Tomohiro Yokoyama

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We propose a multi-terminal spin filter using a quantum dot with spin-orbit interaction. First, we formulate the spin Hall effect (SHE) in a quantum dot connected to three leads. We show that the SHE is significantly enhanced by the resonant tunneling if the level spacing in the quantum dot is smaller than the level broadening. We stress that the SHE is(More)
Expressed emotion (EE) has been shown in various countries to be a good predictor of the clinical course of a patient's mental illness. Because the traditional EE interview requires considerable time and effort, this study examined the reliability of a method called the five-minute speech sample (FMSS) for assessing EE. The samples of 65 subjects were rated(More)
We investigated the relationship between 9-month relapse of 40 outpatients with schizophrenia and expressed emotion (EE) evaluated by the Five-Minute Speech Sample (FMSS). The results of this study suggest that the FMSS is suitable for use as a convenient instrument to measure EE, although it shows more false-positive results. Therefore borderline EE of the(More)
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