. The resistance and Seebeck coefficient were measured experimentally. The InSb whiskers have shown rather high values of Seebeck coefficient exceeding the values of bulk materials by 2-3 times. Using a special method of heat transfer in the whisker joints, the thermal conductivity of the whisker was simulated. The obtained threshold on the temperature dependence of thermal conductivity for InSb whiskers and nanowires in the range of about 100 K connecting with phonon capture of charge carriers indicates high reliability of the data obtained. As a result, ZT parameter of InSb whiskers versus temperature in the temperature range 4.2-300 K was calculated. The obtained value of ZT parameter 0.15 at room temperature indicates a possibility of the whisker use for thermal converters design.

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“…The temperature dependences of mobility for GaSb microcrystals was taken from our previous studies [26]. From the weak localization theory is known the sign of conductivity correction depends on the relation between phase relaxation time of the electron wave ϕ τ and spin relaxation time owing to spin-orbit interaction so τ [27]. Temperature dependence of the resistance was determined by localization carriers and the spin relaxation was slight at condition so ϕ τ >> τ .…”

Section: Crossover From Weak Localization To Antilocalization In Gasbmentioning

confidence: 99%

Low-temperature magnetoresistance of GaSb whiskers

Druzhinin

Ostrovskii

Khoverko

et al. 2017

Low Temperature Physics

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Transverse and longitudinal magnetoresistancies in n-type GaSb whiskers with different doping concentration (Te) in the vicinity to the metal-insulator transition (MIT) from metal side of the transition were studied in the temperature range 1.5-60 K and magnetic field 0-14 T. Shubnikov-de Haas oscillations in GaSb whiskers at low temperatures were revealed in magnetic field range 2-12 T. The oscillation period 0.025T -1 was found at various doping concentration in GaSb whiskers. The effective mass of electrons m с = 0.041m 0 and Dingle temperature of about 7.5 K were found in GaSb whiskers with impurity concentration in the vicinity to MIT. The presence of negative magnetoresistance in GaSb whiskers with the impurity concentration in the nearest approximation to MIT with resistivity ρ 300K = 0.0053 Ω·сm was observed and associated with weak localization. Besides for the whiskers a resistance minimum was observed at temperature about 16 K that is connected with Kondo effect. Magnetoresistance studies of n-type conductivity for GaSb whiskers revealed the crossover from weak localization to antilocalization in the temperature range of 1.4-4.2 K and magnetic fields below 1 T.

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Negative magnetoresistance in indium antimonide whiskers doped with tin

Cited by 24 publications

References 23 publications

Superconductivity and Kondo Effect of PdxBi2Se3 Whiskers at Low Temperatures

Superconductivity and Kondo Effect of PdxBi2Se3 Whiskers at Low Temperatures

Thermoelectric Properties of InSb Whiskers

Low-temperature magnetoresistance of GaSb whiskers

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